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Diffstat (limited to '')
| -rw-r--r-- | CryptoPP/des.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/CryptoPP/des.h b/CryptoPP/des.h new file mode 100644 index 000000000..62f628824 --- /dev/null +++ b/CryptoPP/des.h @@ -0,0 +1,144 @@ +#ifndef CRYPTOPP_DES_H +#define CRYPTOPP_DES_H + +/** \file +*/ + +#include "seckey.h" +#include "secblock.h" + +NAMESPACE_BEGIN(CryptoPP) + +class CRYPTOPP_DLL RawDES +{ +public: + void RawSetKey(CipherDir direction, const byte *userKey); + void RawProcessBlock(word32 &l, word32 &r) const; + +protected: + static const word32 Spbox[8][64]; + + FixedSizeSecBlock<word32, 32> k; +}; + +//! _ +struct DES_Info : public FixedBlockSize<8>, public FixedKeyLength<8> +{ + // disable DES in DLL version by not exporting this function + static const char * StaticAlgorithmName() {return "DES";} +}; + +/// <a href="http://www.weidai.com/scan-mirror/cs.html#DES">DES</a> +/*! The DES implementation in Crypto++ ignores the parity bits + (the least significant bits of each byte) in the key. However + you can use CheckKeyParityBits() and CorrectKeyParityBits() to + check or correct the parity bits if you wish. */ +class DES : public DES_Info, public BlockCipherDocumentation +{ + class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<DES_Info>, public RawDES + { + public: + void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs ¶ms); + void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; + }; + +public: + //! check DES key parity bits + static bool CheckKeyParityBits(const byte *key); + //! correct DES key parity bits + static void CorrectKeyParityBits(byte *key); + + typedef BlockCipherFinal<ENCRYPTION, Base> Encryption; + typedef BlockCipherFinal<DECRYPTION, Base> Decryption; +}; + +//! _ +struct DES_EDE2_Info : public FixedBlockSize<8>, public FixedKeyLength<16> +{ + CRYPTOPP_DLL static const char * CRYPTOPP_API StaticAlgorithmName() {return "DES-EDE2";} +}; + +/// <a href="http://www.weidai.com/scan-mirror/cs.html#DESede">DES-EDE2</a> +class DES_EDE2 : public DES_EDE2_Info, public BlockCipherDocumentation +{ + class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<DES_EDE2_Info> + { + public: + void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs ¶ms); + void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; + + protected: + RawDES m_des1, m_des2; + }; + +public: + typedef BlockCipherFinal<ENCRYPTION, Base> Encryption; + typedef BlockCipherFinal<DECRYPTION, Base> Decryption; +}; + +//! _ +struct DES_EDE3_Info : public FixedBlockSize<8>, public FixedKeyLength<24> +{ + CRYPTOPP_DLL static const char * CRYPTOPP_API StaticAlgorithmName() {return "DES-EDE3";} +}; + +/// <a href="http://www.weidai.com/scan-mirror/cs.html#DESede">DES-EDE3</a> +class DES_EDE3 : public DES_EDE3_Info, public BlockCipherDocumentation +{ + class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<DES_EDE3_Info> + { + public: + void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs ¶ms); + void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; + + protected: + RawDES m_des1, m_des2, m_des3; + }; + +public: + typedef BlockCipherFinal<ENCRYPTION, Base> Encryption; + typedef BlockCipherFinal<DECRYPTION, Base> Decryption; +}; + +//! _ +struct DES_XEX3_Info : public FixedBlockSize<8>, public FixedKeyLength<24> +{ + static const char *StaticAlgorithmName() {return "DES-XEX3";} +}; + +/// <a href="http://www.weidai.com/scan-mirror/cs.html#DESX">DES-XEX3</a>, AKA DESX +class DES_XEX3 : public DES_XEX3_Info, public BlockCipherDocumentation +{ + class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<DES_XEX3_Info> + { + public: + void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs ¶ms); + void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; + + protected: + FixedSizeSecBlock<byte, BLOCKSIZE> m_x1, m_x3; + // VS2005 workaround: calling modules compiled with /clr gets unresolved external symbol DES::Base::ProcessAndXorBlock + // if we use DES::Encryption here directly without value_ptr. + value_ptr<DES::Encryption> m_des; + }; + +public: + typedef BlockCipherFinal<ENCRYPTION, Base> Encryption; + typedef BlockCipherFinal<DECRYPTION, Base> Decryption; +}; + +typedef DES::Encryption DESEncryption; +typedef DES::Decryption DESDecryption; + +typedef DES_EDE2::Encryption DES_EDE2_Encryption; +typedef DES_EDE2::Decryption DES_EDE2_Decryption; + +typedef DES_EDE3::Encryption DES_EDE3_Encryption; +typedef DES_EDE3::Decryption DES_EDE3_Decryption; + +typedef DES_XEX3::Encryption DES_XEX3_Encryption; +typedef DES_XEX3::Decryption DES_XEX3_Decryption; + +NAMESPACE_END + +#endif |