145 lines
4.4 KiB
C++
145 lines
4.4 KiB
C++
#ifndef CRYPTOPP_DES_H
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#define CRYPTOPP_DES_H
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/** \file
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*/
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#include "seckey.h"
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#include "secblock.h"
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NAMESPACE_BEGIN(CryptoPP)
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class CRYPTOPP_DLL RawDES
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{
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public:
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void RawSetKey(CipherDir direction, const byte *userKey);
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void RawProcessBlock(word32 &l, word32 &r) const;
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protected:
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static const word32 Spbox[8][64];
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FixedSizeSecBlock<word32, 32> k;
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};
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//! _
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struct DES_Info : public FixedBlockSize<8>, public FixedKeyLength<8>
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{
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// disable DES in DLL version by not exporting this function
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static const char * StaticAlgorithmName() {return "DES";}
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};
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/// <a href="http://www.weidai.com/scan-mirror/cs.html#DES">DES</a>
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/*! The DES implementation in Crypto++ ignores the parity bits
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(the least significant bits of each byte) in the key. However
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you can use CheckKeyParityBits() and CorrectKeyParityBits() to
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check or correct the parity bits if you wish. */
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class DES : public DES_Info, public BlockCipherDocumentation
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{
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class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<DES_Info>, public RawDES
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{
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public:
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void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs ¶ms);
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void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
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};
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public:
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//! check DES key parity bits
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static bool CheckKeyParityBits(const byte *key);
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//! correct DES key parity bits
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static void CorrectKeyParityBits(byte *key);
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typedef BlockCipherFinal<ENCRYPTION, Base> Encryption;
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typedef BlockCipherFinal<DECRYPTION, Base> Decryption;
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};
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//! _
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struct DES_EDE2_Info : public FixedBlockSize<8>, public FixedKeyLength<16>
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{
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CRYPTOPP_DLL static const char * CRYPTOPP_API StaticAlgorithmName() {return "DES-EDE2";}
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};
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/// <a href="http://www.weidai.com/scan-mirror/cs.html#DESede">DES-EDE2</a>
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class DES_EDE2 : public DES_EDE2_Info, public BlockCipherDocumentation
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{
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class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<DES_EDE2_Info>
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{
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public:
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void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs ¶ms);
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void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
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protected:
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RawDES m_des1, m_des2;
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};
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public:
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typedef BlockCipherFinal<ENCRYPTION, Base> Encryption;
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typedef BlockCipherFinal<DECRYPTION, Base> Decryption;
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};
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//! _
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struct DES_EDE3_Info : public FixedBlockSize<8>, public FixedKeyLength<24>
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{
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CRYPTOPP_DLL static const char * CRYPTOPP_API StaticAlgorithmName() {return "DES-EDE3";}
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};
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/// <a href="http://www.weidai.com/scan-mirror/cs.html#DESede">DES-EDE3</a>
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class DES_EDE3 : public DES_EDE3_Info, public BlockCipherDocumentation
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{
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class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<DES_EDE3_Info>
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{
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public:
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void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs ¶ms);
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void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
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protected:
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RawDES m_des1, m_des2, m_des3;
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};
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public:
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typedef BlockCipherFinal<ENCRYPTION, Base> Encryption;
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typedef BlockCipherFinal<DECRYPTION, Base> Decryption;
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};
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//! _
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struct DES_XEX3_Info : public FixedBlockSize<8>, public FixedKeyLength<24>
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{
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static const char *StaticAlgorithmName() {return "DES-XEX3";}
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};
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/// <a href="http://www.weidai.com/scan-mirror/cs.html#DESX">DES-XEX3</a>, AKA DESX
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class DES_XEX3 : public DES_XEX3_Info, public BlockCipherDocumentation
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{
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class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<DES_XEX3_Info>
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{
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public:
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void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs ¶ms);
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void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
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protected:
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FixedSizeSecBlock<byte, BLOCKSIZE> m_x1, m_x3;
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// VS2005 workaround: calling modules compiled with /clr gets unresolved external symbol DES::Base::ProcessAndXorBlock
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// if we use DES::Encryption here directly without value_ptr.
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value_ptr<DES::Encryption> m_des;
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};
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public:
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typedef BlockCipherFinal<ENCRYPTION, Base> Encryption;
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typedef BlockCipherFinal<DECRYPTION, Base> Decryption;
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};
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typedef DES::Encryption DESEncryption;
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typedef DES::Decryption DESDecryption;
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typedef DES_EDE2::Encryption DES_EDE2_Encryption;
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typedef DES_EDE2::Decryption DES_EDE2_Decryption;
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typedef DES_EDE3::Encryption DES_EDE3_Encryption;
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typedef DES_EDE3::Decryption DES_EDE3_Decryption;
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typedef DES_XEX3::Encryption DES_XEX3_Encryption;
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typedef DES_XEX3::Decryption DES_XEX3_Decryption;
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NAMESPACE_END
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#endif
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