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88 lines
2.4 KiB
C++
88 lines
2.4 KiB
C++
/*
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Copyright (c) 2006, 2012, Oracle and/or its affiliates
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
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MA 02110-1301 USA.
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*/
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/* blowfish.hpp defines Blowfish
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*/
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#ifndef TAO_CRYPT_BLOWFISH_HPP
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#define TAO_CRYPT_BLOWFISH_HPP
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#include "misc.hpp"
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#include "modes.hpp"
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#ifdef USE_SYS_STL
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#include <algorithm>
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#else
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#include "algorithm.hpp"
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#endif
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namespace STL = STL_NAMESPACE;
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#if defined(TAOCRYPT_X86ASM_AVAILABLE) && defined(TAO_ASM)
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#define DO_BLOWFISH_ASM
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#endif
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namespace TaoCrypt {
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enum { BLOWFISH_BLOCK_SIZE = 8 };
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// Blowfish encryption and decryption, see
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class Blowfish : public Mode_BASE {
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public:
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enum { BLOCK_SIZE = BLOWFISH_BLOCK_SIZE, ROUNDS = 16 };
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Blowfish(CipherDir DIR, Mode MODE)
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: Mode_BASE(BLOCK_SIZE, DIR, MODE), sbox_(pbox_ + ROUNDS + 2) {}
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#ifdef DO_BLOWFISH_ASM
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void Process(byte*, const byte*, word32);
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#endif
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void SetKey(const byte* key, word32 sz, CipherDir fake = ENCRYPTION);
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void SetIV(const byte* iv) { memcpy(r_, iv, BLOCK_SIZE); }
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private:
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static const word32 p_init_[ROUNDS + 2];
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static const word32 s_init_[4 * 256];
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word32 pbox_[ROUNDS + 2 + 4 * 256];
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word32* sbox_;
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void crypt_block(const word32 in[2], word32 out[2]) const;
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void AsmProcess(const byte* in, byte* out) const;
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void ProcessAndXorBlock(const byte*, const byte*, byte*) const;
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Blowfish(const Blowfish&); // hide copy
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Blowfish& operator=(const Blowfish&); // and assign
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};
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typedef BlockCipher<ENCRYPTION, Blowfish, ECB> Blowfish_ECB_Encryption;
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typedef BlockCipher<DECRYPTION, Blowfish, ECB> Blowfish_ECB_Decryption;
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typedef BlockCipher<ENCRYPTION, Blowfish, CBC> Blowfish_CBC_Encryption;
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typedef BlockCipher<DECRYPTION, Blowfish, CBC> Blowfish_CBC_Decryption;
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} // namespace
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#endif // TAO_CRYPT_BLOWFISH_HPP
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