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* Fix warning in XTSJack Lloyd2019-10-061-1/+1
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* XTS optimizationsJack Lloyd2019-09-282-16/+19
| | | | Mostly caching the result of virtual functions
* Deprecate many publically available headersJack Lloyd2019-09-061-0/+2
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* Correct error with XTS minimum block sizeJack Lloyd2018-10-151-1/+1
| | | | | | | Add tests from NIST that demonstrate the problem, as well as OpenSSL generated tests for all input sizes 16...128 bytes. Fixes GH #1706
* Have cipher modes also verify that the nonce is set prior to useJack Lloyd2018-08-172-2/+6
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* Make stream, block, hash and cipher mode base classes optionalJack Lloyd2018-01-121-0/+1
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* Add a function for checking if poly_double_n supports a particular sizeJack Lloyd2017-11-181-4/+1
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* OCB optimizationsJack Lloyd2017-10-121-8/+2
| | | | From ~5 cbp to ~2.5 cbp on Skylake
* Make poly_dbl.h a submodule of utilsJack Lloyd2017-09-271-0/+4
| | | | | Only required by a few modules and if none of them are in use then the whole thing can just be skipped from the build.
* Header file cleanupsJack Lloyd2017-09-211-1/+0
| | | | Some help from include-what-you-use
* Change header guard format to BOTAN_FOO_H_Jack Lloyd2017-09-201-2/+2
| | | | | | ISO C++ reserves names with double underscores in them Closes #512
* Add API stability annotations.Jack Lloyd2017-09-191-3/+3
| | | | | Defined in build.h, all equal to BOTAN_DLL so ties into existing system for exporting symbols.
* Simplify polynomial doubling codeJack Lloyd2017-09-051-44/+12
| | | | | | | | | | GCC and Clang generate effectively identical code for a template with parameters, vs completely unrolled code as was used previously. Add a little-endian variant so XTS can use it. This extends XTS support to cover 256 and 512-bit ciphers. I was not able to find another implementation that supports both XTS and ciphers with large blocks, so the XTS test vectors are self-generated.
* Remove "Dirty hack" for multiple defines in lex_me_harder()Simon Warta2017-04-021-1/+3
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* Convert to using standard uintN_t integer typesJack Lloyd2016-12-182-20/+20
| | | | | | Renames a couple of functions for somewhat better name consistency, eg make_u32bit becomes make_uint32. The old typedefs remain for now since probably lots of application code uses them.
* Cipher_Mode and AEAD_Mode improvementsDaniel Neus2016-11-082-0/+10
| | | | | | | | | | | | See PR #552 - Add Cipher_Mode::reset() which resets just the message specific state and allows encrypting again under the existing key - In Cipher_Mode::clear() (at some planes) use cipher->clear() instead of resetting the pointer which would make the cipher object unusable - EAX_Decryption::output_length() bugfix?! Now its possible to decrypt an empty ciphertext (just a tag) - Bugfix for GCM_Decryption::finish() - set tag length in GCM_Mode::name() - Cipher_Mode tests: add tests for reset()and process() - AEAD_Mode tests: add tests for reset(), clear(), update() and process()
* Remove Algo_RegistryJack Lloyd2016-10-211-1/+1
| | | | | | | I repent my use of global constructors. I repent my use of global locks. Hopefully I will never touch this code again. :)
* Improve modes doxygen [ci skip]René Korthaus2016-10-191-0/+6
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* Cipher_Mode API improvementsJack Lloyd2016-09-012-16/+10
| | | | | | | | | | | | | | | | | | | | The Cipher_Mode::update API is more general than needed to just support ciphers (this is due to it previously being an API of Transform which before 8b85b780515 was Cipher_Mode's base class) Define a less general interface `process` which either processes the blocks in-place, producing exactly as much output as there was input, or (SIV/CCM case) saves the entire message for processing in `finish`. These two uses cover all current or anticipated cipher modes. Leaves `update` for compatability with existing callers; all that is needed is an inline function forwarding to `process`. Removes the return type from `start` - in all cipher implementations, this always returned an empty vector. Adds BOTAN_ARG_CHECK macro; right now BOTAN_ASSERT is being used for argument checking in some places, which is not right at all.
* cppcheck fixes: Class 'X' has a constructor with 1 argument that is not ↵Daniel Neus2016-03-051-3/+3
| | | | explicit.
