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diff --git a/news.rst b/news.rst new file mode 100644 index 000000000..f88b480d0 --- /dev/null +++ b/news.rst @@ -0,0 +1,4165 @@ +Release Notes +======================================== + +Version 1.11.34, Not Yet Released +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fix TLS session resumption bugs which caused resumption failures if an + application used a single session cache for both TLS and DTLS. (GH #688) + +* Add MessageAuthenticationCode::start_msg interface, for MACs which require or + can use a nonce (GH #691) + +* Add GMAC, a MAC based on GCM which requires a nonce (GH #488 / #691) + +* HMAC_DRBG allows configuring maximum number of bytes before a forced reseed + (GH #690) + +* The deprecated RNGs HMAC_RNG and X9.31 RNG have been removed. Now the only + userspace PRNG included in the library is HMAC_DRBG. (GH #692) + +* The entropy sources for EGD and BeOS, as well as the Unix entropy source which + executed processes to get statistical data have been removed. (GH #692) + +* The openpgp module (which just implemented OpenPGP compatible base64 encoding + and decoding, nothing else) has been removed. + +* Add more tests for Pipe/Filter (GH #689 #693) + + +Version 1.11.33, 2016-10-26 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Avoid side channel during OAEP decryption. (CVE-2016-8871) + +* A countermeasure for the Lucky13 timing attack against CBC-based TLS + ciphersuites has been added. (GH #675) + +* Added X25519-based key exchange for TLS (GH #673) + +* Add Certificate_Store_In_SQL which supports storing certs, keys, and + revocation information in a SQL database. Subclass Certificate_Store_In_SQLite + specializes with support for SQLite3 databases. (GH #631) + +* The Certificate_Store interface has been changed to deal with + ``std::shared_ptrs`` instead of raw pointers (GH #471 #631) + +* Add support for official SHA-3. Keccak-1600 was already supported + but used different padding from FIPS 202. (GH #669) + +* Add SHAKE-128 based stream cipher. (GH #669) + +* NewHope key exchange now supports the SHA-256/AES-128-CTR scheme + used by BoringSSL in addition to the SHA-3/SHAKE-128 parameters used + by the reference implementation. (GH #669) + +* Add support for the TLS Supported Point Formats Extension from RFC 4492. Adds + ``TLS::Policy::use_ecc_point_compression`` policy option. If supported on both + sides, ECC points can be sent in compressed format which saves a few bytes + during the handshake. (GH #645) + +* Fix entropy source selection bug on Windows, which caused the CryptoAPI + entropy source to be not available under its normal name "win32_cryptoapi" but + instead "dev_random". GH #644 + +* Accept read-only access to ``/dev/urandom``. System_RNG previously required + read-write access, to allow applications to provide inputs to the system + PRNG. But local security policies might only allow read-only access, as is the + case with Ubuntu's AppArmor profile for applications in the Snappy binary + format. If opening read/write fails, System_RNG silently backs down to + read-only, in which case calls to ``add_entropy`` on that object will fail. + (GH #647 #648) + +* Fix use of Win32 CryptoAPI RNG as an entropy source, which was accidentally + disabled due to empty list of acceptable providers being specified. Typically + the library would fall back to gathering entropy from OS functions returning + statistical information, but if this functionality was disabled in the build a + ``PRNG_Unseeded`` exception would result. (GH #655) + +* Add support for building the library as part of the IncludeOS unikernel. + This included making filesystem and threading support optional. (GH #665) + +* Added ISA annotations so that with GCC (all supported versions) and + Clang (since 3.7) it is no longer required to compile amalgamation + files with ABI specific flags such as ``-maes``. (GH #665) + +* Internal cleanups to TLS CBC record handling. TLS CBC ciphersuites + can now be disabled by disabling ``tls_cbc`` module. (GH #642 #659) + +* Internal cleanups to the object lookup code eliminates most global locks and + all use of static initializers (GH #668 #465) + +* Avoid ``static_assert`` triggering under MSVC debug builds (GH #646) + +* The antique PBKDF1 password hashing scheme is deprecated and will be + removed in a future release. It was only used to support the equally + ancient PBES1 private key encryption scheme, which was removed in 1.11.8. + +* Added MSVC debug/checked iterator builds (GH #666 #667) + +* Added Linux ppc64le cross compile target to Travis CI (GH #654) + +* If RC4 is disabled, also disable it coming from the OpenSSL provider (GH #641) + +* Add TLS message parsing tests (GH #640) + +* Updated BSI policy to prohibit DES, HKDF, HMAC_RNG (GH #649) + +* Documentation improvements (GH #660 #662 #663 #670) + +Version 1.11.32, 2016-09-28 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add support for the NewHope Ring-LWE key encapsulation algorithm. This scheme + provides an estimated ~200 bit security level against a quantum attacker while + also being very fast and requiring only modest message sizes of 1824 and 2048 + bytes for initiator and responder, resp. This version is tested as having + bit-for-bit identical output as the reference implementation by the authors. + + Be warned that NewHope is still a very new scheme and may yet fall to analysis. + For best assurance, NewHope should be used only in combination with another + key exchange mechanism, such as ECDH. + +* New TLS callbacks API. Instead of numerous std::function callbacks, the + application passes an object implementing the TLS::Callbacks interface, which + has virtual functions matching the previous callbacks (plus some extras). + Full source compatability with previous versions is maintained for now, but + the old interface is deprecated and will be removed in a future release. The + manual has been updated to reflect the changes. (GH #457 and #567) + +* Add support for TLS Encrypt-then-MAC extension (GH #492 and #578), which fixes + the known issues in the TLS CBC-HMAC construction. + +* The format of the TLS session struct has changed (to support EtM), so old + TLS session caches will be invalidated. + +* How the library presents optimized algorithm implementations has changed. For + example with the algorithm AES-128, previously there were three BlockCipher + classes AES_128, AES_128_SSSE3, and AES_128_NI which used (resp) a table-based + implementation vulnerable to side channels, a constant time version using + SSSE3 SIMD extensions on modern x86, and x86 AES-NI instructions. Using the + correct version at runtime required using ``BlockCipher::create``. Now, only + the class AES_128 is presented, and the best available version is always used + based on CPUID checks. The tests have been extended to selectively disable + CPUID bits to ensure all available versions are tested. (GH #477 #623) + + Removes API classes AES_128_NI, AES_192_NI, AES_256_NI, AES_128_SSSE3, + AES_192_SSSE3 AES_256_SSSE3, IDEA_SSE2, Noekeon_SIMD, Serpent_SIMD, + Threefish_512_AVX2, SHA_160_SSE2 + +* The deprecated algorithms Rabin-Williams, Nyberg-Rueppel, MARS, RC2, RC5, RC6, + SAFER-SK, TEA, MD2, HAS-160, and RIPEMD-128 have been removed. (GH #580) + +* A new Cipher_Mode interface ``process`` allows encryption/decryption of + buffers without requiring copying into ``secure_vector`` first. (GH #516) + +* Fix verification of self-issued certificates (GH #634) + +* SSE2 optimizations for ChaCha, 60% faster on both Westmere and Skylake (GH #616) + +* The HMAC_RNG constructor added in 1.11.31 that took both an RNG and an + entropy source list ignored the entropy sources. + +* The configure option ``--via-amalgamation`` was renamed to ``--amalgamation``. + The configure option ``--gen-amalgamation`` was removed. It did generate + amalgamations but build Botan without amalgamation. Users should migrate to + ``--amalgamation``. (GH #621) + +* DH keys did not automatically self-test after being generated, contrary to + the current behavior for other key types. + +* Add tests for TLS 1.2 PRF (GH #628) + +Version 1.11.31, 2016-08-30 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fix undefined behavior in Curve25519 on platforms without a native 128-bit + integer type. This was known to produce incorrect results on 32-bit ARM + under Clang. GH #532 (CVE-2016-6878) + +* If X509_Certificate::allowed_usage was called with more than one Key_Usage + set in the enum value, the function would return true if *any* of the allowed + usages were set, instead of if *all* of the allowed usages are set. + GH #591 (CVE-2016-6879) + +* Incompatible changes in DLIES: Previously the input to the KDF was + the concatenation of the (ephemeral) public key and the secret value + derived by the key agreement operation. Now the input is only the + secret value obtained by the key agreement operation. That's how it + is specified in the original paper "DHIES: An encryption scheme + based on Diffie-Hellman Problem" or in BSI technical guideline + TR-02102-1 for example. In addition to the already present + XOR-encrypion/decryption mode it's now possible to use DLIES with a + block cipher. Furthermore the order of the output was changed from + {public key, tag, ciphertext} to {public key, ciphertext, tag}. Both + modes are compatible with BouncyCastle. + +* Add initial PKCS #11 support (GH #507). Currently includes a low level + wrapper to all of PKCS #11 (p11.h) and high level code for RSA and ECDSA + signatures and hardware RNG access. + +* Add ECIES encryption scheme, compatible with BouncyCastle (GH #483) + +* Add ECKCDSA signature algorithm (GH #504) + +* Add KDF1 from ISO 18033 (GH #483) + +* Add FRP256v1 curve (GH #551) + +* Changes for userspace PRNGs HMAC_DRBG and HMAC_RNG (GH #520 and #593) + + These RNGs now derive from Stateful_RNG which handles issues like periodic + reseeding and (on Unix) detecting use of fork. Previously these measures were + included only in HMAC_RNG. + + Stateful_RNG allows reseeding from another RNG and/or a specified set of + entropy sources. For example it is possible to configure a HMAC_DRBG to reseed + using a PKCS #11 token RNG, the CPU's RDSEED instruction, and the system RNG + but disabling all other entropy polls. + +* AutoSeeded_RNG now uses NIST SP800-90a HMAC_DRBG(SHA-384). (GH #520) + +* On Windows and Unix systems, the system PRNG is used as the sole reseeding + source for a default AutoSeeded_RNG, completely skipping the standard entropy + polling code. New constructors allow specifying the reseed RNG and/or entropy + sources. (GH #520) + +* The `hres_timer` entropy source module has been removed. Timestamp inputs to + the RNG are now handled as additional_data inputs to HMAC_DRBG. + +* Add RDRAND_RNG which directly exposes the CPU RNG (GH #543) + +* Add PKCS #1 v1.5 id for SHA-512/256 (GH #554) + +* Add X509_Time::to_std_timepoint (GH #560) + +* Fix a bug in ANSI X9.23 padding mode, which returned one byte more + than the given block size (GH #529). + +* Fix bug in SipHash::clear, which did not reset all state (GH #547) + +* Fixes for FreeBSD (GH #517) and OpenBSD (GH #523). The compiler defaults + to Clang on FreeBSD now. + +* SonarQube static analysis integration (GH #592) + +* Switched Travis CI to Ubuntu 14.04 LTS (GH #592) + +* Added ARM32, ARM64, PPC32, PPC64, and MinGW x86 cross compile targets to Travis CI (GH #608) + +* Clean up in TLS ciphersuite handling (GH #583) + +* Threefish-512 AVX2 optimization work (GH #581) + +* Remove build configuration host and timestamp from build.h + This makes this header reproducible and allows using ccache's direct mode + (GH #586 see also #587) + +* Prevent building for x86-64 with x86-32 compiler and the reverse (GH #585) + +* Avoid build problem on 32-bit userspace ARMv8 (GH #563) + +* Refactor of internal MP headers (GH #549) + +* Avoid MSVC C4100 warning (GH #525) + +* Change botan.exe to botan-cli.exe on Windows to workaround VC issue (GH #584) + +* More tests for RSA-KEM (GH #538), DH (GH #556), EME (GH #553), + cipher mode padding (GH #529), CTS mode (GH #531), + KDF1/ISO18033 (GH #537), OctetString (GH #545), OIDs (GH #546), + parallel hash (GH #548), charset handling (GH #555), + BigInt (GH #558), HMAC_DRBG (GH #598 #600) + +* New deprecations. See the full list in doc/deprecated.txt + + The X9.31 and HMAC_RNG RNGs are deprecated. + If you need a userspace PRNG, use HMAC_DRBG (or AutoSeeded_RNG + which is HMAC_DRBG with defaults). + + Support for getting entropy from EGD is deprecated, and will be + removed in a future release. The developers believe that it is + unlikely that any modern system requires EGD and so the code is now + dead weight. If you rely on EGD support, you should contact the + developers by email or GitHub ASAP. + + The TLS ciphersuites using 3DES and SEED are deprecated and will be + removed in a future release. + + ECB mode Cipher_Mode is deprecated and will be removed in a future + release. + + Support for BeOS/Haiku has not been tested in 5+ years and is in an + unknown state. Unless reports are received of successful builds and + use on this platform, support for BeOS/Haiku will be removed in a + future release. + +Version 1.11.30, 2016-06-19 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* In 1.11.23 a bug was introduced such that CBC-encrypted TLS packets + containing no plaintext bytes at all were incorrectly rejected with + a MAC failure. Records like this are used by OpenSSL in TLS 1.0 + connections in order to randomize the IV. + +* A bug in GCM caused incorrect results if the 32-bit counter field + overflowed. This bug has no implications on the security but affects + interoperability. + + With a 96-bit nonce, this could only occur if at least 2**32 128-bit + blocks (64 GiB) were encrypted. This actually exceeds the maximum + allowable length of a GCM plaintext; when messages longer than + 2**32 - 2 blocks are encrypted, GCM loses its security properties. + + In addition to 96-bit nonces, GCM also supports nonces of arbitrary + length using a different method which hashes the provided nonce + under the authentication key. When using such a nonce, the last 4 + bytes of the resulting CTR input might be near the overflow + boundary, with the probability of incorrect overflow increasing with + longer messages. when encrypting 256 MiB of data under a random 128 + bit nonce, an incorrect result would be produced about 1/256 of the + time. With 1 MiB texts, the probability of error is reduced to 1/65536. + + Since TLS uses GCM with 96 bit nonces and limits the length of any + record to far less than 64 GiB, TLS GCM ciphersuites are not + affected by this bug. + + Reported by Juraj Somorovsky, described also in "Nonce-Disrespecting + Adversaries: Practical Forgery Attacks on GCM in TLS" + (https://eprint.iacr.org/2016/475.pdf) + +* Previously when generating a new self-signed certificate or PKCS #10 + request, the subject DN was required to contain both common name + (CN) and country (C) fields. These restrictions have been removed. + GH #496 + +* The Transform and Keyed_Transform interfaces has been removed. The + two concrete implementations of these interfaces were Cipher_Mode + and Compressor_Transform. The Cipher_Mode interface remains unchanged + as the Transform and Keyed_Transform signatures have moved to it; + no changes to Cipher_Mode usage should be necessary. Any uses of + Transform& or Keyed_Transform& to refer to a cipher should be replaced + by Cipher_Mode&. The compression algorithm interface has changed; the start + function now takes the per-message compression ratio to use. Previously the + compression level to use had to be set once, at creation time, and + the required ``secure_vector`` argument to ``start`` was required to be empty. + The new API is documented in `compression.rst` in the manual. + +* Add IETF versions of the ChaCha20Poly1305 TLS ciphersuites from + draft-ietf-tls-chacha20-poly1305-04. The previously implemented + (non-standard) ChaCha20Poly1305 ciphersuites from + draft-agl-tls-chacha20poly1305 remain but are deprecated. + +* The OCB TLS ciphersuites have been updated to use the new nonce + scheme from draft-zauner-tls-aes-ocb-04. This is incompatible with + previous versions of the draft, and the ciphersuite numbers used for + the (still experimental) OCB ciphersuites have changed. + +* Previously an unknown critical extension caused X.509 certificate + parsing to fail; such a cert could not be created at all. Now + parsing succeeds and the certificate validation fails with + an error indicating an unknown critical extension. GH #469 + +* X509_CRL previously had an option to cause it to ignore unknown + critical extensions. This has been removed. + +* Added StreamCipher::seek allowing seeking to arbitrary position + in the key stream. Currently only implemented for ChaCha. (GH #497) + +* Added support for ChaCha stream cipher with 8 or 12 rounds. + +* Add ECGDSA signature algorithm (GH #479) + +* Add support for label argument to KDFs (GH #495) + +* Add NIST SP800-108 and 56C KDFs (GH #481) + +* Support for Card Verifiable Certificates and the obsolete EMSA1_BSI + signature padding scheme have been removed. (GH #487) + +* A bug in the IETF version of ChaCha20Poly1305 (with 96 bit nonces) + caused incorrect computation when the plaintext or AAD was exactly + a multiple of 16 bytes. + +* Fix return type of TLS_Reader::get_u32bit, which was truncated to + 16 bits. This only affected decoding of session ticket lifetimes. + GH #478 + +* Fix OS X dylib naming problem (GH #468 #467) + +* Fix bcrypt function under Python 3 (GH #461) + +* The ``unix_procs`` entropy source is deprecated and will be removed + in a future release. This entropy source attempts to get entropy by + running Unix programs like ``arp``, ``netstat``, and ``dmesg`` which + produce information which may be difficult for a remote attacker to + guess. This exists primarily as a last-ditch for Unix systems + without ``/dev/random``. But at this point such systems effectively + no longer exist, and the use of ``fork`` and ``exec`` by the library + complicates effective application sandboxing. + +* Changes to avoid implicit cast warnings in Visual C++ (GH #484) + +Version 1.10.13, 2016-04-23 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Use constant time modular inverse algorithm to avoid possible + side channel attack against ECDSA (CVE-2016-2849) + +* Use constant time PKCS #1 unpadding to avoid possible side channel + attack against RSA decryption (CVE-2015-7827) + +* Avoid a compilation problem in OpenSSL engine when ECDSA was + disabled. Gentoo bug 542010 + +Version 1.11.29, 2016-03-20 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* CVE-2016-2849 DSA and ECDSA used a modular inverse function which + had input dependent loops. It is possible a side channel attack on + this function could be used to recover sufficient information about + the nonce k to mount a lattice attack and recover the private key. + Found by Sean Devlin. + +* CVE-2016-2850 The TLS client did not check that the signature + algorithm or ECC curve a v1.2 server used was actually acceptable by + the policy. This would allow a server who ignored the preferences + indicated in the client to use a weak algorithm, and may allow MITM + attacks by an attacker who can break MD5 signatures or 160 bit ECC + in real time. The server similarly failed to check on the hash a + client used during client certificate authentication. + +* Reject empty TLS records at the record processing layer since such a + record is not valid regardless of the record type. Later checks + already correctly rejected empty records, but during processing such + a record, a pointer to the end of the vector was created, causing a + assertion failure under checked iterators. Found by Juraj Somorovsky. + +* Add PK_Decryptor::decrypt_or_random which allows an application to + atomically (in constant time) check that a decrypted ciphertext has + the expected length and/or apply content checks on the result. This + is used by the TLS server for decrypting PKCS #1 v1.5 RSA ciphertexts. + Previously the server used a implementation which was potentially + vulnerable to side channels. + +* Add support for processing X.509 name constraint extension during + path validation. GH #454 + +* Add X509_Certificate::v3_extensions which allows retreiving the + raw binary of all certificate extensions, including those which + are not known to the library. This allows processing of custom + extensions. GH #437 + +* Add support for module policies which are a preconfigured set of + acceptable or prohibited modules. A policy based on BSI TR-02102-1 + is included. GH #439 #446 + +* Support for the deprecated TLS heartbeat extension has been removed. + +* Support for the deprecated TLS minimum fragment length extension has + been removed. + +* SRP6 support is now optional in TLS + +* Support for negotiating MD5 and SHA-224 signatures in TLS v1.2 has + been removed. MD5 signatures are demonstratably insecure in TLS, + SHA-224 is rarely used. + +* Support for negotiating ECC curves secp160r1, secp160r2, secp160k1, + secp192k1, secp192r1 (P-192), secp224k1, secp224r1 (P-224), and + secp256k1 have been removed from the TLS implementation. All were + already disabled in the default policy. + +* HMAC_RNG now has an explicit check for fork using pid comparisons. + It also includes the pid and system and CPU clocks into the PRF + computation to help reduce the risk of pid wraparound. Even so, + applications using fork and userspace RNGs should explicitly reseed + all such RNGs whenever possible. + +* Deprecation warning: support for DSA certificates in TLS is + deprecated and will be removed in a future release. + +* Deprecation warning: in addition to the algorithms deprecated in + 1.11.26, the following algorithms are now deprecated and will be + removed in a future release: Rabin-Williams signatures, TEA, XTEA. + +* Deprecation warning: the library has a number of compiled in MODP + and ECC DL parameters. All MODP parameter sets under 2048 bits and + all ECC parameters under 256 bits are deprecated and will be removed + in a future release. This includes the MODP groups "modp/ietf/1024", + "modp/srp/1024", "modp/ietf/1536", "modp/srp/1536" and the ECC + groups "secp160k1", "secp160r1", "secp160r2", "secp192k1", + "secp192r1", "secp224k1", "secp224r1", "brainpool160r1", + "brainpool192r1", "brainpool224r1", "x962_p192v2", "x962_p192v3", + "x962_p239v1", "x962_p239v2" and "x962_p239v3". Additionally all + compiled in DSA parameter sets ("dsa/jce/1024", "dsa/botan/2048", + and "dsa/botan/3072") are also deprecated. + +* RDSEED/RDRAND polling now retries if the operation fails. GH #373 + +* Fix various minor bugs found by static analysis with PVS-Studio (GH#421), + Clang analyzer (GH #441), cppcheck (GH #444, #445), and Coverity. + +* Add --with-valgrind configure option to enable building against the + valgrind client API. This currently enables checking of const time + operations using memcheck. + +* Fix remaining Wshadow warnings. Enable Wshadow in build. GH #427 + +* Use noexcept in VS 2015 GH #429 + +* On Windows allow the user to explicitly request symlinks be used + as part of the build. Likely only useful for someone working on + the library itself. GH #430 + +* Remove use of TickCount64 introduced in 1.11.27 which caused problem + with downstream distributors/users building XP compatiable binaries + which is still an option even in VS 2015 + +* MCEIES requires KDF1 at runtime but did not require it be enabled + in the build. GH #369 + +* Small optimizations to Keccak hash + +* Support for locking allocator on Windows using VirtualLock. GH #450 + +Version 1.18.15, 2016-02-13 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +* NOTE WELL: Botan 1.8 is not supported for security issues anymore. + Moving to 1.10 or 1.11 is certainly recommended. +* Fix CVE-2014-9742: Insufficient randomness in Miller-Rabin primality check +* Fix CVE-2016-2194: Infinite loop in modulur square root algorithm +* Fix CVE-2015-5726: Crash in BER decoder +* Fix CVE-2015-5727: Excess memory allocation in BER decoder + Note: Unlike the fix in 1.10 which checks that the source actually + contains enough data to satisfy the read before allocating the + memory, 1.8.15 simply rejects all ASN.1 blocks larger than 1 MiB. + This simpler check avoids the problem without breaking ABI. + +Version 1.10.12, 2016-02-03 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* In 1.10.11, the check in PointGFp intended to check the affine y + argument actually checked the affine x again. Reported by Remi Gacogne + + The CVE-2016-2195 overflow is not exploitable in 1.10.11 due to an + additional check in the multiplication function itself which was + also added in that release, so there are no security implications + from the missed check. However to avoid confusion the change was + pushed in a new release immediately. + + The 1.10.11 release notes incorrectly identified CVE-2016-2195 as CVE-2016-2915 + +Version 1.10.11, 2016-02-01 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Resolve heap overflow in ECC point decoding. CVE-2016-2195 + +* Resolve infinite loop in modular square root algorithm. + CVE-2016-2194 + +* Correct BigInt::to_u32bit to not fail on integers of exactly 32 bits. + GH #239 + +Version 1.11.28, 2016-02-01 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* One of the checks added while addressing CVE-2016-2195 was incorrect + and could cause needless assertion failures. + +Version 1.11.27, 2016-02-01 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* SECURITY: Avoid heap overflow in ECC point decoding. This could + likely result in remote code execution. CVE-2016-2195 + +* SECURITY: Avoid one word heap overflow in P-521 reduction function. + This could potentially lead to remote code execution or other + attack. CVE-2016-2196. + +* SECURITY: Avoid infinite or near-infinite loop during modular square + root algorithm with invalid inputs. CVE-2016-2194 + +* Add Blake2b hash function. GH #413 + +* Use m_ prefix on all member variables. GH #398 and #407 + +* Use final qualifier on many classes. GH #408 + +* Use noreturn attribute on assertion failure function to assist + static analysis. GH #403 + +* Use TickCount64 and MemoryStatusEx in the Windows entropy source. + Note these calls are only available in Vista/Server 2008. No + accomodations are made for XP or Server 2003, both of which are + no longer patched by the vendor. GH #365 + +Version 1.11.26, 2016-01-04 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Deprecation warnings: Nyberg-Rueppel signatures, MARS, RC2, RC5, + RC6, SAFER, HAS-160, RIPEMD-128, MD2 and support for the TLS minimum + fragment length extensions are all being considered for removal in a + future release. If there is a compelling use case for keeping any of + them in the library, please open a discussion ticket on GitHub. + +* Support for the TLS extended master secret extension (RFC 7627) has + been added. + +* The format of serialized TLS sessions has changed to add a flag + indicating support for the extended master secret flag, which is + needed for proper handling of the extension. + +* Root all exceptions thrown by the library in the ``Botan::Exception`` class. + Previously the library would in many cases throw ``std::runtime_error`` + or ``std::invalid_argument`` exceptions which would make it hard to + determine the source of the error in some cases. + +* The command line interface has been mostly rewritten. The syntax of + many of the sub-programs has changed, and a number have been + extended with new features and options. + +* Correct an error in PointGFp multiplication when multiplying a point + by the scalar value 3. PointGFp::operator* would instead erronously + compute it as if the scalar was 1 instead. + +* Enable RdRand entropy source on Windows/MSVC. GH #364 + +* Add Intel's RdSeed as entropy source. GH #370 + +* Add preliminary support for accessing TPM v1.2 devices. Currently + random number generation, RSA key generation, and signing are + supported. Tested using Trousers and an ST TPM + +* Add generalized interface for KEM (key encapsulation) techniques. Convert + McEliece KEM to use it. The previous interfaces McEliece_KEM_Encryptor and + McEliece_KEM_Decryptor have been removed. The new KEM interface now uses a KDF + to hash the resulting keys; to get the same output as previously provided by + McEliece_KEM_Encryptor, use "KDF1(SHA-512)" and request exactly 64 bytes. + +* Add support for RSA-KEM from ISO 18033-2 + +* Add support for ECDH in the OpenSSL provider + +* Fix a bug in DataSource::discard_next() which could cause either an + infinite loop or the discarding of an incorrect number of bytes. + Reported on mailing list by Falko Strenzke. + +* Previously if BOTAN_TARGET_UNALIGNED_MEMORY_ACCESS_OK was defined, + the code doing low level loads/stores would use pointer casts to + access larger words out of a (potentially misaligned) byte array, + rather than using byte-at-a-time accesses. However even on platforms + such as x86 where this works, it triggers UBSan errors under Clang. + Instead use memcpy, which the C standard says is usable for such + purposes even with misaligned values. With recent GCC and Clang, the + same code seems to be emitted for either approach. + +* Avoid calling memcpy, memset, or memmove with a length of zero to + avoid undefined behavior, as calling these functions with an invalid + or null pointer, even with a length of zero, is invalid. Often there + are corner cases where this can occur, such as pointing to the very + end of a buffer. + +* The function ``RandomNumberGenerator::gen_mask`` (added in 1.11.20) + had undefined behavior when called with a bits value of 32 or + higher, and was tested to behave in unpleasant ways (such as + returning zero) when compiled by common compilers. This function was + not being used anywhere in the library and rather than support + something without a use case to justify it it seemed simpler to + remove it. Undefined behavior found by Daniel Neus. + +* Support for using ``ctgrind`` for checking const time blocks has + been replaced by calling the valgrind memcheck APIs directly. This + allows const-time behavior to be tested without requiring a modified + valgrind binary. Adding the appropriate calls requires defining + BOTAN_HAS_VALGRIND in build.h. A binary compiled with this flag set + can still run normally (though with some slight runtime overhead). + +* Export MGF1 function mgf1_mask GH #380 + +* Work around a problem with some antivirus programs which causes the + ``shutil.rmtree`` and ``os.makedirs`` Python calls to occasionally + fail. The could prevent ``configure.py`` from running sucessfully + on such systems. GH #353 + +* Let ``configure.py`` run under CPython 2.6. GH #362 + +Version 1.11.25, 2015-12-07 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* In this release the test suite has been largely rewritten. Previously the + tests had internally used several different test helper frameworks created or + adopted over time, each of which was insufficient on its own for testing the + entire library. These have been fully converged on a new framework which + suffices for all of the tests. There should be no user-visible change as a + result of this, except that the output format of `botan-test` has changed. + +* Improved side channel countermeasures for the table based AES implementation. + The 4K T tables are computed (once) at runtime to avoid various cache based + attacks which are possible due to shared VMM mappings of read only tables. + Additionally every cache line of the table is read from prior to processing + the block(s). + +* Support for the insecure ECC groups secp112r1, secp112r2, secp128r1, and + secp128r2 has been removed. + +* The portable version of GCM has been changed to run using only + constant time operations. + +* Work around a bug in MSVC 2013 std::mutex which on some Windows + versions can result in a deadlock during static initialization. On + Windows a CriticalSection is used instead. Analysis and patch from + Matej Kenda (TopIT d.o.o.). GH #321 + +* The OpenSSL implementation of RC4 would return the wrong value from `name` if + leading bytes of the keystream had been skipped in the output. + +* Fixed the signature of the FFI function botan_pubkey_destroy, which took the + wrong type and was not usable. + +* The TLS client would erronously reject any server key exchange packet smaller + than 6 bytes. This prevented negotiating a plain PSK TLS ciphersuite with an + empty identity hint. ECDHE_PSK and DHE_PSK suites were not affected. + +* Fixed a bug that would cause the TLS client to occasionally reject a valid + server key exchange message as having an invalid signature. This only affected + DHE and SRP ciphersuites. + +* Support for negotiating use of SHA-224 in TLS has been disabled in the + default policy. + +* Added `remove_all` function to the `TLS::Session_Manager` interface + +* Avoid GCC warning in pedantic mode when including bigint.h GH #330 + +Version 1.11.24, 2015-11-04 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* When the bugs affecting X.509 path validation were fixed in 1.11.23, a check + in Credentials_Manager::verify_certificate_chain was accidentally removed + which caused path validation failures not to be signaled to the TLS layer. + Thus in 1.11.23 certificate authentication in TLS is bypassed. + Reported by Florent Le Coz in GH #324 + +* Fixed an endian dependency in McEliece key generation which caused + keys to be generated differently on big and little endian systems, + even when using a deterministic PRNG with the same seed. + +* In `configure,py`, the flags for controlling use of debug, sanitizer, and + converage information have been split out into individual options + `--with-debug-info`, `--with-sanitizers`, and `--with-coverage`. These allow + enabling more than one in a build in a controlled way. The `--build-mode` flag + added in 1.11.17 has been removed. + +Version 1.11.23, 2015-10-26 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* CVE-2015-7824: An information leak allowed padding oracle attacks against + TLS CBC decryption. Found in a review by Sirrix AG and 3curity GmbH. + +* CVE-2015-7825: Validating a malformed certificate chain could cause an + infinite loop. Found in a review by Sirrix AG and 3curity GmbH. + +* CVE-2015-7826: X.509 path validation violated RFC 6125 and would accept + certificates which should not validate under those rules. In particular botan + would accept wildcard certificates as matching in situations where it should + not (for example it would erroneously accept '*.example.com' as a valid + wildcard for 'foo.bar.example.com') + +* CVE-2015-7827: The routines for decoding PKCS #1 encryption and OAEP blocks + have been rewritten to run without secret indexes or branches. These + cryptographic operations are vulnerable to oracle attacks, including via side + channels such as timing or cache-based analysis. In theory it would be + possible to attack the previous implementations using such a side channel, + which could allow an attacker to mount a plaintext recovery attack. + + By writing the code such that it does not depend on secret inputs for branch + or memory indexes, such a side channel would be much less likely to exist. + + The OAEP code has previously made an attempt at constant time operation, but + it used a construct which many compilers converted into a conditional jump. + +* Add support for using ctgrind (https://github.com/agl/ctgrind) to test that + sections of code do not use secret inputs to decide branches or memory indexes. + The testing relies on dynamic checking using valgrind. + + So far PKCS #1 decoding, OAEP decoding, Montgomery reduction, IDEA, and + Curve25519 have been notated and confirmed to be constant time on Linux/x86-64 + when compiled by gcc. + +* Public key operations can now be used with specified providers by passing an + additional parameter to the constructor of the PK operation. + +* OpenSSL RSA provider now supports signature creation and verification. + +* The blinding code used for RSA, Diffie-Hellman, ElGamal and Rabin-Williams now + periodically reinitializes the sequence of blinding values instead of always + deriving the next value by squaring the previous ones. The reinitializion + interval can be controlled by the build.h parameter BOTAN_BLINDING_REINIT_INTERVAL. + +* A bug decoding DTLS client hellos prevented session resumption for succeeding. + +* DL_Group now prohibits creating a group smaller than 1024 bits. + +* Add System_RNG type. Previously the global system RNG was only accessible via + `system_rng` which returned a reference to the object. However is at times + useful to have a unique_ptr<RandomNumberGenerator> which will be either the + system RNG or an AutoSeeded_RNG, depending on availability, which this + additional type allows. + +* New command line tools `dl_group` and `prime` + +* The `configure.py` option `--no-autoload` is now also available + under the more understandable name `--minimized-build`. + +* Note: 1.11.22 was briefly released on 2015-10-26. The only difference between + the two was a fix for a compilation problem in the OpenSSL RSA code. As the + 1.11.22 release had already been tagged it was simpler to immediately release + 1.11.23 rather than redo the release. + +Version 1.11.21, 2015-10-11 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add new methods for creating types such as BlockCiphers or HashFunctions, + T::providers() returning list of provider for a type, and T::create() creating + a new object of a specified provider. The functions in lookup.h forward to + these new APIs. A change to the lookup system in 1.11.14 had caused problems + with static libraries (GH #52). These problems have been fixed as part of these + changes. GH #279 + +* Fix loading McEliece public or private keys with PKCS::load_key / X509::load_key + +* Add `mce` command line tool for McEliece key generation and file encryption + +* Add Darwin_SecRandom entropy source which uses `SecRandomCopyBytes` + API call for OS X and iOS, as this call is accessible even from a + sandboxed application. GH #288 + +* Add new HMAC_DRBG constructor taking a name for the MAC to use, rather + than a pointer to an object. + +* The OCaml module is now a separate project at + https://github.com/randombit/botan-ocaml + +* The encrypted sqlite database support in contrib has moved to + https://github.com/randombit/botan-sqlite + +* The Perl XS module has been removed as it was no longer maintained. + +Version 1.11.20, 2015-09-07 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Additional countermeasures were added to ECC point multiplications + including exponent blinding and randomization of the point + representation to help protect against side channel attacks. + +* An ECDSA provider using OpenSSL has been added. + +* The ordering of algorithm priorities has been reversed. Previously + 255 was the lowest priority and 0 was the highest priority. Now it + is the reverse, with 0 being lowest priority and 255 being highest. + The default priority for the base algorithms is 100. This only + affects external providers or applications which directly set + provider preferences. + +* On OS X, rename libs to avoid trailing version numbers, e.g. + libbotan-1.11.dylib.19 -> libbotan-1.11.19.dylib. This was requested + by the Homebrew project package audit. GH #241, #260 + +* Enable use of CPUID interface with clang. GH #232 + +* Add support for MSVC 2015 debug builds by satisfying C++ allocator + requirements. SO 31802806, GH #236 + +* Make `X509_Time` string parsing and `to_u32bit()` more strict to avoid + integer overflows and other potentially dangerous misinterpretations. + GH #240, #243 + +* Remove all 'extern "C"' declarations from src/lib/math/mp/ because some + of those did throw exceptions and thus cannot be C methods. GH #249 + +* Fix build configuration for clang debug on Linux. GH #250 + +* Fix zlib error when compressing an empty buffer. GH #265 + +* Fix iOS builds by allowing multiple compiler flags with the same name. + GH #266 + +* Fix Solaris build issue caused by `RLIMIT_MEMLOCK`. GH #262 + +Version 1.11.19, 2015-08-03 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* SECURITY: The BER decoder would crash due to reading from offset 0 + of an empty vector if it encountered a BIT STRING which did not + contain any data at all. As the type requires a 1 byte field this is + not valid BER but could occur in malformed data. Found with afl. + CVE-2015-5726 + +* SECURITY: The BER decoder would allocate a fairly arbitrary amount + of memory in a length field, even if there was no chance the read + request would succeed. This might cause the process to run out of + memory or invoke the OOM killer. Found with afl. + CVE-2015-5727 + +* The TLS heartbeat extension is deprecated and unless strong arguments + are raised in its favor it will be removed in a future release. + Comment at https://github.com/randombit/botan/issues/187 + +* The x86-32 assembly versions of MD4, MD5, SHA-1, and Serpent and the + x86-64 version of SHA-1 have been removed. With compilers from this + decade the C++ versions are significantly faster. The SSE2 versions + of SHA-1 and Serpent remain, as they are still the fastest version + for processors with SIMD extensions. GH #216 + +* BigInt::to_u32bit would fail if the value was exactly 32 bits. + GH #220 + +* Botan is now fully compaitible with _GLIBCXX_DEBUG. GH #73 + +* BigInt::random_integer distribution was not uniform. GH #108 + +* Added unit testing framework Catch. GH #169 + +* Fix `make install`. GH #181, #186 + +* Public header `fs.h` moved to `internal/filesystem.h`. Added filesystem + support for MSVC 2013 when boost is not available, allowing tests to run on + those systems. GH #198, #199 + +* Added os "android" and fix Android compilation issues. GH #203 + +* Drop support for Python 2.6 for all Botan Python scripts. GH #217 + +Version 1.10.10, 2015-08-03 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* SECURITY: The BER decoder would crash due to reading from offset 0 + of an empty vector if it encountered a BIT STRING which did not + contain any data at all. As the type requires a 1 byte field this is + not valid BER but could occur in malformed data. Found with afl. + CVE-2015-5726 + +* SECURITY: The BER decoder would allocate a fairly arbitrary amount + of memory in a length field, even if there was no chance the read + request would succeed. This might cause the process to run out of + memory or invoke the OOM killer. Found with afl. + CVE-2015-5727 + +* Due to an ABI incompatible (though not API incompatible) change in + this release, the version number of the shared object has been + increased. + +* The default TLS policy no longer allows RC4. + +* Fix a signed integer overflow in Blue Midnight Wish that may cause + incorrect computations or undefined behavior. + +Version 1.11.18, 2015-07-05 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* In this release Botan has switched VCS from ``monotone`` to ``git``, + and is now hosted on github at https://github.com/randombit/botan + +* The TLS client called ``std::set_difference`` on an invalid iterator + pair. This could potentially lead to a crash depending on the + compiler and STL implementation. It also would trigger assertion + failures when using checked iterators. GH #73 + +* Remove code constructs which triggered errors under MSVC and GCC + debug iterators. The primary of these was an idiom of ``&vec[x]`` to + create a pointer offset of a ``std::vector``. This failed when x was + set equal to ``vec.size()`` to create the one-past-the-end address. + The pointer in question was never dereferenced, but it triggered + the iterator debugging checks which prevented using these valuble + analysis tools. From Simon Warta and Daniel Seither. GH #125 + +* Several incorrect or missing module dependencies have been fixed. These + often prevented a successful build of a minimized amalgamation when + only a small set of algorithms were specified. GH #71 + From Simon Warta. + +* Add an initial binding to OCaml. Currently only hashes, RNGs, and + bcrypt are supported. + +* The default key size generated by the ``keygen`` tool has increased + to 2048 bits. From Rene Korthaus. + +* The ``Botan_types`` namespace, which contained ``using`` declarations + for (just) ``Botan::byte`` and ``Botan::u32bit``, has been removed. + Any use should be replaced by ``using`` declarations for those types + directly. + +Version 1.11.17, 2015-06-18 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* All support for the insecure RC4 stream cipher has been removed + from the TLS implementation. + +* Fix decoding of TLS maximum fragment length. Regardless of what + value was actually negotiated, TLS would treat it as a negotiated + limit of 4096. + +* Fix