diff options
author | Jack Lloyd <[email protected]> | 2016-06-20 01:20:25 -0400 |
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committer | Jack Lloyd <[email protected]> | 2016-06-20 01:20:25 -0400 |
commit | 17741e56503bf538b5cceb29269c1f4981f649fb (patch) | |
tree | 0fad04db916b008789a34c7bb41750815c2af66f /src/lib/kdf | |
parent | 23d6f67e76b633077b5de91945f61290ff091e1e (diff) | |
parent | 88ed5a6ed0c3c5c63e768d076253ecb77df2b338 (diff) |
Merge GH #483 Add ECIES and KDF1 from ISO 18033
Diffstat (limited to 'src/lib/kdf')
-rw-r--r-- | src/lib/kdf/kdf.cpp | 8 | ||||
-rw-r--r-- | src/lib/kdf/kdf1_iso18033/info.txt | 1 | ||||
-rw-r--r-- | src/lib/kdf/kdf1_iso18033/kdf1_iso18033.cpp | 35 | ||||
-rw-r--r-- | src/lib/kdf/kdf1_iso18033/kdf1_iso18033.h | 37 |
4 files changed, 81 insertions, 0 deletions
diff --git a/src/lib/kdf/kdf.cpp b/src/lib/kdf/kdf.cpp index 7f4488d32..66296bf96 100644 --- a/src/lib/kdf/kdf.cpp +++ b/src/lib/kdf/kdf.cpp @@ -21,6 +21,10 @@ #include <botan/kdf2.h> #endif +#if defined(BOTAN_HAS_KDF1_18033) +#include <botan/kdf1_iso18033.h> +#endif + #if defined(BOTAN_HAS_TLS_V10_PRF) #include <botan/prf_tls.h> #endif @@ -89,6 +93,10 @@ BOTAN_REGISTER_KDF_1HASH(KDF1, "KDF1"); BOTAN_REGISTER_KDF_1HASH(KDF2, "KDF2"); #endif +#if defined(BOTAN_HAS_KDF1_18033) +BOTAN_REGISTER_KDF_1HASH( KDF1_18033, "KDF1-18033" ); +#endif + #if defined(BOTAN_HAS_TLS_V10_PRF) BOTAN_REGISTER_KDF_NOARGS(TLS_PRF, "TLS-PRF"); #endif diff --git a/src/lib/kdf/kdf1_iso18033/info.txt b/src/lib/kdf/kdf1_iso18033/info.txt new file mode 100644 index 000000000..507a04561 --- /dev/null +++ b/src/lib/kdf/kdf1_iso18033/info.txt @@ -0,0 +1 @@ +define KDF1_18033 20160128 diff --git a/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.cpp b/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.cpp new file mode 100644 index 000000000..3ff717993 --- /dev/null +++ b/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.cpp @@ -0,0 +1,35 @@ +/* +* KDF1 from ISO 18033 +* (C) 2016 Philipp Weber +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#include <botan/kdf1_iso18033.h> + +namespace Botan { + +size_t KDF1_18033::kdf(byte key[], size_t key_len, + const byte secret[], size_t secret_len, + const byte salt[], size_t salt_len) const + { + u32bit counter = 0; + secure_vector<byte> h; + + size_t offset = 0; + while(offset != key_len && counter != 0xFFFFFFFF) + { + m_hash->update(secret, secret_len); + m_hash->update_be(counter++); + m_hash->update(salt, salt_len); + m_hash->final(h); + + const size_t added = std::min(h.size(), key_len - offset); + copy_mem(&key[offset], h.data(), added); + offset += added; + } + + return offset; + } + +} diff --git a/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.h b/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.h new file mode 100644 index 000000000..6ec7ead8e --- /dev/null +++ b/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.h @@ -0,0 +1,37 @@ +/* +* KDF1 from ISO 18033 +* (C) 2016 Philipp Weber +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#ifndef BOTAN_KDF1_18033_H__ +#define BOTAN_KDF1_18033_H__ + +#include <botan/kdf.h> +#include <botan/hash.h> + +namespace Botan { + +/** +* KDF1, from IEEE 1363 +*/ +class BOTAN_DLL KDF1_18033 : public KDF + { + public: + std::string name() const override { return "KDF1-18033(" + m_hash->name() + ")"; } + + KDF* clone() const override { return new KDF1_18033(m_hash->clone()); } + + size_t kdf(byte key[], size_t key_len, + const byte secret[], size_t secret_len, + const byte salt[], size_t salt_len) const override; + + KDF1_18033(HashFunction* h) : m_hash(h) {} + private: + std::unique_ptr<HashFunction> m_hash; + }; + +} + +#endif |