/* des.hpp * * Copyright (C) 2003 Sawtooth Consulting Ltd. * * This file is part of yaSSL. * * yaSSL 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; either version 2 of the License, or * (at your option) any later version. * * yaSSL 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; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA */ /* des.hpp defines DES, DES_EDE2, and DES_EDE3 see FIPS 46-2 and FIPS 81 */ #ifndef TAO_CRYPT_DES_HPP #define TAO_CRYPT_DES_HPP #include <string.h> #include "misc.hpp" #include "modes.hpp" namespace TaoCrypt { enum { DES_BLOCK_SIZE = 8 }; // Base for all DES types class DES_BASE : public Mode_BASE { public: enum { BLOCK_SIZE = DES_BLOCK_SIZE, KEY_SIZE = 32, BOXES = 8, BOX_SIZE = 64 }; DES_BASE(CipherDir DIR, Mode MODE) : Mode_BASE(BLOCK_SIZE), dir_(DIR), mode_(MODE) {} void Process(byte*, const byte*, word32); protected: CipherDir dir_; Mode mode_; private: DES_BASE(const DES_BASE&); // hide copy DES_BASE& operator=(const DES_BASE&); // and assign }; // DES class DES : public DES_BASE { public: DES(CipherDir DIR, Mode MODE) : DES_BASE(DIR, MODE) {} void SetKey(const byte*, word32, CipherDir dir); void RawProcessBlock(word32&, word32&) const; void ProcessAndXorBlock(const byte*, const byte*, byte*) const; private: word32 k_[KEY_SIZE]; }; // DES_EDE2 class DES_EDE2 : public DES_BASE { public: DES_EDE2(CipherDir DIR, Mode MODE) : DES_BASE(DIR, MODE), des1_(DIR, MODE), des2_(DIR, MODE) {} void SetKey(const byte*, word32, CipherDir dir); void ProcessAndXorBlock(const byte*, const byte*, byte*) const; private: DES des1_; DES des2_; }; // DES_EDE3 class DES_EDE3 : public DES_BASE { public: DES_EDE3(CipherDir DIR, Mode MODE) : DES_BASE(DIR, MODE), des1_(DIR, MODE), des2_(DIR, MODE), des3_(DIR, MODE) {} void SetKey(const byte*, word32, CipherDir dir); void ProcessAndXorBlock(const byte*, const byte*, byte*) const; private: DES des1_; DES des2_; DES des3_; }; typedef BlockCipher<ENCRYPTION, DES, ECB> DES_ECB_Encryption; typedef BlockCipher<DECRYPTION, DES, ECB> DES_ECB_Decryption; typedef BlockCipher<ENCRYPTION, DES, CBC> DES_CBC_Encryption; typedef BlockCipher<DECRYPTION, DES, CBC> DES_CBC_Decryption; typedef BlockCipher<ENCRYPTION, DES_EDE2, ECB> DES_EDE2_ECB_Encryption; typedef BlockCipher<DECRYPTION, DES_EDE2, ECB> DES_EDE2_ECB_Decryption; typedef BlockCipher<ENCRYPTION, DES_EDE2, CBC> DES_EDE2_CBC_Encryption; typedef BlockCipher<DECRYPTION, DES_EDE2, CBC> DES_EDE2_CBC_Decryption; typedef BlockCipher<ENCRYPTION, DES_EDE3, ECB> DES_EDE3_ECB_Encryption; typedef BlockCipher<DECRYPTION, DES_EDE3, ECB> DES_EDE3_ECB_Decryption; typedef BlockCipher<ENCRYPTION, DES_EDE3, CBC> DES_EDE3_CBC_Encryption; typedef BlockCipher<DECRYPTION, DES_EDE3, CBC> DES_EDE3_CBC_Decryption; } // namespace #endif // TAO_CRYPT_DES_HPP