the configure.py flag ``--disable-aes-ni`` which did nothing of + the sort. + +* Fixed nmake clean target. GitHub #104 + +* Correct buffering logic in ``Compression_Filter``. GitHub #93 and #95 + +Version 1.11.16, 2015-03-29 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* TLS has changed from using the non-standard NPN extension to the IETF + standardized ALPN extension for negotiating an application-level protocol. + Unfortunately the semantics of the exchange have changed with ALPN. Using + NPN, the server offered a list of protocols it advertised, and then the + client chose its favorite. With ALPN, the client offers a list of protocols + and the server chooses. The the signatures of both the TLS::Client and + TLS::Server constructors have changed to support this new flow. + +* Optimized ECDSA signature verification thanks to an observation by + Dr. Falko Strenzke. On some systems verifications are between 1.5 + and 2 times faster than in 1.11.15. + +* RSA encrypt and decrypt operations using OpenSSL have been added. + +* Public key operation types now handle all aspects of the operation, + such as hashing and padding for signatures. This change allows + supporting specialized implementations which only support particular + padding types. + +* Added global timeout to HMAC_RNG entropy reseed. The defaults are + the values set in the build.h macros ``BOTAN_RNG_AUTO_RESEED_TIMEOUT`` + and ``BOTAN_RNG_RESEED_DEFAULT_TIMEOUT``, but can be overriden + on a specific poll with the new API call reseed_with_timeout. + +* Fixed Python cipher update_granularity() and default_nonce_length() + functions + +* The library now builds on Visual C++ 2013 + +* The GCM update granularity was reduced from 4096 to 16 bytes. + +* Fix a bug that prevented building the amalgamation until a non-amalgamation + configuration was performed first in the same directory. + +* Add Travis CI integration. Github pull 60. + +Version 1.11.15, 2015-03-08 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Support for RC4 in TLS, already disabled by default, is now deprecated. + The RC4 ciphersuites will be removed entirely in a future release. + +* A bug in ffi.cpp meant Python could only encrypt. Github issue 53. + +* When comparing two ASN.1 algorithm identifiers, consider empty and + NULL parameters the same. + +* Fixed memory leaks in TLS and cipher modes introduced in 1.11.14 + +* MARK-4 failed when OpenSSL was enabled in the build in 1.11.14 + because the OpenSSL version ignored the skip parameter. + +* Fix compilation problem on OS X/clang + +* Use BOTAN_NOEXCEPT macro to work around lack of noexcept in VS 2013 + +Version 1.11.14, 2015-02-27 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* The global state object previously used by the library has been removed. + This includes the global PRNG. The library can be safely initialized + multiple times without harm. + + The engine code has also been removed, replaced by a much lighter-weight + object registry system which provides lookups in faster time and with less + memory overhead than the previous approach. + + One caveat of the current system with regards to static linking: because only + symbols already mentioned elsewhere in the program are included in the final + link step, few algorithms will be available through the lookup system by + default, even though they were compiled into the library. Your application + must explicitly reference the types you require or they will not end up + being available in the final binary. See also Github issue #52 + + If you intend to build your application against a static library and don't + want to explicitly reference each algo object you might attempt to look up by + string, consider either building with ``--via-amalgamation``, or else (much + simpler) using the amalgamation directly. + +* The new ``ffi`` submodule provides a simple C API/ABI for a number of useful + operations (hashing, ciphers, public key operations, etc) which is easily + accessed using the FFI modules included in many languages. + +* A new Python wrapper (in ``src/lib/python/botan.py``) using ``ffi`` and the Python + ``ctypes`` module is available. The old Boost.Python wrapper has been removed. + +* Add specialized reducers for P-192, P-224, P-256, and P-384 + +* OCB mode, which provides a fast and constant time AEAD mode without requiring + hardware support, is now supported in TLS, following + draft-zauner-tls-aes-ocb-01. Because this specification is not yet finalized + is not yet enabled by the default policy, and the ciphersuite numbers used are + in the experimental range and may conflict with other uses. + +* Add ability to read TLS policy from a text file using ``TLS::Text_Policy``. + +* The amalgamation now splits off any ISA specific code (for instance, that + requiring SSSE3 instruction sets) into a new file named (for instance) + ``botan_all_ssse3.cpp``. This allows the main amalgamation file to be compiled + without any special flags, so ``--via-amalgamation`` builds actually work now. + This is disabled with the build option ``--single-amalgamation-file`` + +* PBKDF and KDF operations now provide a way to write the desired output + directly to an application-specified area rather than always allocating a new + heap buffer. + +* HKDF, previously provided using a non-standard interface, now uses the + standard KDF interface and is retrievable using get_kdf. + +* It is once again possible to build the complete test suite without requiring + any boost libraries. This is currently only supported on systems supporting + the readdir interface. + +* Remove use of memset_s which caused problems with amalgamation on OS X. + Github 42, 45 + +* The memory usage of the counter mode implementation has been reduced. + Previously it encrypted 256 blocks in parallel as this leads to a slightly + faster counter increment operation. Instead CTR_BE simply encrypts a buffer + equal in size to the advertised parallelism of the cipher implementation. + This is not measurably slower, and dramatically reduces the memory use of + CTR mode. + +* The memory allocator available on Unix systems which uses mmap and mlock to + lock a pool of memory now checks environment variable BOTAN_MLOCK_POOL_SIZE + and interprets it as an integer. If the value set to a smaller value then the + library would originally have allocated (based on resource limits) the user + specified size is used instead. You can also set the variable to 0 to + disable the pool entirely. Previously the allocator would consume all + available mlocked memory, this allows botan to coexist with an application + which wants to mlock memory for its own uses. + +* The botan-config script previously installed on Unix systems has been + removed. Its functionality is replaced by the ``config`` command of the + ``botan`` tool executable, for example ``botan config cflags`` instead of + ``botan-config --cflags``. + +* Added a target for POWER8 processors + +Version 1.11.13, 2015-01-11 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* All support for the insecure SSLv3 protocol and the server support + for processing SSLv2 client hellos has been removed. + +* The command line tool now has ``tls_proxy`` which negotiates TLS with + clients and forwards the plaintext to a specified port. + +* Add MCEIES, a McEliece-based integrated encryption system using + AES-256 in OCB mode for message encryption/authentication. + +* Add DTLS-SRTP negotiation defined in RFC 5764 + +* Add SipHash + +* Add SHA-512/256 + +* The format of serialized TLS sessions has changed. Additiionally, PEM + formatted sessions now use the label of "TLS SESSION" instead of "SSL SESSION" + +* Serialized TLS sessions are now encrypted using AES-256/GCM instead of a + CBC+HMAC construction. + +* The cryptobox_psk module added in 1.11.4 and previously used for TLS session + encryption has been removed. + +* When sending a TLS heartbeat message, the number of pad bytes to use can now + be specified, making it easier to use for PMTU discovery. + +* If available, zero_mem now uses RtlSecureZeroMemory or memset_s instead of a + byte-at-a-time loop. + +* The functions base64_encode and base64_decode would erroneously + throw an exception if passed a zero-length input. Github issue 37. + +* The Python install script added in version 1.11.10 failed to place the + headers into a versioned subdirectory. + +* Fix the install script when running under Python3. + +* Avoid code that triggers iterator debugging asserts under MSVC 2013. Github + pull 36 from Simon Warta. + +Version 1.11.12, 2015-01-02 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add Curve25519. The implementation is based on curve25519-donna-c64.c + by Adam Langley. New (completely non-standard) OIDs and formats for + encrypting Curve25519 keys under PKCS #8 and including them in + certificates and CRLs have been defined. + +* Add Poly1305, based on the implementation poly1305-donna by Andrew Moon. + +* Add the ChaCha20Poly1305 AEADs defined in draft-irtf-cfrg-chacha20-poly1305-03 + and draft-agl-tls-chacha20poly1305-04. + +* Add ChaCha20Poly1305 ciphersuites for TLS compatible with Google's servers + following draft-agl-tls-chacha20poly1305-04 + +* When encrypted as PKCS #8 structures, Curve25519 and McEliece + private keys default to using AES-256/GCM instead of AES-256/CBC + +* Define OIDs for OCB mode with AES, Serpent and Twofish. + +Version 1.11.11, 2014-12-21 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* The Sqlite3 wrapper has been abstracted to a simple interface for + SQL dbs in general, though Sqlite3 remains the only implementation. + The main logic of the TLS session manager which stored encrypted + sessions to a Sqlite3 database (``TLS::Session_Manager_SQLite``) has + been moved to the new ``TLS::Session_Manager_SQL``. The Sqlite3 + manager API remains the same but now just subclasses + ``TLS::Session_Manager_SQL`` and has a constructor instantiate the + concrete database instance. + + Applications which would like to use a different db can now do so + without having to reimplement the session cache logic simply by + implementing a database wrapper subtype. + +* The CryptGenRandom entropy source is now also used on MinGW. + +* The system_rng API is now also available on systems with CryptGenRandom + +* With GCC use -fstack-protector for linking as well as compiling, + as this is required on MinGW. Github issue 34. + +* Fix missing dependency in filters that caused compilation problem + in amalgamation builds. Github issue 33. + +* SSLv3 support is officially deprecated and will be removed in a + future release. + +Version 1.10.9, 2014-12-13 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed EAX tag verification to run in constant time + +* The default TLS policy now disables SSLv3. + +* A crash could occur when reading from a blocking random device if + the device initially indicated that entropy was available but + a concurrent process drained the entropy pool before the + read was initiated. + +* Fix decoding indefinite length BER constructs that contain a context + sensitive tag of zero. Github pull 26 from Janusz Chorko. + +* The ``botan-config`` script previously tried to guess its prefix from + the location of the binary. However this was error prone, and now + the script assumes the final installation prefix matches the value + set during the build. Github issue 29. + +Version 1.11.10, 2014-12-10 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* An implementation of McEliece code-based public key encryption based + on INRIA's HyMES and secured against a variety of side-channels was + contributed by cryptosource GmbH. The original version is LGPL but + cryptosource has secured permission to release an adaptation under a + BSD license. A CCA2-secure KEM scheme is also included. + + The implementation is further described in + http://www.cryptosource.de/docs/mceliece_in_botan.pdf and + http://cryptosource.de/news_mce_in_botan_en.html + +* DSA and ECDSA now create RFC 6979 deterministic signatures. + +* Add support for TLS fallback signaling (draft-ietf-tls-downgrade-scsv-00). + Clients will send a fallback SCSV if the version passed to the Client + constructor is less than the latest version supported by local policy, so + applications implementing fallback are protected. Servers always check the + SCSV. + +* In previous versions a TLS::Server could service either TLS or DTLS + connections depending on policy settings and what type of client hello it + received. This has changed and now a Server object is initialized for + either TLS or DTLS operation. The default policy previously prohibited + DTLS, precisely to prevent a TCP server from being surprised by a DTLS + connection. The default policy now allows TLS v1.0 or higher or DTLS v1.2. + +* Fixed a bug in CCM mode which caused it to produce incorrect tags when used + with a value of L other than 2. This affected CCM TLS ciphersuites, which + use L=3. Thanks to Manuel Pégourié-Gonnard for the anaylsis and patch. + Bugzilla 270. + +* DTLS now supports timeouts and handshake retransmits. Timeout checking + is triggered by the application calling the new TLS::Channel::timeout_check. + +* Add a TLS policy hook to disable putting the value of the local clock in hello + random fields. + +* All compression operations previously available as Filters are now + performed via the Transformation API, which minimizes memory copies. + Compression operations are still available through the Filter API + using new general compression/decompression filters in comp_filter.h + +* The zlib module now also supports gzip compression and decompression. + +* Avoid a crash in low-entropy situations when reading from /dev/random, when + select indicated the device was readable but by the time we start the read the + entropy pool had been depleted. + +* The Miller-Rabin primality test function now takes a parameter allowing the + user to directly specify the maximum false negative probability they are + willing to accept. + +* PKCS #8 private keys can now be encrypted using GCM mode instead of + unauthenticated CBC. The default remains CBC for compatibility. + +* The default PKCS #8 encryption scheme has changed to use PBKDF2 with + SHA-256 instead of SHA-1 + +* A specialized reducer for P-521 was added. + +* On Linux the mlock allocator will use MADV_DONTDUMP on the pool so + that the contents are not included in coredumps. + +* A new interface for directly using a system-provided PRNG is + available in system_rng.h. Currently only systems with /dev/urandom + are supported. + +* Fix decoding indefinite length BER constructs that contain a context sensitive + tag of zero. Github pull 26 from Janusz Chorko. + +* The GNU MP engine has been removed. + +* Added AltiVec detection for POWER8 processors. + +* Add a new install script written in Python which replaces shell hackery in the + makefiles. + +* Various modifications to better support Visual C++ 2013 and 2015. Github + issues 11, 17, 18, 21, 22. + +Version 1.10.8, 2014-04-10 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* SECURITY: Fix a bug in primality testing introduced in 1.8.3 which + caused only a single random base, rather than a sequence of random + bases, to be used in the Miller-Rabin test. This increased the + probability that a non-prime would be accepted, for instance a 1024 + bit number would be incorrectly classed as prime with probability + around 2^-40. Reported by Jeff Marrison. CVE-2014-9742 + +* The key length limit on HMAC has been raised to 512 bytes, allowing + the use of very long passphrases with PBKDF2. + +Version 1.11.9, 2014-04-10 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* SECURITY: Fix a bug in primality testing introduced in 1.8.3 which + caused only a single random base, rather than a sequence of random + bases, to be used in the Miller-Rabin test. This increased the + probability that a non-prime would be accepted, for instance a 1024 + bit number would be incorrectly classed as prime with probability + around 2^-40. Reported by Jeff Marrison. CVE-2014-9742 + +* X.509 path validation now returns a set of all errors that occurred + during validation, rather than immediately returning the first + detected error. This prevents a seemingly innocuous error (such as + an expired certificate) from hiding an obviously serious error + (such as an invalid signature). The Certificate_Status_Code enum is + now ordered by severity, and the most severe error is returned by + Path_Validation_Result::result(). The entire set of status codes is + available with the new all_statuses call. + +* Fixed a bug in OCSP response decoding which would cause an error + when attempting to decode responses from some widely used + responders. + +* An implementation of HMAC_DRBG RNG from NIST SP800-90A has been + added. Like the X9.31 PRNG implementation, it uses another + underlying RNG for seeding material. + +* An implementation of the RFC 6979 deterministic nonce generator has + been added. + +* Fix a bug in certificate path validation which prevented successful + validation if intermediate certificates were presented out of order. + +* Fix a bug introduced in 1.11.5 which could cause crashes or other + incorrect behavior when a cipher mode filter was followed in the + pipe by another filter, and that filter had a non-empty start_msg. + +* The types.h header now uses stdint.h rather than cstdint to avoid + problems with Clang on OS X. + +Version 1.11.8, 2014-02-13 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* The ``botan`` command line application introduced in 1.11.7 is now + installed along with the library. + +* A bug in certificate path validation introduced in 1.11.6 which + caused all CRL signature checks to fail has been corrected. + +* The ChaCha20 stream cipher has been added. + +* The ``Transformation`` class no longer implements an interface for keying, + this has been moved to a new subclass ``Keyed_Transformation``. + +* The ``Algorithm`` class, which previously acted as a global base for + various types (ciphers, hashes, etc) has been removed. + +* CMAC now supports 256 and 512 bit block ciphers, which also allows + the use of larger block ciphers with EAX mode. In particular this + allows using Threefish in EAX mode. + +* The antique PBES1 private key encryption scheme (which only supports + DES or 64-bit RC2) has been removed. + +* The Square, Skipjack, and Luby-Rackoff block ciphers have been removed. + +* The Blue Midnight Wish hash function has been removed. + +* Skein-512 no longer supports output lengths greater than 512 bits. + +* Skein did not reset its internal state properly if clear() was + called, causing it to produce incorrect results for the following + message. It was reset correctly in final() so most usages should not + be affected. + +* A number of public key padding schemes have been renamed to match + the most common notation; for instance EME1 is now called OAEP and + EMSA4 is now called PSSR. Aliases are set which should allow all + current applications to continue to work unmodified. + +* A bug in CFB encryption caused a few bytes past the end of the final + block to be read. The actual output was not affected. + +* Fix compilation errors in the tests that occurred with minimized + builds. Contributed by Markus Wanner. + +* Add a new ``--destdir`` option to ``configure.py`` which controls + where the install target will place the output. The ``--prefix`` + option continues to set the location where the library expects to be + eventually installed. + +* Many class destructors which previously deleted memory have been + removed in favor of using ``unique_ptr``. + +* Various portability fixes for Clang, Windows, Visual C++ 2013, OS X, + and x86-32. + +Version 1.11.7, 2014-01-10 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Botan's basic numeric types are now defined in terms of the + C99/C++11 standard integer types. For instance ``u32bit`` is now a + typedef for ``uint32_t``, and both names are included in the library + namespace. This should not result in any application-visible + changes. + +* There are now two executable outputs of the build, ``botan-test``, + which runs the tests, and ``botan`` which is used as a driver to call + into various subcommands which can also act as examples of library + use, much in the manner of the ``openssl`` command. It understands the + commands ``base64``, ``asn1``, ``x509``, ``tls_client``, ``tls_server``, + ``bcrypt``, ``keygen``, ``speed``, and various others. As part of this + change many obsolete, duplicated, or one-off examples were removed, + while others were extended with new functionality. Contributions of + new subcommands, new bling for exising ones, or documentation in any + form is welcome. + +* Fix a bug in Lion, which was broken by a change in 1.11.0. The + problem was not noticed before as Lion was also missing a test vector + in previous releases. + +Version 1.10.7, 2013-12-29 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* OAEP had two bugs, one of which allowed it to be used even if the + key was too small, and the other of which would cause a crash during + decryption if the EME data was too large for the associated key. + +Version 1.11.6, 2013-12-29 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* The Boost filesystem and asio libraries are now being used by default. + Pass ``--without-boost`` to ``configure.py`` to disable. + +* The default TLS policy no longer allows SSLv3 or RC4. + +* OAEP had two bugs, one of which allowed it to be used even if the + key was too small, and the other of which would cause a crash during + decryption if the EME data was too large for the associated key. + +* GCM mode now uses the Intel clmul instruction when available + +* Add the Threefish-512 tweakable block cipher, including an AVX2 version + +* Add SIV (from :rfc:`5297`) as a nonce-based AEAD + +* Add HKDF (from :rfc:`5869`) using an experimental PRF interface + +* Add HTTP utility functions and OCSP online checking + +* Add TLS::Policy::acceptable_ciphersuite hook to disable ciphersuites + on an ad-hoc basis. + +* TLS::Session_Manager_In_Memory's constructor now requires a RNG + +Version 1.10.6, 2013-11-10 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* The device reading entropy source now attempts to read from all + available devices. Previously it would break out early if a partial + read from a blocking source occurred, not continuing to read from a + non-blocking device. This would cause the library to