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Diffstat (limited to 'extra/yassl/taocrypt/include/hmac.hpp')
-rw-r--r-- | extra/yassl/taocrypt/include/hmac.hpp | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/extra/yassl/taocrypt/include/hmac.hpp b/extra/yassl/taocrypt/include/hmac.hpp deleted file mode 100644 index a5b16cdaf38..00000000000 --- a/extra/yassl/taocrypt/include/hmac.hpp +++ /dev/null @@ -1,139 +0,0 @@ -/* - Copyright (C) 2000-2007 MySQL AB - Use is subject to license terms - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; version 2 of the License. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; see the file COPYING. If not, write to the - Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, - MA 02110-1335 USA. -*/ - -/* hamc.hpp implements HMAC, see RFC 2104 -*/ - - -#ifndef TAO_CRYPT_HMAC_HPP -#define TAO_CRYPT_HMAC_HPP - -#include "hash.hpp" - -namespace TaoCrypt { - - -// HMAC class template -template <class T> -class HMAC { -public: - enum { IPAD = 0x36, OPAD = 0x5C }; - - HMAC() : ipad_(reinterpret_cast<byte*>(&ip_)), - opad_(reinterpret_cast<byte*>(&op_)), - innerHash_(reinterpret_cast<byte*>(&innerH_)) - { - Init(); - } - void Update(const byte*, word32); - void Final(byte*); - void Init(); - - void SetKey(const byte*, word32); -private: - byte* ipad_; - byte* opad_; - byte* innerHash_; - bool innerHashKeyed_; - T mac_; - - // MSVC 6 HACK, gives compiler error if calculated in array - enum { HMAC_BSIZE = T::BLOCK_SIZE / sizeof(word32), - HMAC_DSIZE = T::DIGEST_SIZE / sizeof(word32) }; - - word32 ip_[HMAC_BSIZE]; // align ipad_ on word32 - word32 op_[HMAC_BSIZE]; // align opad_ on word32 - word32 innerH_[HMAC_DSIZE]; // align innerHash_ on word32 - - void KeyInnerHash(); - - HMAC(const HMAC&); - HMAC& operator= (const HMAC&); -}; - - -// Setup -template <class T> -void HMAC<T>::Init() -{ - mac_.Init(); - innerHashKeyed_ = false; -} - - -// Key generation -template <class T> -void HMAC<T>::SetKey(const byte* key, word32 length) -{ - Init(); - - if (length <= T::BLOCK_SIZE) - memcpy(ipad_, key, length); - else { - mac_.Update(key, length); - mac_.Final(ipad_); - length = T::DIGEST_SIZE; - } - memset(ipad_ + length, 0, T::BLOCK_SIZE - length); - - for (word32 i = 0; i < T::BLOCK_SIZE; i++) { - opad_[i] = ipad_[i] ^ OPAD; - ipad_[i] ^= IPAD; - } -} - - -// Inner Key Hash -template <class T> -void HMAC<T>::KeyInnerHash() -{ - mac_.Update(ipad_, T::BLOCK_SIZE); - innerHashKeyed_ = true; -} - - -// Update -template <class T> -void HMAC<T>::Update(const byte* msg, word32 length) -{ - if (!innerHashKeyed_) - KeyInnerHash(); - mac_.Update(msg, length); -} - - -// Final -template <class T> -void HMAC<T>::Final(byte* hash) -{ - if (!innerHashKeyed_) - KeyInnerHash(); - mac_.Final(innerHash_); - - mac_.Update(opad_, T::BLOCK_SIZE); - mac_.Update(innerHash_, T::DIGEST_SIZE); - mac_.Final(hash); - - innerHashKeyed_ = false; -} - - -} // namespace - -#endif // TAO_CRYPT_HMAC_HPP |