* Add final attribute to many classesJack Lloyd2016-01-101-2/+2
| | | | | | | In some cases this can offer better optimization, via devirtualization. And it lets the user know the class is not intended for derivation. Some discussion in GH #402
* Reroot the exception hierarchy into a toplevel Exception classJack Lloyd2015-12-111-1/+1
| | | | | | | | As the alternatives are unfortunate for applications trying to catch all library errors, and it seems deriving from std::runtime_error causes problems with MSVC DLLs (GH #340) Effectively reverts 2837e915d82e43
* Same treatment for cipher modesJack Lloyd2015-09-101-2/+0
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* For CBC, ECB, and XTS the output length of a zero length input is wellJack Lloyd2015-08-041-3/+1
| | | | | | defined, so don't fail. Fix XTS, as XTS always uses ciphertext stealing the value of output_length had been incorrect in rounding up to the block size.
* Fix round_upSimon Warta2015-07-151-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. src/lib/codec/base64/base64.cpp: : (round_up<size_t>(input_length, 3) / 3) * 4; 2. src/lib/codec/base64/base64.cpp: : (round_up<size_t>(input_length, 4) * 3) / 4; 3. src/lib/filters/transform_filter.cpp: return round_up(target_size, update_granularity); 4. src/lib/math/bigint/bigint.cpp: m_reg.resize(round_up<size_t>(size, 8)); 5. src/lib/math/bigint/bigint.cpp: m_reg.resize(round_up<size_t>((length / WORD_BYTES) + 1, 8)); 6. src/lib/math/numbertheory/mp_numth.cpp: BigInt z(BigInt::Positive, round_up<size_t>(2*x_sw, 16)); 7. src/lib/modes/cbc/cbc.cpp: return round_up(input_length, cipher().block_size()); 8. src/lib/modes/ecb/ecb.cpp: return round_up(input_length, cipher().block_size()); 9. src/lib/modes/xts/xts.cpp: return round_up(input_length, cipher().block_size()); 10. src/lib/pbkdf/pbkdf2/pbkdf2.cpp: const size_t blocks_needed = round_up(out_len, prf_sz) / prf_sz; 11. src/lib/tls/tls_record.cpp: const size_t buf_size = round_up( 12. src/lib/utils/rounding.h:inline T round_up(T n, T align_to) 1. Reason for change 2. Reason for change 3. first argument cannot be 0 (`target_size = 1024`) 4. Is a bug in the current implementation iff `size = 0` 5. first argument cannot be 0 6. round_up should return 0 if `x_sw = 0` 7. ? 8. ? 9. ? 10. first argument cannot be 0 (`if(out_len == 0) return 0;`) 11. first argument is unlikely to be 0 (`iv_size + msg_length + mac_size + (block_size ? 1 : 0)`) 12. Implementation
* lib/modes: Convert &vec[0] to vec.data()Simon Warta2015-06-242-9/+9
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* Fix code that triggers a strange MSVC 'performance warning'git2015-04-081-2/+2
| | | | Github pull 74 from Chris Desjardins
* Add BOTAN_DLL back to LibraryInitializer and move some of the implementation tolloyd2015-03-111-2/+2
| | | | | | | a source file. Without BOTAN_DLL the LibraryInitializer was removed entirely from the list of symbols which is not desired. Add some casts to avoid scary sounding but (upon review) harmless warnings from MSVC
* Add a runtime map of string->func() which when called returnlloyd2015-01-281-3/+3
| | | | | | | | | | | | | | | | | Transforms and BlockCiphers. Registration for all types is done at startup but is very cheap as just a std::function and a std::map entry are created, no actual objects are created until needed. This is a huge improvement over Algorithm_Factory which used T::clone() as the function and thus kept a prototype object of each type in memory. Replace existing lookup mechanisms for ciphers, AEADs, and compression to use the transform lookup. The existing Engine framework remains in place for BlockCipher, but the engines now just call to the registry instead of having hardcoded lookups. s/Transformation/Transform/ with typedefs for compatability. Remove lib/selftest code (for runtime selftesting): not the right approach.
* Ensure all files have copyright and license info.lloyd2015-01-102-2/+2
| | | | | Update license header line to specify the terms and refer to the file, neither of which it included before.
* Replace Transformatio::nstart with start_raw so we can do a full setlloyd2014-11-052-3/+2
| | | | of overloads in the base class with the same name.
* Avoid strict overflow warnings in GCC 4.8lloyd2014-01-241-2/+10
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* Guess I won't be needing theselloyd2014-01-181-1/+0
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* Split off the keyed interfaces of transform to Keyed_Transformlloyd2014-01-181-1/+1
| | | | | Remove the unhelpful 'Algorithm' base class which had previously acted more or less as a global base.
* Move lib into srclloyd2014-01-103-0/+372
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