fall back on + slower and less reliable techniques for collecting PRNG seed + material. Reported by Rickard Bellgrim. + +* HMAC_RNG (the default PRNG implementation) now automatically reseeds + itself periodically. Previously reseeds only occurred on explicit + application request. + +* Fix an encoding error in EC_Group when encoding using EC_DOMPAR_ENC_OID. + Reported by fxdupont on github. + +* In EMSA2 and Randpool, avoid calling name() on objects after deleting them if + the provided algorithm objects are not suitable for use. Found by Clang + analyzer, reported by Jeffrey Walton. + +* If X509_Store was copied, the u32bit containing how long to cache validation + results was not initialized, potentially causing results to be cached for + significant amounts of time. This could allow a certificate to be considered + valid after its issuing CA's cert expired. Expiration of the end-entity cert + is always checked, and reading a CRL always causes the status to be reset, so + this issue does not affect revocation. Found by Coverity scanner. + +* Avoid off by one causing a potentially unterminated string to be passed to + the connect system call if the library was configured to use a very long path + name for the EGD socket. Found by Coverity Scanner. + +* In PK_Encryptor_EME, PK_Decryptor_EME, PK_Verifier, and PK_Key_Agreement, + avoid dereferencing an unitialized pointer if no engine supported operations + on the key object given. Found by Coverity scanner. + +* Avoid leaking a file descriptor in the /dev/random and EGD entropy sources if + stdin (file descriptor 0) was closed. Found by Coverity scanner. + +* Avoid a potentially undefined operation in the bit rotation operations. Not + known to have caused problems under any existing compiler, but might have + caused problems in the future. Caught by Clang sanitizer, reported by Jeffrey + Walton. + +* Increase default hash iterations from 10000 to 50000 in PBES1 and PBES2 + +* Add a fix for mips64el builds from Brad Smith. + +Version 1.11.5, 2013-11-10 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* The TLS callback signatures have changed - there are now two distinct + callbacks for application data and alerts. TLS::Client and TLS::Server have + constructors which continue to accept the old callback and use it for both + operations. + +* The entropy collector that read from randomness devices had two bugs - it + would break out of the poll as soon as any read succeeded, and it selected on + each device individually. When a blocking source was first in the device list + and the entropy pool was running low, the reader might either block in select + until eventually timing out (continuing on to read from /dev/urandom instead), + or read just a few bytes, skip /dev/urandom, fail to satisfy the entropy + target, and the poll would continue using other (slower) sources. This caused + substantial performance/latency problems in RNG heavy applications. Now all + devices are selected over at once, with the effect that a full read from + urandom always occurs, along with however much (if any) output is available + from blocking sources. + +* Previously AutoSeeded_RNG referenced a globally shared PRNG instance. + Now each instance has distinct state. + +* The entropy collector that runs Unix programs to collect statistical + data now runs multiple processes in parallel, greatly reducing poll + times on some systems. + +* The Randpool RNG implementation was removed. + +* All existing cipher mode implementations (such as CBC and XTS) have been + converted from filters to using the interface previously provided by + AEAD modes which allows for in-place message + processing. Code which directly references the filter objects will break, but + an adaptor filter allows usage through get_cipher as usual. + +* An implementation of CCM mode from RFC 3601 has been added, as well as CCM + ciphersuites for TLS. + +* The implementation of OCB mode now supports 64 and 96 bit tags + +* Optimized computation of XTS tweaks, producing a substantial speedup + +* Add support for negotiating Brainpool ECC curves in TLS + +* TLS v1.2 will not negotiate plain SHA-1 signatures by default. + +* TLS channels now support sending a ``std::vector`` + +* Add a generic 64x64->128 bit multiply instruction operation in mul128.h + +* Avoid potentially undefined operations in the bit rotation operations. Not + known to have caused problems under existing compilers but might break in the + future. Found by Clang sanitizer, reported by Jeffrey Walton. + +Version 1.11.4, 2013-07-25 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* CPU specific extensions are now always compiled if support for the + operations is available at build time, and flags enabling use of + extra operations (such as SSE2) are only included when compiling + files which specifically request support. This means, for instance, + that the SSSE3 and AES-NI implementations of AES are always included + in x86 builds, relying on runtime cpuid checking to prevent their + use on CPUs that do not support those operations. + +* The default TLS policy now only accepts TLS, to minimize surprise + for servers which might not expect to negotiate DTLS. Previously a + server would by default negotiate either protocol type (clients + would only accept the same protocol type as they + offered). Applications which use DTLS or combined TLS/DTLS need to + override ``Policy::acceptable_protocol_version``. + +* The TLS channels now accept a new parameter specifying how many + bytes to preallocate for the record handling buffers, which allows + an application some control over how much memory is used at runtime + for a particular connection. + +* Applications can now send arbitrary TLS alert messages using + ``TLS::Channel::send_alert`` + +* A new TLS policy ``NSA_Suite_B_128`` is available, which + will negotiate only the 128-bit security NSA Suite B. See + :rfc:`6460` for more information about Suite B. + +* Adds a new interface for benchmarking, ``time_algorithm_ops``, + which returns a map of operations to operations per second. For + instance now both encrypt and decrypt speed of a block cipher can be + checked, as well as the key schedule of all keyed algorithms. It + additionally supports AEAD modes. + +* Rename ARC4 to RC4 + +Version 1.11.3, 2013-04-11 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add a new interface for AEAD modes (``AEAD_Mode``). + +* Implementations of the OCB and GCM authenticated cipher modes are + now included. + +* Support for TLS GCM ciphersuites is now available. + +* A new TLS policy mechanism + ``TLS::Policy::server_uses_own_ciphersuite_preferences`` + controls how a server chooses a ciphersuite. Previously it always + chose its most preferred cipher out of the client's list, but this + can allow configuring a server to choose by the client's preferences + instead. + +* ``Keyed_Filter`` now supports returning a + ``Key_Length_Specification`` so the full details of what + keylengths are supported is now available in keyed filters. + +* The experimental and rarely used Turing and WiderWAKE stream ciphers + have been removed + +* New functions for symmetric encryption are included in cryptobox.h + though interfaces and formats are subject to change. + +* A new function ``algorithm_kat_detailed`` returns a string + providing information about failures, instead of just a pass/fail + indicator as in ``algorithm_kat``. + +Version 1.10.5, 2013-03-02 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* A potential crash in the AES-NI implementation of the AES-192 key + schedule (caused by misaligned loads) has been fixed. + +* A previously conditional operation in Montgomery multiplication and + squaring is now always performed, removing a possible timing + channel. + +* Use correct flags for creating a shared library on OS X under Clang. + +* Fix a compile time incompatibility with Visual C++ 2012. + +Version 1.11.2, 2013-03-02 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* A bug in the release script caused the ``botan_version.py`` included + in 1.11.1`` to be invalid, which required a manual edit to fix + (Bugzilla 226) + +* Previously ``clear_mem`` was implemented by an inlined call to + ``std::memset``. However an optimizing compiler might notice cases + where the memset could be skipped in cases allowed by the standard. + Now ``clear_mem`` calls ``zero_mem`` which is compiled separately and + which zeros out the array through a volatile pointer. It is possible + some compiler with some optimization setting (especially with + something like LTO) might still skip the writes. It would be nice if + there was an automated way to test this. + +* The new filter ``Threaded_Fork`` acts like a normal + ``Fork``, sending its input to a number of different + filters, but each subchain of filters in the fork runs in its own + thread. Contributed by Joel Low. + +* The default TLS policy formerly preferred AES over RC4, and allowed + 3DES by default. Now the default policy is to negotiate only either + AES or RC4, and to prefer RC4. + +* New TLS ``Blocking_Client`` provides a thread per + connection style API similar to that provided in 1.10 + +* The API of ``Credentials_Manager::trusted_certificate_authorities`` + has changed to return a vector of ``Certificate_Store*`` instead of + ``X509_Certificate``. This allows the list of trusted CAs to be + more easily updated dynamically or loaded lazily. + +* The ``asn1_int.h`` header was split into ``asn1_alt_name.h``, + ``asn1_attribute.h`` and ``asn1_time.h``. + +Version 1.10.4, 2013-01-07 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Avoid a conditional operation in the power mod implementations on if + a nibble of the exponent was zero or not. This may help protect + against certain forms of side channel attacks. + +* The SRP6 code was checking for invalid values as specified in RFC + 5054, specifically values equal to zero mod p. However SRP would + accept negative A/B values, or ones larger than p, neither of which + should occur in a normal run of the protocol. These values are now + rejected. Credits to Timothy Prepscius for pointing out these values + are not normally used and probably signal something fishy. + +* The return value of version_string is now a compile time constant + string, so version information can be more easily extracted from + binaries. + +Version 1.11.1, 2012-10-30 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +Initial support for DTLS (both v1.0 and v1.2) is available in this +release, though it should be considered highly experimental. Currently +timeouts and retransmissions are not handled. + +The ``TLS::Client`` constructor now takes the version to +offer to the server. The policy hook ``TLS::Policy`` function +`pref_version``, which previously controlled this, has been removed. + +`TLS::Session_Manager_In_Memory`` now chooses a random +256-bit key at startup and encrypts all sessions (using the existing +`TLS::Session::encrypt`` mechanism) while they are stored in +memory. This is primarily to reduce pressure on locked memory, as each +session normally requires 48 bytes of locked memory for the master +secret, whereas now only 32 bytes are needed total. This change may +also make it slightly harder for an attacker to extract session data +from memory dumps (eg with a cold boot attack). + +The keys used in TLS session encryption were previously uniquely +determined by the master key. Now the encrypted session blob includes +two 80 bit salts which are used in the derivation of the cipher and +MAC keys. + +The ``secure_renegotiation`` flag is now considered an aspect of the +connection rather than the session, which matches the behavior of +other implementations. As the format has changed, sessions saved to +persistent storage by 1.11.0 will not load in this version and vice +versa. In either case this will not cause any errors, the session will +simply not resume and instead a full handshake will occur. + +New policy hooks ``TLS::Policy::acceptable_protocol_version``, +`TLS::Policy::allow_server_initiated_renegotiation``, and +`TLS::Policy::negotiate_heartbeat_support`` were added. + +TLS clients were not sending a next protocol message during a session +resumption, which would cause resumption failures with servers that +support NPN if NPN was being offered by the client. + +A bug caused heartbeat requests sent by the counterparty during a +handshake to be passed to the application callback as if they were +heartbeat responses. + +Support for TLS key material export as specified in :rfc:`5705` has +been added, available via ``TLS::Channel::key_material_export`` + +A new function ``Public_Key::estimated_strength`` returns +an estimate for the upper bound of the strength of the key. For +instance for an RSA key, it will return an estimate of how many +operations GNFS would take to factor the key. + +A new ``Path_Validation_Result`` code has been added +``SIGNATURE_METHOD_TOO_WEAK``. By default signatures created with keys +below 80 bits of strength (as estimated by ``estimated_strength``) are +rejected. This level can be modified using a parameter to the +``Path_Validation_Restrictions`` constructor. + +The SRP6 code was checking for invalid values as specified in +:rfc:`5054`, ones equal to zero mod p, however it would accept +negative A/B values, or ones larger than p, neither of which should +occur in a normal run of the protocol. These values are now +rejected. Credits to Timothy Prepscius for pointing out these values +are not normally used and probably signal something fishy. + +Several ``BigInt`` functions have been removed, including +``operator[]``, ``assign``, ``get_reg``, and ``grow_reg``. The version +of ``data`` that returns a mutable pointer has been renamed +``mutable_data``. Support for octal conversions has been removed. + +The constructor ``BigInt(NumberType type, size_t n)`` has been +removed, replaced by ``BigInt::power_of_2``. + +In 1.11.0, when compiled by GCC, the AES-NI implementation of AES-192 +would crash if the mlock-based allocator was used due to an alignment +issue. + +Version 1.11.0, 2012-07-19 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +.. note:: + + In this release, many new features of C++11 are being used in the + library. Currently GCC 4.7 and Clang 3.1 are known to work well. + This version of the library cannot be compiled by or used with a + C++98 compiler. + +There have been many changes and improvements to TLS. The interface +is now purely event driven and does not directly interact with +sockets. New TLS features include TLS v1.2 support, client +certificate authentication, renegotiation, session tickets, and +session resumption. Session information can be saved in memory or to +an encrypted SQLite3 database. Newly supported TLS ciphersuite +algorithms include using SHA-2 for message authentication, pre shared +keys and SRP for authentication and key exchange, ECC algorithms for +key exchange and signatures, and anonymous DH/ECDH key exchange. + +Support for OCSP has been added. Currently only client-side support +exists. + +The API for X.509 path validation has changed, with +``x509_path_validate`` in x509path.h now handles path validation and +``Certificate_Store`` handles storage of certificates and CRLs. + +The memory container types have changed substantially. The +``MemoryVector`` and ``SecureVector`` container types have been +removed, and an alias of ``std::vector`` using an allocator that +clears memory named ``secure_vector`` is used for key material, with +plain ``std::vector`` being used for everything else. + +The technique used for mlock'ing memory on Linux and BSD systems is +much improved. Now a single page-aligned block of memory (the exact +limit of what we can mlock) is mmap'ed, with allocations being done +using a best-fit allocator and all metadata held outside the mmap'ed +range, in an effort to make best use of the very limited amount of +memory current Linux kernels allow unpriveledged users to lock. + +A filter using LZMA was contributed by Vojtech Kral. It is available +if LZMA support was enabled at compilation time by passing +``--with-lzma`` to ``configure.py``. + +:rfc:`5915` adds some extended information which can be included in +ECC private keys which the ECC key decoder did not expect, causing an +exception when such a key was loaded. In particular, recent versions +of OpenSSL use these fields. Now these fields are decoded properly, +and if the public key value is included it is used, as otherwise the +public key needs to be rederived from the private key. However the +library does not include these fields on encoding keys for +compatibility with software that does not expect them (including older +versions of botan). + +Version 1.8.14, 2012-07-18 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* The malloc allocator would return null instead of throwing in the + event of an allocation failure, which could cause an application + crash due to null pointer dereference where normally an exception + would occur. + +* Recent versions of OpenSSL include extra information in ECC private + keys, the presence of which caused an exception when such a key was + loaded by botan. The decoding of ECC private keys has been changed to + ignore these fields if they are set. + +* AutoSeeded_RNG has been changed to prefer ``/dev/random`` over + ``/dev/urandom`` + +* Fix detection of s390x (Debian bug 638347) + +Version 1.10.3, 2012-07-10 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +A change in 1.10.2 accidentally broke ABI compatibility with 1.10.1 +and earlier versions, causing programs compiled against 1.10.1 to +crash if linked with 1.10.2 at runtime. + +Recent versions of OpenSSL include extra information in ECC private +keys, the presence of which caused an exception when such a key was +loaded by botan. The decoding of ECC private keys has been changed to +ignore these fields if they are set. + +Version 1.10.2, 2012-06-17 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +Several TLS bugs were fixed in this release, including a major +omission that the renegotiation extension was not being used. As the +1.10 implementation of TLS does not properly support renegotiation, +the approach in this release is simply to send the renegotiation +extension SCSV, which should protect the client against any handshake +splicing. In addition renegotiation attempts are handled properly +instead of causing handshake failures - all hello requests, and all +client hellos after the initial negotiation, are ignored. Some +bugs affecting DSA server authentication were also fixed. + +By popular request, ``Pipe::reset`` no longer requires that message +processing be completed, a requirement that caused problems when a +Filter's end_msg call threw an exception, after which point the Pipe +object was no longer usable. + +Support for getting entropy using the rdrand instruction introduced in +Intel's Ivy Bridge processors has been added. In previous releases, +the ``CPUID::has_rdrand`` function was checking the wrong cpuid bit, +and would false positive on AMD Bulldozer processors. + +An implementation of SRP-6a compatible with the specification in RFC +5054 is now available in ``srp6.h``. In 1.11, this is being used for +TLS-SRP, but may be useful in other environments as well. + +An implementation of the Camellia block cipher was added, again largely +for use in TLS. + +If ``clock_gettime`` is available on the system, hres_timer will poll all +the available clock types. + +AltiVec is now detected on IBM POWER7 processors and on OpenBSD systems. +The OpenBSD support was contributed by Brad Smith. + +The Qt mutex wrapper was broken and would not compile with any recent +version of Qt. Taking this as a clear indication that it is not in use, +it has been removed. + +Avoid setting the soname on OpenBSD, as it doesn't support it (Bugzilla 158) + +A compilation problem in the dynamic loader that prevented using +dyn_load under MinGW GCC has been fixed. + +A common error for people using MinGW is to target GCC on Windows, +however the 'Windows' target assumes the existence of Visual C++ +runtime functions which do not exist in MinGW. Now, configuring for +GCC on Windows will cause the configure.py to warn that likely you +wanted to configure for either MinGW or Cygwin, not the generic +Windows target. + +A bug in configure.py would cause it to interpret ``--cpu=s390x`` as +``s390``. This may have affected other CPUs as well. Now configure.py +searches for an exact match, and only if no exact match is found will +it search for substring matches. + +An incompatibility in configure.py with the subprocess module included +in Python 3.1 has been fixed (Bugzilla 157). + +The exception catching syntax of configure.py has been changed to the +Python 3.x syntax. This syntax also works with Python 2.6 and 2.7, but +not with any earlier Python 2 release. A simple search and replace +will allow running it under Python 2.5:: + + perl -pi -e 's/except (.*) as (.*):/except $1, $2:/g' configure.py + +Note that Python 2.4 is not supported at all. + +Version 1.10.1, 2011-07-11 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* A race condition in ``Algorithm_Factory`` could cause crashes in + multithreaded code. + +* The return value of ``name`` has changed for GOST 28147-89 and + Skein-512. GOST's ``name`` now includes the name of the sbox, and + Skein's includes the personalization string (if nonempty). This + allows an object to be properly roundtripped, which is necessary to + fix the race condition described above. + +* A new distribution script is now included, as + ``src/build-data/scripts/dist.py`` + +* The ``build.h`` header now includes, if available, an identifier of + the source revision that was used. This identifier is also included + in the result of ``version_string``. + +Version 1.8.13, 2011-07-02 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* A race condition in ``Algorithm_Factory`` could cause crashes in + multithreaded code. + +Version 1.10.0, 2011-06-20 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Detection for the rdrand instruction being added to upcoming Intel + Ivy Bridge processors has been added. + +* A template specialization of std::swap was added for the memory + container types. + +Version 1.8.12, 2011-06-20 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +* If EMSA3(Raw) was used for more than one signature, it would produce + incorrect output. + +* Fix the --enable-debug option to configure.py + +* Improve OS detection on Cygwin + +* Fix compilation under Sun Studio 12 on Solaris + +* Fix a memory leak in the constructors of DataSource_Stream and + DataSink_Stream which would occur if opening the file failed (Bugzilla 144) + +Version 1.9.18, 2011-06-03 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fourth release candidate for 1.10.0 + +* The GOST 34.10 verification operation was not ensuring that s and r + were both greater than zero. This could potentially have meant it + would have accepted an invalid all-zero signature as valid for any + message. Due to how ECC points are internally represented it instead + resulted in an exception being thrown. + +* A simple multiexponentation algorithm is now used in ECDSA and + GOST-34.10 signature verification, leading to 20 to 25% improvements + in ECDSA and 25% to 40% improvements in GOST-34.10 verification + performance. + +* The internal representation of elliptic curve points has been + modified to use Montgomery representation exclusively, resulting in + reduced memory usage and a 10 to 20% performance improvement for + ECDSA and ECDH. + +* In OAEP decoding, scan for the delimiter bytes using a loop that is + written without conditionals so as to help avoid timing analysis. + Unfortunately GCC at least is 'smart' enough to compile it to + jumps anyway. + +* The SSE2 implementation of IDEA did not work correctly when compiled + by Clang, because the trick it used to emulate a 16 bit unsigned + compare in SSE (which doesn't contain one natively) relied on signed + overflow working in the 'usual' way. A different method that doesn't + rely on signed overflow is now used. + +* Add support for compiling SSL using Visual C++ 2010's TR1 + implementation. + +* Fix a bug under Visual C++ 2010 which would cause ``hex_encode`` to + crash if given a zero-sized input to encode. + +* A new build option ``--via-amalgamation`` will first generate the + single-file amalgamation, then build the library from that single + file. This option requires a lot of memory and does not parallelize, + but the resulting library is smaller and may be faster. + +* On Unix, the library and header paths have been changed to allow + parallel installation of different versions of the library. Headers + are installed into ``<prefix>/include/botan-1.9/botan``, libraries + are named ``libbotan-1.9``, and ``botan-config`` is now namespaced + (so in this release ``botan-config-1.9``). All of these embedded + versions will be 1.10 in the upcoming stable release. + +* The soname system has been modified. In this release the library + soname is ``libbotan-1.9.so.0``, with the full library being named + ``libbotan-1.9.so.0.18``. The ``0`` is the ABI version, and will be + incremented whenever a breaking ABI change is made. + +* TR1 support is not longer automatically assumed under older versions + of GCC + +* Functions for base64 decoding that work standalone (without needing + to use a pipe) have been added to ``base64.h`` + +* The function ``BigInt::to_u32bit`` was inadvertently removed in 1.9.11 + and has been added back. + +* The function ``BigInt::get_substring`` did not work correctly with a + *length* argument of 32. + +* The implementation of ``FD_ZERO`` on Solaris uses ``memset`` and + assumes the caller included ``string.h`` on its behalf. Do so to + fix compilation in the ``dev_random`` and ``unix_procs`` entropy + sources. Patch from Jeremy C. Reed. + +* Add two different configuration targets for Atom, since some are + 32-bit and some are 64-bit. The 'atom' target now refers to the + 64-bit implementations, use 'atom32' to target the 32-bit + processors. + +* The (incomplete) support for CMS and card verifiable certificates + are disabled by default; add ``--enable-modules=cms`` or + ``--enable-modules=cvc`` during configuration to turn them back on. + +Version 1.9.17, 2011-04-29 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Third release candidate for 1.10.0 + +* The format preserving encryption method currently available was + presented in the header ``fpe.h`` and the functions ``fpe_encrypt`` + and ``fpe_decrypt``. These were renamed as it is likely that other + FPE schemes will be included in the future. The header is now + ``fpe_fe1.h``, and the functions are named ``fe1_encrypt`` and + ``fe1_decrypt``. + +* New options to ``configure.py`` control what tools are used for + documentation generation. The ``--with-sphinx`` option enables using + Sphinx to convert ReST into HTML; otherwise the ReST sources are + installed directly. If ``--with-doxygen`` is used, Doxygen will run + as well. Documentation generation can be triggered via the ``docs`` + target in the makefile; it will also be installed by the install + target on Unix. + +* A bug in 1.9.16 effectively disabled support for runtime CPU feature + detection on x86 under GCC in that release. + +* A mostly internal change, all references to "ia32" and "amd64" have + been changed to the vendor neutral and probably easier to understand + "x86-32" and "x86-64". For instance, the "mp_amd64" module has been + renamed "mp_x86_64", and the macro indicating x86-32 has changed + from ``BOTAN_TARGET_ARCH_IS_IA32`` to + ``BOTAN_TARGET_ARCH_IS_X86_32``. The classes calling assembly have + also been renamed. + +* Similiarly to the above change, the AES implemenations using the + AES-NI instruction set have been renamed from AES_XXX_Intel to + AES_XXX_NI. + +* Systems that are identified as ``sun4u`` will default to compiling for + 32-bit SPARCv9 code rather than 64-bit. This matches the still + common convention for 32-bit SPARC userspaces. If you want 64-bit + code on such as system, use ``--cpu=sparc64``. + +* Some minor fixes for compiling botan under the BeOS + clone/continuation `Haiku <http://haiku-os.org>`_. + +* Further updates to the documentation + +Version 1.9.16, 2011-04-11 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Second release candidate for 1.10.0 + +* The documentation, previously written in LaTeX, is now in + reStructuredText suitable for processing by `Sphinx + <http://sphinx.pocoo.org>`_, which can generate nicely formatted + HTML and PDFs. The documentation has also been greatly updated and + expanded. + +* The class ``EC_Domain_Params`` has been renamed ``EC_Group``, with a + typedef for backwards compatibility. + +* The ``EC_Group`` string constructor didn't understand the standard + names like "secp160r1", forcing use of the OIDs. + +* Two constructors for ECDSA private keys, the one that creates a new + random key, and the one that provides a preset private key as a + ``BigInt``, have been merged. This matches the existing interface + for DSA and DH keys. If you previously used the version taking a + ``BigInt`` private key, you'll have to additionally pass in a + ``RandomNumberGenerator`` object starting in this release. + +* It is now possible to create ECDH keys with a preset ``BigInt`` + private key; previously no method for this was available. + +* The overload of ``generate_passhash9`` that takes an explicit + algorithm identifier has been merged with the one that does not. + The algorithm identifier code has been moved from the second + parameter to the fourth. + +* Change shared library versioning to match the normal Unix + conventions. Instead of ``libbotan-X.Y.Z.so``, the shared lib is + named ``libbotan-X.Y.so.Z``; this allows the runtime linker to do + its runtime linky magic. It can be safely presumed that any change + in the major or minor version indicates ABI incompatibility. + +* Remove the socket wrapper code; it was not actually used by anything + in the library, only in the examples, and you can use whatever kind + of (blocking) socket interface you like with the SSL/TLS code. It's + available as socket.h in the examples directory if you want to use + it. + +* Disable the by-default 'strong' checking of private keys that are + loaded from storage. You can always request key material sanity + checking using Private_Key::check_key. + +* Bring back removed functions ``min_keylength_of``, + ``max_keylength_of``, ``keylength_multiple_of`` in ``lookup.h`` to + avoid breaking applications written against 1.8 + +Version 1.9.15, 2011-03-21 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* First release candidate for 1.10.0 + +* Modify how message expansion is done in SHA-256 and SHA-512. + Instead of expanding the entire message at the start, compute them + in the minimum number of registers. Values are computed 15 rounds + before they are needed. On a Core i7-860, GCC 4.5.2, went from 143 + to 157 MiB/s in SHA-256, and 211 to 256 MiB/s in SHA-512. + +* Pipe will delete empty output queues as soon as they are no longer + needed, even if earlier messages still have data unread. However an + (empty) entry in a deque of pointers will remain until all prior + messages are completely emptied. + +* Avoid reading the SPARC ``%tick`` register on OpenBSD as unlike the + Linux and NetBSD kernels, it will not trap and emulate it for us, + causing a illegal instruction crash. + +* Improve detection and autoconfiguration for ARM processors. Thanks + go out to the the `Tahoe-LAFS Software Foundation + <http://tahoe-lafs.org>`_, who donated a Sheevaplug that I'll be + using to figure out how to make the cryptographic primitives + Tahoe-LAFS relies on faster, particularly targeting the ARMv5TE. + +Version 1.9.14, 2011-03-01 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add support for bcrypt, OpenBSD's password hashing scheme. + +* Add support for NIST's AES key wrapping algorithm, as described in + :rfc:`3394`. It is available by including ``rfc3394.h``. + +* Fix an infinite loop in zlib filters introduced in 1.9.11 (Bugzilla 142) + +Version 1.9.13, 2011-02-19 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +GOST 34.10 signatures were being formatted in a way that was not +compatible with other implemenations, and specifically how GOST is +used in DNSSEC. + +The Keccak hash function was updated to the tweaked variant proposed +for round 3 of the NIST hash competition. This version is not +compatible with the previous algorithm. + +A new option ``--distribution-info`` was added to the configure +script. It allows the user building the library to set any +distribution-specific notes on the build, which are available as a +macro ``BOTAN_DISTRIBUTION_INFO``. The default value is +'unspecified'. If you are building an unmodified version of botan +(especially for distribution), and want to indicate to applications +that this is the case, consider using +``--distribution-info=pristine``. If you are making any patches or +modifications, it is recommended to use +``--distribution-info=[Distribution Name] [Version]``, for instance +'FooNix 1.9.13-r3'. + +Some bugs preventing compilation under Clang 2.9 and Sun Studio 12 +were fixed. + +The DER/BER codecs use ``size_t`` instead of ``u32bit`` for small +integers + +Version 1.9.12, 2010-12-13 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add the Keccak hash function +* Fix compilation problems in Python wrappers +* Fix compilation problem in OpenSSL engine +* Update SQLite3 database encryption codec + +Version 1.9.11, 2010-11-29 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* The TLS API has changed substantially and now relies heavily on + TR1's ``std::function`` is now required. Additionally, it is + required that all callers derive a subclass of TLS_Policy and pass + it to a client or server object. Please remember that the TLS + interface/API is currently unstable and will very likely change + further before TLS is included in a stable release. A handshake + failure that occurred when RC4 was negotiated has also been fixed. + +* Some possible timing channels in the implementations of Montgomery + reduction and the IDEA key schedule were removed. The table-based + AES implementation uses smaller tables in the first round to help + make some timing/cache attacks harder. + +* The library now uses size_t instead of u32bit to represent + lengths. Also the interfaces for the memory containers have changed + substantially to better match STL container interfaces; + MemoryRegion::append, MemoryRegion::destroy, and MemoryRegion::set + were all removed, and several other functions, like clear and + resize, have changed meaning. + +* Update Skein-512 to match the v1.3 specification +* Fix a number of CRL encoding and decoding bugs +* Counter mode now always encrypts 256 blocks in parallel +* Use small tables in the first round of AES +* Removed AES class: app must choose AES-128, AES-192, or AES-256 +* Add hex encoding/decoding functions that can be used without a Pipe +* Add base64 encoding functions that can be used without a Pipe +* Add to_string function to X509_Certificate +* Add support for dynamic engine loading on Windows +* Replace BlockCipher::BLOCK_SIZE attribute with function block_size() +* Replace HashFunction::HASH_BLOCK_SIZE attribute with hash_block_size() +* Move PBKDF lookup to engine system +* The IDEA key schedule has been changed to run in constant time +* Add Algorithm and Key_Length_Specification classes +* Switch default PKCS #8 encryption algorithm from AES-128 to AES-256 +* Allow using PBKDF2 with empty passphrases +* Add compile-time deprecation warnings for GCC, Clang, and MSVC +* Support use of HMAC(SHA-256) and CMAC(Blowfish) in passhash9 +* Improve support for Intel Atom processors +* Fix compilation problems under Sun Studio and Clang + +Version 1.8.11, 2010-11-02 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fix a number of CRL encoding and decoding bugs +* When building a debug library under VC++, use the debug runtime +* Fix compilation under Sun Studio on Linux and Solaris +* Add several functions for compatibility with 1.9 +* In the examples, read most input files as binary +* The Perl build script has been removed in this release + +Version 1.8.10, 2010-08-31 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Switch default PKCS #8 encryption algorithm from 3DES to AES-256 +* Increase default hash iterations from 2048 to 10000 in PBES1 and PBES2 +* Use small tables in the first round of AES +* Add PBKDF typedef and get_pbkdf for better compatibility with 1.9 +* Add version of S2K::derive_key taking salt and iteration count +* Enable the /proc-walking entropy source on NetBSD +* Fix the doxygen makefile target + +Version 1.9.10, 2010-08-12 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add a constant-time AES implementation using SSSE3. This code is + based on public domain assembly written by `Mike Hamburg + <http://crypto.stanford.edu/vpaes/>`_, and described in his CHES + 2009 paper "Accelerating AES with Vector Permute Instructions". In + addition to being constant time, it is also significantly faster + than the table-based implementation on some processors. The current + code has been tested with GCC 4.5, Visual C++ 2008, and Clang 2.8. + +* Support for dynamically loading Engine objects at runtime was also + added. Currently only system that use ``dlopen``-style dynamic + linking are supported. + +* On GCC 4.3 and later, use the byteswap intrinsic functions. + +* Drop support for building with Python 2.4 + +* Fix benchmarking of block ciphers in ECB mode + +* Consolidate the two x86 assembly engines + +* Rename S2K to PBKDF + +Version 1.9.9, 2010-06-28 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +A new pure virtual function has been added to ``Filter``, ``name`` +which simply returns some useful identifier for the object. Any +out-of-tree ``Filter`` implementations will need to be updated. + +Add ``Keyed_Filter::valid_iv_length`` which makes it possible to query +as to what IV length(s) a particular filter allows. Previously, +partially because there was no such query mechanism, if a filter did +not support IVs at all, then calls to ``set_iv`` would be silently +ignored. Now an exception about the invalid IV length will be thrown. + +The default iteration count for the password based encryption schemes +has been increased from 2048 to 10000. This should make +password-guessing attacks against private keys encrypted with versions +after this release somewhat harder. + +New functions for encoding public and private keys to binary, +``X509::BER_encode`` and ``PKCS8::BER_encode`` have been added. + +Problems compiling under Apple's version of GCC 4.2.1 and on 64-bit +MIPS systems using GCC 4.4 or later were fixed. + +The coverage of Doxygen documentation comments has significantly +improved in this release. + +Version 1.8.9, 2010-06-16 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Use constant time multiplication in IDEA + +* Avoid possible timing attack against OAEP decoding + +* Add new X509::BER_encode and PKCS8::BER_encode + +* Enable DLL builds under Windows + +* Add Win32 installer support + +* Add support for the Clang compiler + +* Fix problem in semcem.h preventing build under Clang or GCC 3.4 + +* Fix bug that prevented creation of DSA groups under 1024 bits + +* Fix crash in GMP_Engine if library is shutdown and reinitialized and + a PK algorithm was used after the second init + +* Work around problem with recent binutils in x86-64 SHA-1 + +* The Perl build script is no longer supported and refuses to run by + default. If you really want to use it, pass + ``--i-know-this-is-broken`` to the script. + +Version 1.9.8, 2010-06-14 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add support for wide multiplications on 64-bit Windows +* Use constant time multiplication in IDEA +* Avoid possible timing attack against OAEP decoding +* Removed FORK-256; rarely used and it has been broken +* Rename ``--use-boost-python`` to ``--with-boost-python`` +* Skip building shared libraries on MinGW/Cygwin +* Fix creation of 512 and 768 bit DL groups using the DSA kosherizer +* Fix compilation on GCC versions before 4.3 (missing cpuid.h) +* Fix compilation under the Clang compiler + +Version 1.9.7, 2010-04-27 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* TLS: Support reading SSLv2 client hellos +* TLS: Add support for SEED ciphersuites (RFC 4162) +* Add Comb4P hash combiner function + +* Fix checking of EMSA_Raw signatures with leading 0 bytes, valid + signatures could be rejected in certain scenarios. + +Version 1.9.6, 2010-04-09 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* TLS: Add support for TLS v1.1 +* TLS: Support server name indicator extension +* TLS: Fix server handshake +* TLS: Fix server using DSA certificates +* TLS: Avoid timing channel between CBC padding check and MAC verification + +Version 1.9.5, 2010-03-29 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Numerous ECC optimizations +* Fix GOST 34.10-2001 X.509 key loading +* Allow PK_Signer's fault protection checks to be toggled off +* Avoid using pool-based locking allocator if we can't mlock +* Remove all runtime options +* New BER_Decoder::{decode_and_check, decode_octet_string_bigint} +* Remove SecureBuffer in favor of SecureVector length parameter +* HMAC_RNG: Perform a poll along with user-supplied entropy +* Fix crash in MemoryRegion if Allocator::get failed +* Fix small compilation problem on FreeBSD + +Version 1.9.4, 2010-03-09 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add the Ajisai SSLv3/TLSv1.0 implementation + +* Add GOST 34.10-2001 public key signature scheme +* Add SIMD implementation of Noekeon + +* Add SSE2 implementation of IDEA + +* Extend Salsa20 to support longer IVs (XSalsa20) + +* Perform XTS encryption and decryption in parallel where possible + +* Perform CBC decryption in parallel where possible + +* Add SQLite3 db encryption codec, contributed by Olivier de Gaalon + +* Add a block cipher cascade construction + +* Add support for password hashing for authentication (passhash9.h) + +* Add support for Win32 high resolution system timers + +* Major refactoring and API changes in the public key code + +* PK_Signer class now verifies all signatures before releasing them to + the caller; this should help prevent a wide variety of fault + attacks, though it does have the downside of hurting signature + performance, particularly for DSA/ECDSA. + +* Changed S2K interface: derive_key now takes salt, iteration count + +* Remove dependency on TR1 shared_ptr in ECC and CVC code + +* Renamed ECKAEG to its more usual name, ECDH + +* Fix crash in GMP_Engine if library is shutdown and reinitialized + +* Fix an invalid memory read in MD4 + +* Fix Visual C++ static builds + +* Remove Timer class entirely + +* Switch default PKCS #8 encryption algorithm from 3DES to AES-128 + +* New configuration option, ``--gen-amalgamation``, creates a pair of + files (``botan_all.cpp`` and ``botan_all.h``) which contain the + contents of the library as it would have normally been compiled + based on the set configuration. + +* Many headers are now explicitly internal-use-only and are not installed + +* Greatly improve the Win32 installer + +* Several fixes for Visual C++ debug builds + +Version 1.9.3, 2009-11-19 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add new AES implementation using Intel's AES instruction intrinsics +* Add an implementation of format preserving encryption +* Allow use of any hash function in X.509 certificate creation +* Optimizations for MARS, Skipjack, and AES +* Set macros for available SIMD instructions in build.h +* Add support for using InnoSetup to package Windows builds +* By default build a DLL on Windows + +Version 1.8.8, 2009-11-03 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Alter Skein-512 to match the tweaked 1.2 specification +* Fix use of inline asm for access to x86 bswap function +* Allow building the library without AES enabled +* Add 'powerpc64' alias to ppc64 arch for Gentoo ebuild + +Version 1.9.2, 2009-11-03 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add SIMD version of XTEA +* Support both SSE2 and AltiVec SIMD for Serpent and XTEA +* Optimizations for SHA-1 and SHA-2 +* Add AltiVec runtime detection +* Fix x86 CPU identification with Intel C++ and Visual C++ + +Version 1.9.1, 2009-10-23 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Better support for Python and Perl wrappers +* Add an implementation of Blue Midnight Wish (Round 2 tweak version) +* Modify Skein-512 to match the tweaked 1.2 specification +* Add threshold secret sharing (draft-mcgrew-tss-02) +* Add runtime cpu feature detection for x86/x86-64 +* Add code for general runtime self testing for hashes, MACs, and ciphers +* Optimize XTEA; twice as fast as before on Core2 and Opteron +* Convert CTR_BE and OFB from filters to stream ciphers +* New parsing code for SCAN algorithm names +* Enable SSE2 optimizations under Visual C++ +* Remove all use of C++ exception specifications +* Add support for GNU/Hurd and Clang/LLVM + +Version 1.8.7, 2009-09-09 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fix processing multiple messages in XTS mode +* Add --no-autoload option to configure.py, for minimized builds + +Version 1.9.0, 2009-09-09 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add support for parallel invocation of block ciphers where possible +* Add SSE2 implementation of Serpent +* Add Rivest's package transform (an all or nothing transform) +* Minor speedups to the Turing key schedule +* Fix processing multiple messages in XTS mode +* Add --no-autoload option to configure.py, for minimized builds +* The previously used configure.pl script is no longer supported + +Version 1.8.6, 2009-08-13 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add Cryptobox, a set of simple password-based encryption routines +* Only read world-readable files when walking /proc for entropy +* Fix building with TR1 disabled +* Fix x86 bswap support for Visual C++ +* Fixes for compilation under Sun C++ +* Add support for Dragonfly BSD (contributed by Patrick Georgi) +* Add support for the Open64 C++ compiler +* Build fixes for MIPS systems running Linux +* Minor changes to license, now equivalent to the FreeBSD/NetBSD license + +Version 1.8.5, 2009-07-23 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Change configure.py to work on stock Python 2.4 +* Avoid a crash in Skein_512::add_data processing a zero-length input +* Small build fixes for SPARC, ARM, and HP-PA processors +* The test suite now returns an error code from main() if any tests failed + +Version 1.8.4, 2009-07-12 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fix a bug in nonce generation in the Miller-Rabin test + +Version 1.8.3, 2009-07-11 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add a new Python configuration script +* Add the Skein-512 SHA-3 candidate hash function +* Add the XTS block cipher mode from IEEE P1619 +* Fix random_prime when generating a prime of less than 7 bits +* Improve handling of low-entropy situations during PRNG seeding +* Change random device polling to prefer /dev/urandom over /dev/random +* Use an input insensitive implementation of same_mem instead of memcmp +* Correct DataSource::discard_next to return the number of discarded bytes +* Provide a default value for AutoSeeded_RNG::reseed +* Fix Gentoo bug 272242 + +Version 1.8.2, 2009-04-07 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Make entropy polling more flexible and in most cases faster +* GOST 28147 now supports multiple sbox parameters +* Added the GOST 34.11 hash function +* Fix botan-config problems on MacOS X + +Version 1.8.1, 2009-01-20 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Avoid a valgrind warning in es_unix.cpp on 32-bit Linux +* Fix memory leak in PKCS8 load_key and encrypt_key +* Relicense api.tex from CC-By-SA 2.5 to BSD +* Fix botan-config on MacOS X, Solaris + +Version 1.8.0, 2008-12-08 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fix compilation on Solaris with GCC + +Version 1.7.24, 2008-12-01 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fix a compatibility problem with SHA-512/EMSA3 signature padding +* Fix bug preventing EGD/PRNGD entropy poller from working +* Fix integer overflow in Pooling_Allocator::get_more_core (bug id #27) +* Add EMSA3_Raw, a variant of EMSA3 called CKM_RSA_PKCS in PKCS #11 +* Add support for SHA-224 in EMSA2 and EMSA3 PK signature padding schemes +* Add many more test vectors for RSA with EMSA2, EMSA3, and EMSA4 +* Wrap private structs in SSE2 SHA-1 code in anonymous namespace +* Change configure.pl's CPU autodetection output to be more consistent +* Disable using OpenSSL's AES due to crashes of unknown cause +* Fix warning in /proc walking entropy poller +* Fix compilation with IBM XLC for Cell 0.9-200709 + +Version 1.7.23, 2008-11-23 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Change to use TR1 (thus enabling ECDSA) with GCC and ICC +* Optimize almost all hash functions, especially MD4 and Tiger +* Add configure.pl options --{with,without}-{bzip2,zlib,openssl,gnump} +* Change Timer to be pure virtual, and add ANSI_Clock_Timer +* Cache socket descriptors in the EGD entropy source +* Avoid bogging down startup in /proc walking entropy source +* Remove Buffered_EntropySource helper class +* Add a Default_Benchmark_Timer typedef in benchmark.h +* Add examples using benchmark.h and Algorithm_Factory +* Add ECC tests from InSiTo +* Minor documentation updates + +Version 1.7.22, 2008-11-17 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add provider preferences to Algorithm_Factory +* Fix memory leaks in PBE_PKCS5v20 and get_pbe introduced in 1.7.21 +* Optimize AES encryption and decryption (about 10% faster) +* Enable SSE2 optimized SHA-1 implementation on Intel Prescott CPUs +* Fix nanoseconds overflow in benchmark code +* Remove Engine::add_engine + +Version 1.7.21, 2008-11-11 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Make algorithm lookup much more configuable +* Add facilities for runtime performance testing of algorithms +* Drop use of entropy estimation in the PRNGs +* Increase intervals between HMAC_RNG automatic reseeding +* Drop InitializerOptions class, all options but thread safety + +Version 1.7.20, 2008-11-09 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Namespace pkg-config file by major and minor versions +* Cache device descriptors in Device_EntropySource +* Split base.h into {block_cipher,stream_cipher,mac,hash}.h +* Removed get_mgf function from lookup.h + +Version 1.7.19, 2008-11-06 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add HMAC_RNG, based on a design by Hugo Krawczyk +* Optimized the Turing stream cipher (about 20% faster on x86-64) +* Modify Randpool's reseeding algorithm to poll more sources +* Add a new AutoSeeded_RNG in auto_rng.h +* OpenPGP_S2K changed to take hash object instead of name +* Add automatic identification for Intel's Prescott processors + +Version 1.7.18, 2008-10-22 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add Doxygen comments from InSiTo +* Add ECDSA and ECKAEG benchmarks +* Add configure.pl switch --with-tr1-implementation +* Fix configure.pl's --with-endian and --with-unaligned-mem options +* Added support for pkg-config +* Optimize byteswap with x86 inline asm for Visual C++ by Yves Jerschow +* Use const references to avoid copying overhead in CurveGFp, GFpModulus + +Version 1.7.17, 2008-10-12 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add missing ECDSA object identifiers +* Fix error in x86 and x86-64 assembler affecting GF(p) math +* Remove Boost dependency from GF(p) math +* Modify botan-config to not print -L/usr/lib or -L/usr/local/lib +* Add BOTAN_DLL macro to over 30 classes missing it +* Rename the two SHA-2 base classes for consistency + +Version 1.7.16, 2008-10-09 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add several missing pieces needed for ECDSA and ECKAEG +* Add Card Verifiable Certificates from InSiTo +* Add SHA-224 from InSiTo +* Add BSI variant of EMSA1 from InSiTo +* Add GF(p) and ECDSA tests from InSiTo +* Split ECDSA and ECKAEG into distinct modules +* Allow OpenSSL and GNU MP engines to be built with public key algos disabled +* Rename sha256.h to sha2_32.h and sha_64.h to sha2_64.h + +Version 1.7.15, 2008-10-07 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add GF(p) arithmetic from InSiTo +* Add ECDSA and ECKAEG implementations from InSiTo +* Minimize internal dependencies, allowing for smaller build configurations +* Add new User Manual and Architecture Guide from FlexSecure GmbH +* Alter configure.pl options for better autotools compatibility +* Update build instructions for recent changes to configure.pl +* Fix CPU detection using /proc/cpuinfo + +Version 1.7.14, 2008-09-30 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Split library into parts allowing modular builds +* Add (very preliminary) CMS support to the main library +* Some constructors now require object pointers instead of names +* Support multiple implementations of the same algorithm +* Build support for Pentium-M processors, from Derek Scherger +* Build support for MinGW/MSYS, from Zbigniew Zagorski +* Use inline assembly for bswap on 32-bit x86 + +Version 1.7.13, 2008-09-27 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add SSLv3 MAC, SSLv3 PRF, and TLS v1.0 PRF from Ajisai +* Allow all examples to compile even if compression not enabled +* Make CMAC's polynomial doubling operation a public class method +* Use the -m64 flag when compiling with Sun Forte on x86-64 +* Clean up and slightly optimize CMAC::final_result + +Version 1.7.12, 2008-09-18 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add x86 assembly for Visual Studio C++, by Luca Piccarreta +* Add a Perl XS module, by Vaclav Ovsik +* Add SWIG-based wrapper for Botan +* Add SSE2 implementation of SHA-1, by Dean Gaudet +* Remove the BigInt::sig_words cache due to bugs +* Combined the 4 Blowfish sboxes, suggested by Yves Jerschow +* Changed BigInt::grow_by and BigInt::grow_to to be non-const +* Add private assignment operators to classes that don't support assignment +* Benchmark RSA encryption and signatures +* Added test programs for random_prime and ressol +* Add high resolution timers for IA-64, HP-PA, S390x +* Reduce use of the RNG during benchmarks +* Fix builds on STI Cell PPU +* Add support for IBM's XLC compiler +* Add IETF 8192 bit MODP group + +Version 1.7.11, 2008-09-11 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added the Salsa20 stream cipher +* Optimized Montgomery reduction, Karatsuba squaring +* Added 16x16->32 word Comba multiplication and squaring +* Use a much larger Karatsuba cutoff point +* Remove bigint_mul_add_words +* Inlined several BigInt functions +* Add useful information to the generated build.h +* Rename alg_{ia32,amd64} modules to asm_{ia32,amd64} +* Fix the Windows build + +Version 1.7.10, 2008-09-05 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Public key benchmarks run using a selection of random keys +* New benchmark timer options are clock_gettime, gettimeofday, times, clock +* Including reinterpret_cast optimization for xor_buf in default header +* Split byte swapping and word rotation functions into distinct headers +* Add IETF modp 6144 group and 2048 and 3072 bit DSS groups +* Optimizes BigInt right shift +* Add aliases in DL_Group::Format enum +* BigInt now caches the significant word count + +Version 1.6.5, 2008-08-27 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add noexec stack marker for GNU linker in assembly code +* Fix autoconfiguration problem on x86 with GCC 4.2 and 4.3 + +Version 1.7.9, 2008-08-27 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Make clear() in most algorithm base classes a pure virtual +* Add noexec stack marker for GNU linker in assembly code +* Avoid string operations in ressol +* Compilation fixes for MinGW and Visual Studio C++ 2008 +* Some autoconfiguration fixes for Windows + +Version 1.7.8, 2008-07-15 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added the block cipher Noekeon +* Remove global deref_alias function +* X509_Store takes timeout options as constructor arguments +* Add Shanks-Tonelli algorithm, contributed by FlexSecure GmbH +* Extend random_prime() for generating primes of any bit length +* Remove Config class +* Allow adding new entropy via base RNG interface +* Reseeding a X9.31 PRNG also reseeds the underlying PRNG + +Version 1.7.7, 2008-06-28 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Remove the global PRNG object +* The PK filter objects were removed +* Add a test suite for the ANSI X9.31 PRNG +* Much cleaner and (mostly) thread-safe reimplementation of es_ftw +* Remove both default arguments to ANSI_X931_RNG's constructor +* Remove the randomizing version of OctetString::change +* Make the cipher and MAC to use in Randpool configurable +* Move RandomNumberGenerator declaration to rng.h +* RSA_PrivateKey will not generate keys smaller than 1024 bits +* Fix an error decoding BER UNIVERSAL types with special taggings + +Version 1.7.6, 2008-05-05 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Initial support for Windows DLLs, from Joel Low +* Reset the position pointer when a new block is generated in X9.32 PRNG +* Timer objects are now treated as entropy sources +* Moved several ASN.1-related enums from enums.h to an appropriate header +* Removed the AEP module, due to inability to test +* Removed Global_RNG and rng.h +* Removed system_clock +* Removed Library_State::UI and the pulse callback logic + +Version 1.7.5, 2008-04-12 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* The API of X509_CA::sign_request was altered to avoid race conditions +* New type Pipe::message_id to represent the Pipe message number +* Remove the Named_Mutex_Holder for a small performance gain +* Removed several unused or rarely used functions from Config +* Ignore spaces inside of a decimal string in BigInt::decode +* Allow using a std::istream to initialize a DataSource_Stream object +* Fix compilation problem in zlib compression module +* The chunk sized used by Pooling_Allocator is now a compile time setting +* The size of random blinding factors is now a compile time setting +* The install target no longer tries to set a particular owner/group + +Version 1.7.4, 2008-03-10 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Use unaligned memory read/writes on systems that allow it, for performance +* Assembly for x86-64 for accessing the bswap instruction +* Use larger buffers in ARC4 and WiderWAKE for significant throughput increase +* Unroll loops in SHA-160 for a few percent increase in performance +* Fix compilation with GCC 3.2 in es_ftw and es_unix +* Build fix for NetBSD systems +* Prevent es_dev from being built except on Unix systems + +Version 1.6.4, 2008-03-08 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fix a compilation problem with Visual Studio C++ 2003 + +Version 1.7.3, 2008-01-23 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* New invocation syntax for configure.pl with several new options +* Support for IPv4 addresses in a subject alternative name +* New fast poll for the generic Unix entropy source (es_unix) +* The es_file entropy source has been replaced by the es_dev module +* The malloc allocator does not inherit from Pooling_Allocator anymore +* The path that es_unix will search in are now fully user-configurable +* Truncate X9.42 PRF output rather than allow counter overflow +* PowerPC is now assumed to be big-endian + +Version 1.7.2, 2007-10-13 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Initialize the global library state lazily +* Add plain CBC-MAC for backwards compatibility with old systems +* Clean up some of the self test code +* Throw a sensible exception if a DL_Group is not found +* Truncate KDF2 output rather than allowing counter overflow +* Add newly assigned OIDs for SHA-2 and DSA with SHA-224/256 +* Fix a Visual Studio compilation problem in x509stat.cpp + +Version 1.6.3, 2007-07-23 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fix a race condition in the algorithm lookup cache +* Fix problems building the memory pool on some versions of Visual C++ + +Version 1.7.1, 2007-07-23 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fix a race condition in the algorithm object cache +* HMAC key schedule optimization +* The build header sets a macro defining endianness, if known +* New word load/store abstraction allowing further optimization +* Modify most of the library to avoid use the C-style casts +* Use higher resolution timers in symmetric benchmarks + +Version 1.7.0, 2007-05-19 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* DSA parameter generation now follows FIPS 186-3 +* Added OIDs for Rabin-Williams and Nyberg-Rueppel +* Somewhat better support for out of tree builds +* Minor optimizations for RC2 and Tiger +* Documentation updates +* Update the todo list + +Version 1.6.2, 2007-03-24 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fix autodection on Athlon64s running Linux +* Fix builds on QNX and compilers using STLport +* Remove a call to abort() that crept into production + +Version 1.6.1, 2007-01-20 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fix some base64 decoder bugs +* Add a new option to base64 encoding, to always append a newline +* Fix some build problems under Visual Studio with debug enabled +* Fix a bug in BER_Decoder that was triggered under some compilers + +Version 1.6.0, 2006-12-17 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Minor cleanups versus 1.5.13 + +Version 1.5.13, 2006-12-10 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Compilation fixes for the bzip2, zlib, and GNU MP modules +* Better support for Intel C++ and EKOpath C++ on x86-64 + +Version 1.5.12, 2006-10-27 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Cleanups in the initialization routines +* Add some x86-64 assembly for multiply-add +* Fix problems generating very small (below 384 bit) RSA keys +* Support out of tree builds +* Bring some of the documentation up to date +* More improvements to the Python bindings + +Version 1.5.11, 2006-09-10 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Removed the Algorithm base class +* Various cleanups in the public key inheritance hierarchy +* Major overhaul of the configure/build setup +* Added x86 assembler implementations of Serpent and low-level MPI code +* Optimizations for the SHA-1 x86 assembler +* Various improvements to the Python wrappers +* Work around a Visual Studio compiler bug + +Version 1.5.10, 2006-08-13 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add x86 assembler versions of MD4, MD5, and SHA-1 +* Expand InitializerOptions' language to support on/off switches +* Fix definition of OID 2.5.4.8; was accidentally changed in 1.5.9 +* Fix possible resource leaks in the mmap allocator +* Slightly optimized buffering in MDx_HashFunction +* Initialization failures are dealt with somewhat better +* Add an example implementing Pollard's Rho algorithm +* Better option handling in the test/benchmark tool +* Expand the xor_ciph example to support longer keys +* Some updates to the documentation + +Version 1.5.9, 2006-07-12 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed bitrot in the AEP engine +* Fix support for marking certificate/CRL extensions as critical +* Significant cleanups in the library state / initialization code +* LibraryInitializer takes an explicit InitializerOptions object +* Make Mutex_Factory an abstract class, add Default_Mutex_Factory +* Change configuration access to using global_state() +* Add support for global named mutexes throughout the library +* Add some STL wrappers for the delete operator +* Change how certificates are created to be more flexible and general + +Version 1.5.8, 2006-06-23 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Many internal cleanups to the X.509 cert/CRL code +* Allow for application code to support new X.509 extensions +* Change the return type of X509_Certificate::{subject,issuer}_info +* Allow for alternate character set handling mechanisms +* Fix a bug that was slowing squaring performance somewhat +* Fix a very hard to hit overflow bug in the C version of word3_muladd +* Minor cleanups to the assembler modules +* Disable es_unix module on FreeBSD due to build problem on FreeBSD 6.1 +* Support for GCC 2.95.x has been dropped in this release + +Version 1.5.7, 2006-05-28 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Further, major changes to the BER/DER coding system +* Updated the Qt mutex module to use Mutex_Factory +* Moved the library global state object into an anonymous namespace +* Drop the Visual C++ x86 assembly module due to bugs + +Version 1.5.6, 2006-03-01 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* The low-level DER/BER coding system was redesigned and rewritten +* Portions of the certificate code were cleaned up internally +* Use macros to substantially clean up the GCC assembly code +* Added 32-bit x86 assembly for Visual C++ (by Luca Piccarreta) +* Avoid a couple of spurious warnings under Visual C++ +* Some slight cleanups in X509_PublicKey::key_id + +Version 1.5.5, 2006-02-04 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed a potential infinite loop in the memory pool code (Matt Johnston) +* Made Pooling_Allocator::Memory_Block an actual class of sorts +* Some small optimizations to the division and modulo computations +* Cleaned up the implementation of some of the BigInt operators +* Reduced use of dynamic memory allocation in low-level BigInt functions +* A few simplifications in the Randpool mixing function +* Removed power(), as it was not particularly useful (or fast) +* Fixed some annoying bugs in the benchmark code +* Added a real credits file + +Version 1.5.4, 2006-01-29 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Integrated x86 and amd64 assembly code, contributed by Luca Piccarreta +* Fixed a memory access off-by-one in the Karatsuba code +* Changed Pooling_Allocator's free list search to a log(N) algorithm +* Merged ModularReducer with its only subclass, Barrett_Reducer +* Fixed sign-handling bugs in some of the division and modulo code +* Renamed the module description files to modinfo.txt +* Further cleanups in the initialization code +* Removed BigInt::add and BigInt::sub +* Merged all the division-related functions into just divide() +* Modified the <mp_asmi.h> functions to allow for better optimizations +* Made the number of bits polled from an EntropySource user configurable +* Avoid including <algorithm> in <botan/secmem.h> +* Fixed some build problems with Sun Forte +* Removed some dead code from bigint_modop +* Fix the definition of same_mem + +Version 1.5.3, 2006-01-24 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Many optimizations in the low-level multiple precision integer code +* Added hooks for assembly implementations of the MPI code +* Support for the X.509 issuer alternative name extension in new certs +* Fixed a bug in the decompression modules; found and patched by Matt Johnston +* New Windows mutex module (mux_win32), by Luca Piccarreta +* Changed the Windows timer module to use QueryPerformanceCounter +* mem_pool.cpp was using std::set iterators instead of std::multiset ones +* Fixed a bug in X509_CA preventing users from disabling particular extensions +* Fixed the mp_asm64 module, which was entirely broken in 1.5.2 +* Fixed some module build problems on FreeBSD and Tru64 + +Version 1.4.12, 2006-01-15 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed an off-by-one memory read in MISTY1::key() +* Fixed a nasty memory leak in Output_Buffers::retire() +* Changed maximum HMAC keylength to 1024 bits +* Fixed a build problem in the hardware timer module on 64-bit PowerPC + +Version 1.5.2, 2006-01-15 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed an off-by-one memory read in MISTY1::key() +* Fixed a nasty memory leak in Output_Buffers::retire() +* Reimplemented the memory allocator from scratch +* Improved memory caching in Montgomery exponentiation +* Optimizations for multiple precision addition and subtraction +* Fixed a build problem in the hardware timer module on 64-bit PowerPC +* Changed default Karatsuba cutoff to 12 words (was 14) +* Removed MemoryRegion::bits(), which was unused and incorrect +* Changed maximum HMAC keylength to 1024 bits +* Various minor Makefile and build system changes +* Avoid using std::min in <secmem.h> to bypass Windows libc macro pollution +* Switched checks/clock.cpp back to using clock() by default +* Enabled the symmetric algorithm tests, which were accidentally off in 1.5.1 +* Removed the Default_Mutex's unused clone() member function + +Version 1.5.1, 2006-01-08 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Implemented Montgomery exponentiation +* Implemented generalized Karatsuba multiplication and squaring +* Implemented Comba squaring for 4, 6, and 8 word inputs +* Added new Modular_Exponentiator and Power_Mod classes +* Removed FixedBase_Exp and FixedExponent_Exp +* Fixed a performance regression in get_allocator introduced in 1.5.0 +* Engines can now offer S2K algorithms and block cipher padding methods +* Merged the remaining global 'algolist' code into Default_Engine +* The low-level MPI code is linked as C again +* Replaced BigInt's get_nibble with the more general get_substring +* Some documentation updates + +Version 1.5.0, 2006-01-01 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Moved all global/shared library state into a single object +* Mutex objects are created through mutex factories instead of a global +* Removed ::get_mutex(), ::initialize_mutex(), and Mutex::clone() +* Removed the RNG_Quality enum entirely +* There is now only a single global-use PRNG +* Removed the no_aliases and no_oids options for LibraryInitializer +* Removed the deprecated algorithms SEAL, ISAAC, and HAVAL +* Change es_ftw to use unbuffered I/O + +Version 1.4.11, 2005-12-31 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Changed Whirlpool diffusion matrix to match updated algorithm spec +* Fixed several engine module build errors introduced in 1.4.10 +* Fixed two build problems in es_capi; reported by Matthew Gregan +* Added a constructor to DataSource_Memory taking a std::string +* Placing the same Filter in multiple Pipes triggers an exception +* The configure script accepts --docdir and --libdir +* Merged doc/rngs.txt into the main API document +* Thanks to Joel Low for several bug reports on early tarballs of 1.4.11 + +Version 1.4.10, 2005-12-18 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added an implementation of KASUMI, the block cipher used in 3G phones +* Refactored Pipe; output queues are now managed by a distinct class +* Made certain Filter facilities only available to subclasses of Fanout_Filter +* There is no longer any overhead in Pipe for a message that has been read out +* It is now possible to generate RSA keys as small as 128 bits +* Changed some of the core classes to derive from Algorithm as a virtual base +* Changed Randpool to use HMAC instead of a plain hash as the mixing function +* Fixed a bug in the allocators; found and fixed by Matthew Gregan +* Enabled the use of binary file I/O, when requested by the application +* The OpenSSL engine's block cipher code was missing some deallocation calls +* Disabled the es_ftw module on NetBSD, due to header problems there +* Fixed a problem preventing tm_hard from building on MacOS X on PowerPC +* Some cleanups for the modules that use inline assembler +* config.h is now stored in build/ instead of build/include/botan/ +* The header util.h was split into bit_ops.h, parsing.h, and util.h +* Cleaned up some redundant include directives + +Version 1.4.9, 2005-11-06 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added the IBM-created AES candidate algorithm MARS +* Added the South Korean block cipher SEED +* Added the stream cipher Turing +* Added the new hash function FORK-256 +* Deprecated the ISAAC stream cipher +* Twofish and RC6 are significantly faster with GCC +* Much better support for 64-bit PowerPC +* Added support for high-resolution PowerPC timers +* Fixed a bug in the configure script causing problems on FreeBSD +* Changed ANSI X9.31 to support arbitrary block ciphers +* Make the configure script a bit less noisy +* Added more test vectors for some algorithms, including all the AES finalists +* Various cosmetic source code cleanups + +Version 1.4.8, 2005-10-16 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Resolved a bad performance problem in the allocators; fix by Matt Johnston +* Worked around a Visual Studio 2003 compilation problem introduced in 1.4.7 +* Renamed OMAC to CMAC to match the official NIST naming +* Added single byte versions of update() to PK_Signer and PK_Verifier +* Removed the unused reverse_bits and reverse_bytes functions + +Version 1.4.7, 2005-09-25 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed major performance problems with recent versions of GNU C++ +* Added an implementation of the X9.31 PRNG +* Removed the X9.17 and FIPS 186-2 PRNG algorithms +* Changed defaults to use X9.31 PRNGs as global PRNG objects +* Documentation updates to reflect the PRNG changes +* Some cleanups related to the engine code +* Removed two useless headers, base_eng.h and secalloc.h +* Removed PK_Verifier::valid_signature +* Fixed configure/build system bugs affecting MacOS X builds +* Added support for the EKOPath x86-64 compiler +* Added missing destructor for BlockCipherModePaddingMethod +* Fix some build problems with Visual C++ 2005 beta +* Fix some build problems with Visual C++ 2003 Workshop + +Version 1.4.6, 2005-03-13 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fix an error in the shutdown code introduced in 1.4.5 +* Setting base/pkcs8_tries to 0 disables the builtin fail-out +* Support for XMPP identifiers in X.509 certificates +* Duplicate entries in X.509 DNs are removed +* More fixes for Borland C++, from Friedemann Kleint +* Add a workaround for buggy iostreams + +Version 1.4.5, 2005-02-26 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add support for AES encryption of private keys +* Minor fixes for PBES2 parameter decoding +* Internal cleanups for global state variables +* GCC 3.x version detection was broken in non-English locales +* Work around a Sun Forte bug affecting mem_pool.h +* Several fixes for Borland C++ 5.5, from Friedemann Kleint +* Removed inclusion of init.h into base.h +* Fixed a major bug in reading from certificate stores +* Cleaned up a couple of mutex leaks +* Removed some left-over debugging code +* Removed SSL3_MAC, SSL3_PRF, and TLS_PRF + +Version 1.4.4, 2004-12-02 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Further tweaks to the pooling allocator +* Modified EMSA3 to support SSL/TLS signatures +* Changes to support Qt/QCA, from Justin Karneges +* Moved mux_qt module code into mod_qt +* Fixes for HP-UX from Mike Desjardins + +Version 1.4.3, 2004-11-06 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Split up SecureAllocator into Allocator and Pooling_Allocator +* Memory locking allocators are more likely to be used +* Fixed the placement of includes in some modules +* Fixed broken installation procedure +* Fixes in configure script to support alternate install programs +* Modules can specify the minimum version they support + +Version 1.4.2, 2004-10-31 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed a major CRL handling bug +* Cipher and hash operations can be offloaded to engines +* Added support for cipher and hash offload in OpenSSL engine +* Improvements for 64-bit CPUs without a widening multiply instruction +* Support for SHA2-* and Whirlpool with EMSA2 +* Fixed a long-standing build problem with conflicting include files +* Fixed some examples that hadn't been updated for 1.4.x +* Portability fixes for Solaris, BSD, HP-UX, and others +* Lots of fixes and cleanups in the configure script +* Updated the Gentoo ebuild file + +Version 1.4.1, 2004-10-10 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed major errors in the X.509 and PKCS #8 copy_key functions +* Added a LAST_MESSAGE meta-message number for Pipe +* Added new aliases (3DES and DES-EDE) for Triple-DES +* Added some new functions to PK_Verifier +* Cleaned up the KDF interface +* Disabled tm_posix on BSD due to header issues +* Fixed a build problem on PowerPC with GNU C++ pre-3.4 + +Version 1.4.0, 2004-06-26 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added the FIPS 186 RNG back +* Added copy_key functions for X.509 public keys and PKCS #8 private keys +* Fixed PKCS #1 signatures with RIPEMD-128 +* Moved some code around to avoid warnings with Sun ONE compiler +* Fixed a bug in botan-config affecting OpenBSD +* Fixed some build problems on Tru64, HP-UX +* Fixed compile problems with Intel C++, Compaq C++ + +Version 1.3.14, 2004-06-12 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added support for AEP's AEP1000/AEP2000 crypto cards +* Added a Mutex module using Qt, from Justin Karneges +* Added support for engine loading in LibraryInitializer +* Tweaked SecureAllocator, giving 20% better performance under heavy load +* Added timer and memory locking modules for Win32 (tm_win32, ml_win32) +* Renamed PK_Engine to Engine_Core +* Improved the Karatsuba cutoff points +* Fixes for compiling with GCC 3.4 and Sun C++ 5.5 +* Fixes for Linux/s390, OpenBSD, and Solaris +* Added support for Linux/s390x +* The configure script was totally broken for 'generic' OS +* Removed Montgomery reduction due to bugs +* Removed an unused header, pkcs8alg.h +* check --validate returns an error code if any tests failed +* Removed duplicate entry in Unix command list for es_unix +* Moved the Cert_Usage enumeration into X509_Store +* Added new timing methods for PK benchmarks, clock_gettime and RDTSC +* Fixed a few minor bugs in the configure script +* Removed some deprecated functions from x509cert.h and pkcs10.h +* Removed the 'minimal' module, has to be updated for Engine support +* Changed MP_WORD_BITS macro to BOTAN_MP_WORD_BITS to clean up namespace +* Documentation updates + +Version 1.3.13, 2004-05-15 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Major fixes for Cygwin builds +* Minor MacOS X install fixes +* The configure script is a little better at picking the right modules +* Removed ml_unix from the 'unix' module set for Cygwin compatibility +* Fixed a stupid compile problem in pkcs10.h + +Version 1.3.12, 2004-05-02 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added ability to remove old entries from CRLs +* Swapped the first two arguments of X509_CA::update_crl() +* Added an < operator for MemoryRegion, so it can be used as a std::map key +* Changed X.509 searching by DNS name from substring to full string compares +* Renamed a few X509_Certificate and PKCS10_Request member functions +* Fixed a problem when decoding some PKCS #10 requests +* Hex_Decoder would not check inputs, reported by Vaclav Ovsik +* Changed default CRL expire time from 30 days to 7 days +* X509_CRL's default PEM header is now "X509 CRL", for OpenSSL compatibility +* Corrected errors in the API doc, fixes from Ken Perano +* More documentation about the Pipe/Filter code + +Version 1.3.11, 2004-04-01 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed two show-stopping bugs in PKCS10_Request +* Added some sanity checks in Pipe/Filter +* The DNS and URI entries would get swapped in subjectAlternativeNames +* MAC_Filter is now willing to not take a key at creation time +* Setting the expiration times of certs and CRLs is more flexible +* Fixed problems building on AIX with GCC +* Fixed some problems in the tutorial pointed out by Dominik Vogt +* Documentation updates + +Version 1.3.10, 2004-03-27 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added support for OpenPGP's ASCII armor format +* Cleaned up the RNG system; seeding is much more flexible +* Added simple autoconfiguration abilities to configure.pl +* Fixed a GCC 2.95.x compile problem +* Updated the example configuration file +* Documentation updates + +Version 1.3.9, 2004-03-07 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added an engine using OpenSSL (requires 0.9.7 or later) +* X509_Certificate would lose email addresses stored in the DN +* Fixed a missing initialization in a BigInt constructor +* Fixed several Visual C++ compile problems +* Fixed some BeOS build problems +* Fixed the WiderWake benchmark + +Version 1.3.8, 2003-12-30 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Initial introduction of engine support, which separates PK keys from + the underlying operations. An engine using GNU MP was added. + +* DSA, DH, NR, and ElGamal constructors accept taking just the private + key again since the public key is easily derived from it. + +* Montgomery reduction support was added. +* ElGamal keys now support being imported/exported as ASN.1 objects +* Added Montgomery reductions +* Added an engine that uses GNU MP (requires 4.1 or later) +* Removed the obsolete mp_gmp module +* Moved several initialization/shutdown functions to init.h +* Major refactoring of the memory containers +* New non-locking container, MemoryVector +* Fixed 64-bit problems in BigInt::set_bit/clear_bit +* Renamed PK_Key::check_params() to check_key() +* Some incompatible changes to OctetString +* Added version checking macros in version.h +* Removed the fips140 module pending rewrite +* Added some functions and hooks to help GUIs +* Moved more shared code into MDx_HashFunction +* Added a policy hook for specifying the encoding of X.509 strings + +Version 1.3.7, 2003-12-12 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed a big security problem in es_unix (use of untrusted PATH) +* Fixed several stability problems in es_unix +* Expanded the list of programs es_unix will try to use +* SecureAllocator now only preallocates blocks in special cases +* Added a special case in Global_RNG::seed for forcing a full poll +* Removed the FIPS 186 RNG added in 1.3.5 pending further testing +* Configure updates for PowerPC CPUs +* Removed the (never tested) VAX support +* Added support for S/390 Linux + +Version 1.3.6, 2003-12-07 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added a new module 'minimal', which disables most algorithms +* SecureAllocator allocates a few blocks at startup +* A few minor MPI cleanups +* RPM spec file cleanups and fixes + +Version 1.3.5, 2003-11-30 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Major improvements in ASN.1 string handling +* Added partial support for ASN.1 UTF8 STRINGs and BMP STRINGs +* Added partial support for the X.509v3 certificate policies extension +* Centralized the handling of character set information +* Added FIPS 140-2 startup self tests +* Added a module (fips140) for doing extra FIPS 140-2 tests +* Added FIPS 186-2 RNG +* Improved ASN.1 BIT STRING handling +* Removed a memory leak in PKCS10_Request +* The encoding of DirectoryString now follows PKIX guidelines +* Fixed some of the character set dependencies +* Fixed a DER encoding error for tags greater than 30 +* The BER decoder can now handle tags larger than 30 +* Fixed tm_hard.cpp to recognize SPARC on more systems +* Workarounds for a GCC 2.95.x bug in x509find.cpp +* RPM changed to install into /usr instead of /usr/local +* Added support for QNX + +Version 1.2.8, 2003-11-21 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Merged several important bug fixes from 1.3.x + +Version 1.3.4, 2003-11-21 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added a module that does certain MPI operations using GNU MP +* Added the X9.42 Diffie-Hellman PRF +* The Zlib and Bzip2 objects now use custom allocators +* Added member functions for directly hashing/MACing SecureVectors +* Minor optimizations to the MPI addition and subtraction algorithms +* Some cleanups in the low-level MPI code +* Created separate AES-{128,192,256} objects + +Version 1.3.3, 2003-11-17 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* The library can now be repeatedly initialized and shutdown without crashing +* Fixed an off-by-one error in the CTS code +* Fixed an error in the EMSA4 verification code +* Fixed a memory leak in mutex.cpp (pointed out by James Widener) +* Fixed a memory leak in Pthread_Mutex +* Fixed several memory leaks in the testing code +* Bulletproofed the EMSA/EME/KDF/MGF retrieval functions +* Minor cleanups in SecureAllocator +* Removed a needless mutex guarding the (stateless) global timer +* Fixed a piece of bash-specific code in botan-config +* X.509 objects report more information about decoding errors +* Cleaned up some of the exception handling +* Updated the example config file with new OIDSs +* Moved the build instructions into a separate document, building.tex + +Version 1.3.2, 2003-11-13 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed a bug preventing DSA signatures from verifying on X.509 objects +* Made the X509_Store search routines more efficient and flexible +* Added a function to X509_PublicKey to do easy public/private key matching +* Added support for decoding indefinite length BER data +* Changed Pipe's peek() to take an offset +* Removed Filter::set_owns in favor of the new incr_owns function +* Removed BigInt::zero() and BigInt::one() +* Renamed the PEM related options from base/pem_* to pem/* +* Added an option to specify the line width when encoding PEM +* Removed the "rng/safe_longterm" option; it's always on now +* Changed the cipher used for RNG super-encryption from ARC4 to WiderWake4+1 +* Cleaned up the base64/hex encoders and decoders +* Added an ASN.1/BER decoder as an example +* AES had its internals marked 'public' in previous versions +* Changed the value of the ASN.1 NO_OBJECT enum +* Various new hacks in the configure script +* Removed the already nominal support for SunOS + +Version 1.3.1, 2003-11-04 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Generalized a few pieces of the DER encoder +* PKCS8::load_key would fail if handed an unencrypted key +* Added a failsafe so PKCS #8 key decoding can't go into an infinite loop + +Version 1.3.0, 2003-11-02 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Major redesign of the PKCS #8 private key import/export system +* Added a small amount of UI interface code for getting passphrases +* Added heuristics that tell if a key, cert, etc is stored as PEM or BER +* Removed CS-Cipher, SHARK, ThreeWay, MD5-MAC, and EMAC +* Removed certain deprecated constructors of RSA, DSA, DH, RW, NR +* Made PEM decoding more forgiving of extra text before the header + +Version 1.2.7, 2003-10-31 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added support for reading configuration files +* Added constructors so NR and RW keys can be imported easily +* Fixed mp_asm64, which was completely broken in 1.2.6 +* Removed tm_hw_ia32 module; replaced by tm_hard +* Added support for loading certain oddly formed RSA certificates +* Fixed spelling of NON_REPUDIATION enum +* Renamed the option default_to_ca to v1_assume_ca +* Fixed a minor bug in X.509 certificate generation +* Fixed a latent bug in the OID lookup code +* Updated the RPM spec file +* Added to the tutorial + +Version 1.2.6, 2003-07-04 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Major performance increase for PK algorithms on most 64-bit systems +* Cleanups in the low-level MPI code to support asm implementations +* Fixed build problems with some versions of Compaq's C++ compiler +* Removed useless constructors for NR public and private keys +* Removed support for the patch_file directive in module files +* Removed several deprecated functions + +Version 1.2.5, 2003-06-22 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed a tricky and long-standing memory leak in Pipe +* Major cleanups and fixes in the memory allocation system +* Removed alloc_mlock, which has been superseded by the ml_unix module +* Removed a denial of service vulnerability in X509_Store +* Fixed compilation problems with VS .NET 2003 and Codewarrior 8 +* Added another variant of PKCS8::load_key, taking a memory buffer +* Fixed various minor/obscure bugs which occurred when MP_WORD_BITS != 32 +* BigInt::operator%=(word) was a no-op if the input was a power of 2 +* Fixed portability problems in BigInt::to_u32bit +* Fixed major bugs in SSL3-MAC +* Cleaned up some messes in the PK algorithms +* Cleanups and extensions for OMAC and EAX +* Made changes to the entropy estimation function +* Added a 'beos' module set for use on BeOS +* Officially deprecated a few X509:: and PKCS8:: functions +* Moved the contents of primes.h to numthry.h +* Moved the contents of x509opt.h to x509self.h +* Removed the (empty) desx.h header +* Documentation updates + +Version 1.2.4, 2003-05-29 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed a bug in EMSA1 affecting NR signature verification +* Fixed a few latent bugs in BigInt related to word size +* Removed an unused function, mp_add2_nc, from the MPI implementation +* Reorganized the core MPI files + +Version 1.2.3, 2003-05-20 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed a bug that prevented DSA/NR key generation +* Fixed a bug that prevented importing some root CA certs +* Fixed a bug in the BER decoder when handing optional bit or byte strings +* Fixed the encoding of authorityKeyIdentifier in X509_CA +* Added a sanity check in PBKDF2 for zero length passphrases +* Added versions of X509::load_key and PKCS8::load_key that take a file name +* X509_CA generates 128 bit serial numbers now +* Added tests to check PK key generation +* Added a simplistic X.509 CA example +* Cleaned up some of the examples + +Version 1.2.2, 2003-05-13 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Add checks to prevent any BigInt bugs from revealing an RSA or RW key +* Changed the interface of Global_RNG::seed +* Major improvements for the es_unix module +* Added another Win32 entropy source, es_win32 +* The Win32 CryptoAPI entropy source can now poll multiple providers +* Improved the BeOS entropy source +* Renamed pipe_unixfd module to fd_unix +* Fixed a file descriptor leak in the EGD module +* Fixed a few locking bugs + +Version 1.2.1, 2003-05-06 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added ANSI X9.23 compatible CBC padding +* Added an entropy source using Win32 CryptoAPI +* Removed the Pipe I/O operators taking a FILE* +* Moved the BigInt encoding/decoding functions into the BigInt class +* Integrated several fixes for VC++ 7 (from Hany Greiss) +* Fixed the configure.pl script for Windows builds + +Version 1.2.0, 2003-04-28 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Tweaked the Karatsuba cut-off points +* Increased the allowed keylength of HMAC and Blowfish +* Removed the 'mpi_ia32' module, pending rewrite +* Workaround a GCC 2.95.x bug in eme1.cpp + +Version 1.1.13, 2003-04-22 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added OMAC +* Added EAX authenticated cipher mode +* Diffie-Hellman would not do blinding in some cases +* Optimized the OFB and CTR modes +* Corrected Skipjack's word ordering, as per NIST clarification +* Support for all subject/issuer attribute types required by RFC 3280 +* The removeFromCRL CRL reason code is now handled correctly +* Increased the flexibility of the allocators +* Renamed Rijndael to AES, created aes.h, deleted rijndael.h +* Removed support for the 'no_timer' LibraryInitializer option +* Removed 'es_pthr' module, pending further testing +* Cleaned up get_ciph.cpp + +Version 1.1.12, 2003-04-15 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed a ASN.1 string encoding bug +* Fixed a pair of X509_DN encoding problems +* Base64_Decoder and Hex_Decoder can now validate input +* Removed support for the LibraryInitializer option 'egd_path' +* Added tests for DSA X.509 and PKCS #8 key formats +* Removed a long deprecated feature of DH_PrivateKey's constructor +* Updated the RPM .spec file +* Major documentation updates + +Version 1.1.11, 2003-04-07 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added PKCS #10 certificate requests +* Changed X509_Store searching interface to be more flexible +* Added a generic Certificate_Store interface +* Added a function for generating self-signed X.509 certs +* Cleanups and changes to X509_CA +* New examples for PKCS #10 and self-signed certificates +* Some documentation updates + +Version 1.1.10, 2003-04-03 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* X509_CA can now generate new X.509 CRLs +* Added blinding for RSA, RW, DH, and ElGamal to prevent timing attacks +* More certificate and CRL extensions/attributes are supported +* Better DN handling in X.509 certificates/CRLs +* Added a DataSink hierarchy (suggested by Jim Darby) +* Consolidated SecureAllocator and ManagedAllocator +* Many cleanups and generalizations +* Added a (slow) pthreads based EntropySource +* Fixed some threading bugs + +Version 1.1.9, 2003-02-25 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added support for using X.509v2 CRLs +* Fixed several bugs in the path validation algorithm +* Certificates can be verified for a particular usage +* Algorithm for comparing distinguished names now follows X.509 +* Cleaned up the code for the es_beos, es_ftw, es_unix modules +* Documentation updates + +Version 1.1.8, 2003-01-29 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixes for the certificate path validation algorithm in X509_Store +* Fixed a bug affecting X509_Certificate::is_ca_cert() +* Added a general configuration interface for policy issues +* Cleanups and API changes in the X.509 CA, cert, and store code +* Made various options available for X509_CA users +* Changed X509_Time's interface to work around time_t problems +* Fixed a theoretical weakness in Randpool's entropy mixing function +* Fixed problems compiling with GCC 2.95.3 and GCC 2.96 +* Fixed a configure bug (reported by Jon Wilson) affecting MinGW + +Version 1.0.2, 2003-01-12 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed an obscure SEGFAULT causing bug in Pipe +* Fixed an obscure but dangerous bug in SecureVector::swap + +Version 1.1.7, 2003-01-12 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed an obscure but dangerous bug in SecureVector::swap +* Consolidated SHA-384 and SHA-512 to save code space +* Added SSL3-MAC and SSL3-PRF +* Documentation updates, including a new tutorial + +Version 1.1.6, 2002-12-10 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Initial support for X.509v3 certificates and CAs +* Major redesign/rewrite of the ASN.1 encoding/decoding code +* Added handling for DSA/NR signatures encoded as DER SEQUENCEs +* Documented the generic cipher lookup interface +* Added an (untested) entropy source for BeOS +* Various cleanups and bug fixes + +Version 1.1.5, 2002-11-17 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added the discrete logarithm integrated encryption system (DLIES) +* Various optimizations for BigInt +* Added support for assembler optimizations in modules +* Added BigInt x86 optimizations module (mpi_ia32) + +Version 1.1.4, 2002-11-10 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Speedup of 15-30% for PK algorithms +* Implemented the PBES2 encryption scheme +* Fixed a potential bug in decoding RSA and RW private keys +* Changed the DL_Group class interface to handle different formats better +* Added support for PKCS #3 encoded DH parameters +* X9.42 DH parameters use a PEM label of 'X942 DH PARAMETERS' +* Added key pair consistency checking +* Fixed a compatibility problem with gcc 2.96 (pointed out by Hany Greiss) +* A botan-config script is generated at configure time +* Documentation updates + +Version 1.1.3, 2002-11-03 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added a generic public/private key loading interface +* Fixed a small encoding bug in RSA, RW, and DH +* Changed the PK encryption/decryption interface classes +* ECB supports using padding methods +* Added a function-based interface for library initialization +* Added support for RIPEMD-128 and Tiger PKCS#1 v1.5 signatures +* The cipher mode benchmarks now use 128-bit AES instead of DES +* Removed some obsolete typedefs +* Removed OpenCL support (opencl.h, the OPENCL_* macros, etc) +* Added tests for PKCS #8 encoding/decoding +* Added more tests for ECB and CBC + +Version 1.1.2, 2002-10-21 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Support for PKCS #8 encoded RSA, DSA, and DH private keys +* Support for Diffie-Hellman X.509 public keys +* Major reorganization of how X.509 keys are handled +* Added PKCS #5 v2.0's PBES1 encryption scheme +* Added a generic cipher lookup interface +* Added the WiderWake4+1 stream cipher +* Added support for sync-able stream ciphers +* Added a 'paranoia level' option for the LibraryInitializer +* More security for RNG output meant for long term keys +* Added documentation for some of the new 1.1.x features +* CFB's feedback argument is now specified in bits +* Renamed CTR class to CTR_BE +* Updated the RSA and DSA examples to use X.509 and PKCS #8 key formats + +Version 1.1.1, 2002-10-15 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added the Korean hash function HAS-160 +* Partial support for RSA and DSA X.509 public keys +* Added a mostly functional BER encoder/decoder +* Added support for non-deterministic MAC functions +* Initial support for PEM encoding/decoding +* Internal cleanups in the PK algorithms +* Several new convenience functions in Pipe +* Fixed two nasty bugs in Pipe +* Messed with the entropy sources for es_unix +* Discrete logarithm groups are checked for safety more closely now +* For compatibility with GnuPG, ElGamal now supports DSA-style groups + +Version 1.0.1, 2002-09-14 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed a minor bug in Randpool::random() +* Added some new aliases and typedefs for 1.1.x compatibility +* The 4096-bit RSA benchmark key was decimal instead of hex +* EMAC was returning an incorrect name + +Version 1.1.0, 2002-09-14 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added entropy estimation to the RNGs +* Improved the overall design of both Randpool and ANSI_X917_RNG +* Added a separate RNG for nonce generation +* Added window exponentiation support in power_mod +* Added a get_s2k function and the PKCS #5 S2K algorithms +* Added the TLSv1 PRF +* Replaced BlockCipherModeIV typedef with InitializationVector class +* Renamed PK_Key_Agreement_Scheme to PK_Key_Agreement +* Renamed SHA1 -> SHA_160 and SHA2_x -> SHA_x +* Added support for RIPEMD-160 PKCS#1 v1.5 signatures +* Changed the key agreement scheme interface +* Changed the S2K and KDF interfaces +* Better SCAN compatibility for HAVAL, Tiger, MISTY1, SEAL, RC5, SAFER-SK +* Added support for variable-pass Tiger +* Major speedup for Rabin-Williams key generation + +Version 1.0.0, 2002-08-26 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Octal I/O of BigInt is now supported +* Fixed portability problems in the es_egd module +* Generalized IV handling in the block cipher modes +* Added Karatsuba multiplication and k-ary exponentiation +* Fixed a problem in the multiplication routines + +Version 0.9.2, 2002-08-18 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* DH_PrivateKey::public_value() was returning the wrong value +* Various BigInt optimizations +* The filters.h header now includes hex.h and base64.h +* Moved Counter mode to ctr.h +* Fixed a couple minor problems with VC++ 7 +* Fixed problems with the RPM spec file + +Version 0.9.1, 2002-08-10 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Grand rename from OpenCL to Botan +* Major optimizations for the PK algorithms +* Added ElGamal encryption +* Added Whirlpool +* Tweaked memory allocation parameters +* Improved the method of seeding the global RNG +* Moved pkcs1.h to eme_pkcs.h +* Added more test vectors for some algorithms +* Fixed error reporting in the BigInt tests +* Removed Default_Timer, it was pointless +* Added some new example applications +* Removed some old examples that weren't that interesting +* Documented the compression modules + +Version 0.9.0, 2002-08-03 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* EMSA4 supports variable salt size +* PK_* can take a string naming the encoding method to use +* Started writing some internals documentation + +Version 0.8.7, 2002-07-30 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed bugs in EME1 and EMSA4 +* Fixed a potential crash at shutdown +* Cipher modes returned an ill-formed name +* Removed various deprecated types and headers +* Cleaned up the Pipe interface a bit +* Minor additions to the documentation +* First stab at a Visual C++ makefile (doc/Makefile.vc7) + +Version 0.8.6, 2002-07-25 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added EMSA4 (aka PSS) +* Brought the manual up to date; many corrections and additions +* Added a parallel hash function construction +* Lookup supports all available algorithms now +* Lazy initialization of the lookup tables +* Made more discrete logarithm groups available through get_dl_group() +* StreamCipher_Filter supports seeking (if the underlying cipher does) +* Minor optimization for GCD calculations +* Renamed SAFER_SK128 to SAFER_SK +* Removed many previously deprecated functions +* Some now-obsolete functions, headers, and types have been deprecated +* Fixed some bugs in DSA prime generation +* DL_Group had a constructor for DSA-style prime gen but it wasn't defined +* Reversed the ordering of the two arguments to SEAL's constructor +* Fixed a threading problem in the PK algorithms +* Fixed a minor memory leak in lookup.cpp +* Fixed pk_types.h (it was broken in 0.8.5) +* Made validation tests more verbose +* Updated the check and example applications + +Version 0.8.5, 2002-07-21 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Major changes to constructors for DL-based cryptosystems (DSA, NR, DH) +* Added a DL_Group class +* Reworking of the pubkey internals +* Support in lookup for aliases and PK algorithms +* Renamed CAST5 to CAST_128 and CAST256 to CAST_256 +* Added EMSA1 +* Reorganization of header files +* LibraryInitializer will install new allocator types if requested +* Fixed a bug in Diffie-Hellman key generation +* Did a workaround in pipe.cpp for GCC 2.95.x on Linux +* Removed some debugging code from init.cpp that made FTW ES useless +* Better checking for invalid arguments in the PK algorithms +* Reduced Base64 and Hex default line length (if line breaking is used) +* Fixes for HP's aCC compiler +* Cleanups in BigInt + +Version 0.8.4, 2002-07-14 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added Nyberg-Rueppel signatures +* Added Diffie-Hellman key exchange (kex interface is subject to change) +* Added KDF2 +* Enhancements to the lookup API +* Many things formerly taking pointers to algorithms now take names +* Speedups for prime generation +* LibraryInitializer has support for seeding the global RNG +* Reduced SAFER-SK128 memory consumption +* Reversed the ordering of public and private key values in DSA constructor +* Fixed serious bugs in MemoryMapping_Allocator +* Fixed memory leak in Lion +* FTW_EntropySource was not closing the files it read +* Fixed line breaking problem in Hex_Encoder + +Version 0.8.3, 2002-06-09 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added DSA and Rabin-Williams signature schemes +* Added EMSA3 +* Added PKCS#1 v1.5 encryption padding +* Added Filters for PK algorithms +* Added a Keyed_Filter class +* LibraryInitializer processes arguments now +* Major revamp of the PK interface classes +* Changed almost all of the Filters for non-template operation +* Changed HMAC, Lion, Luby-Rackoff to non-template classes +* Some fairly minor BigInt optimizations +* Added simple benchmarking for PK algorithms +* Added hooks for fixed base and fixed exponent modular exponentiation +* Added some examples for using RSA +* Numerous bugfixes and cleanups +* Documentation updates + +Version 0.8.2, 2002-05-18 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added an (experimental) algorithm lookup interface +* Added code for directly testing BigInt +* Added SHA2-384 +* Optimized SHA2-512 +* Major optimization for Adler32 (thanks to Dan Nicolaescu) +* Various minor optimizations in BigInt and related areas +* Fixed two bugs in X9.19 MAC, both reported by Darren Starsmore +* Fixed a bug in BufferingFilter +* Made a few fixes for MacOS X +* Added a workaround in configure.pl for GCC 2.95.x +* Better support for PowerPC, ARM, and Alpha +* Some more cleanups + +Version 0.8.1, 2002-05-06 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Major code cleanup (check doc/deprecated.txt) +* Various bugs fixed, including several portability problems +* Renamed MessageAuthCode to MessageAuthenticationCode +* A replacement for X917 is in x917_rng.h +* Changed EMAC to non-template class +* Added ANSI X9.19 compatible CBC-MAC +* TripleDES now supports 128 bit keys + +Version 0.8.0, 2002-04-24 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Merged BigInt: many bugfixes and optimizations since alpha2 +* Added RSA (rsa.h) +* Added EMSA2 (emsa2.h) +* Lots of new interface code for public key algorithms (pk_base.h, pubkey.h) +* Changed some interfaces, including SymmetricKey, to support the global rng +* Fixed a serious bug in ManagedAllocator +* Renamed RIPEMD128 to RIPEMD_128 and RIPEMD160 to RIPEMD_160 +* Removed some deprecated stuff +* Added a global random number generator (rng.h) +* Added clone functions to most of the basic algorithms +* Added a library initializer class (init.h) +* Version macros in version.h +* Moved the base classes from opencl.h to base.h +* Renamed the bzip2 module to comp_bzip2 and zlib to comp_zlib +* Documentation updates for the new stuff (still incomplete) +* Many new deprecated things: check doc/deprecated.txt + +Version 0.7.10, 2002-04-07 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Added EGD_EntropySource module (es_egd) +* Added a file tree walking EntropySource (es_ftw) +* Added MemoryLocking_Allocator module (alloc_mlock) +* Renamed the pthr_mux, unix_rnd, and mmap_mem modules +* Changed timer mechanism; the clock method can be switched on the fly. +* Renamed MmapDisk_Allocator to MemoryMapping_Allocator +* Renamed ent_file.h to es_file.h (ent_file.h is around, but deprecated) +* Fixed several bugs in MemoryMapping_Allocator +* Added more default sources for Unix_EntropySource +* Changed SecureBuffer to use same allocation methods as SecureVector +* Added bigint_divcore into mp_core to support BigInt alpha2 release +* Removed some Pipe functions deprecated since 0.7.8 +* Some fixes for the configure program + +Version 0.7.9, 2002-03-19 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Memory allocation substantially revamped +* Added memory allocation method based on mmap(2) in the mmap_mem module +* Added ECB and CTS block cipher modes (ecb.h, cts.h) +* Added a Mutex interface (mutex.h) +* Added module pthr_mux, implementing the Mutex interface +* Added Threaded Filter interface (thr_filt.h) +* All algorithms can now by keyed with SymmetricKey objects +* More testing occurs with --validate (expected failures) +* Fixed two bugs reported by Hany Greiss, in Luby-Rackoff and RC6 +* Fixed a buffering bug in Bzip_Decompress and Zlib_Decompress +* Made X917 safer (and about 1/3 as fast) +* Documentation updates + +Version 0.7.8, 2002-02-28 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* More capabilities for Pipe, inspired by SysV STREAMS, including peeking, + better buffering, and stack ops. NOT BACKWARDS COMPATIBLE: SEE DOCUMENTATION +* Added a BufferingFilter class +* Added popen() based EntropySource for generic Unix systems (unix_rnd) +* Moved 'devrand' module into main distribution (ent_file.h), renamed to + File_EntropySource, and changed interface somewhat. +* Made Randpool somewhat more conservative and also 25% faster +* Minor fixes and updates for the configure script +* Added some tweaks for memory allocation +* Documentation updates for the new Pipe interface +* Fixed various minor bugs +* Added a couple of new example programs (stack and hasher2) + +Version 0.7.7, 2001-11-24 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Filter::send now works in the constructor of a Filter subclass +* You may now have to include <opencl/pipe.h> explicitly in some code +* Added preliminary PK infrastructure classes in pubkey.h and pkbase.h +* Enhancements to SecureVector (append, destroy functions) +* New infrastructure for secure memory allocation +* Added IEEE P1363 primitives MGF1, EME1, KDF1 +* Rijndael optimizations and cleanups +* Changed CipherMode<B> to BlockCipherMode(B*) +* Fixed a nasty bug in pipe_unixfd +* Added portions of the BigInt code into the main library +* Support for VAX, SH, POWER, PowerPC-64, Intel C++ + +Version 0.7.6, 2001-10-14 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fixed several serious bugs in SecureVector created in 0.7.5 +* Square optimizations +* Fixed shared objects on MacOS X and HP-UX +* Fixed static libs for KCC 4.0; works with KCC 3.4g as well +* Full support for Athlon and K6 processors using GCC +* Added a table of prime numbers < 2**16 (primes.h) +* Some minor documentation updates + +Version 0.7.5, 2001-08-19 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Split checksum.h into adler32.h, crc24.h, and crc32.h +* Split modes.h into cbc.h, cfb.h, and ofb.h +* CBC_wPadding* has been replaced by CBC_Encryption and CBC_Decryption +* Added OneAndZeros and NoPadding methods for CBC +* Added Lion, a very fast block cipher construction +* Added an S2K base class (s2k.h) and an OpenPGP_S2K class (pgp_s2k.h) +* Basic types (ciphers, hashes, etc) know their names now (call name()) +* Changed the EntropySource type somewhat +* Big speed-ups for ISAAC, Adler32, CRC24, and CRC32 +* Optimized CAST-256, DES, SAFER-SK, Serpent, SEAL, MD2, and RIPEMD-160 +* Some semantics of SecureVector have changed slightly +* The mlock module has been removed for the time being +* Added string handling functions for hashes and MACs +* Various non-user-visible cleanups +* Shared library soname is now set to the full version number + +Version 0.7.4, 2001-07-15 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* New modules: Zlib, gettimeofday and x86 RTC timers, Unix I/O for Pipe +* Fixed a vast number of errors in the config script/makefile/specfile +* Pipe now has a stdio(3) interface as well as C++ iostreams +* ARC4 supports skipping the first N bytes of the cipher stream (ala MARK4) +* Bzip2 supports decompressing multiple concatenated streams, and flushing +* Added a simple 'overall average' score to the benchmarks +* Fixed a small bug in the POSIX timer module +* Removed a very-unlikely-to-occur bug in most of the hash functions +* filtbase.h now includes <iosfwd>, not <iostream> +* Minor documentation updates + +Version 0.7.3, 2001-06-08 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Fix build problems on Solaris/SPARC +* Fix build problems with Perl versions < 5.6 +* Fixed some stupid code that broke on a few compilers +* Added string handling functions to Pipe +* MISTY1 optimizations + +Version 0.7.2, 2001-06-03 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Build system supports modules +* Added modules for mlock, a /dev/random EntropySource, POSIX1.b timers +* Added Bzip2 compression filter, contributed by Peter Jones +* GNU make no longer required (tested with 4.4BSD pmake and Solaris make) +* Fixed minor bug in several of the hash functions +* Various other minor fixes and changes +* Updates to the documentation + +Version 0.7.1, 2001-05-16 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* Rewrote configure script: more consistent and complete +* Made it easier to find out parameters of types at run time (opencl.h) +* New functions for finding the version being used (version.h) +* New SymmetricKey interface for Filters (symkey.h) +* InvalidKeyLength now records what the invalid key length was +* Optimized DES, CS-Cipher, MISTY1, Skipjack, XTEA +* Changed GOST to use correct S-box ordering (incompatible change) +* Benchmark code was almost totally rewritten +* Many more entries in the test vector file +* Fixed minor and idiotic bug in check.cpp + +Version 0.7.0, 2001-03-01 +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +* First public release + + |