00001 #ifndef CRYPTOPP_TEA_H
00002 #define CRYPTOPP_TEA_H
00003
00004
00005
00006
00007 #include "seckey.h"
00008 #include "secblock.h"
00009
00010 NAMESPACE_BEGIN(CryptoPP)
00011
00012
00013 struct TEA_Info : public FixedBlockSize<8>, public FixedKeyLength<16>, public VariableRounds<32>
00014 {
00015 static const char *StaticAlgorithmName() {return "TEA";}
00016 };
00017
00018
00019 class TEA : public TEA_Info, public BlockCipherDocumentation
00020 {
00021 class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<TEA_Info>
00022 {
00023 public:
00024 void UncheckedSetKey(CipherDir direction, const byte *userKey, unsigned int length, unsigned int rounds);
00025
00026 protected:
00027 FixedSizeSecBlock<word32, 4> m_k;
00028 word32 m_limit;
00029 };
00030
00031 class CRYPTOPP_NO_VTABLE Enc : public Base
00032 {
00033 public:
00034 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
00035 };
00036
00037 class CRYPTOPP_NO_VTABLE Dec : public Base
00038 {
00039 public:
00040 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
00041 };
00042
00043 public:
00044 typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
00045 typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
00046 };
00047
00048 typedef TEA::Encryption TEAEncryption;
00049 typedef TEA::Decryption TEADecryption;
00050
00051
00052 struct XTEA_Info : public FixedBlockSize<8>, public FixedKeyLength<16>, public VariableRounds<32>
00053 {
00054 static const char *StaticAlgorithmName() {return "XTEA";}
00055 };
00056
00057
00058 class XTEA : public XTEA_Info, public BlockCipherDocumentation
00059 {
00060 class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<XTEA_Info>
00061 {
00062 public:
00063 void UncheckedSetKey(CipherDir direction, const byte *userKey, unsigned int length, unsigned int rounds);
00064
00065 protected:
00066 FixedSizeSecBlock<word32, 4> m_k;
00067 word32 m_limit;
00068 };
00069
00070 class CRYPTOPP_NO_VTABLE Enc : public Base
00071 {
00072 public:
00073 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
00074 };
00075
00076 class CRYPTOPP_NO_VTABLE Dec : public Base
00077 {
00078 public:
00079 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
00080 };
00081
00082 public:
00083 typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
00084 typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
00085 };
00086
00087
00088 struct BTEA_Info : public FixedKeyLength<16>
00089 {
00090 static const char *StaticAlgorithmName() {return "BTEA";}
00091 };
00092
00093
00094
00095 class BTEA : public BTEA_Info, public BlockCipherDocumentation
00096 {
00097 class CRYPTOPP_NO_VTABLE Base : public AlgorithmImpl<SimpleKeyingInterfaceImpl<BlockCipher, BTEA_Info>, BTEA_Info>, public BTEA_Info
00098 {
00099 public:
00100 template <class T>
00101 static inline void CheckedSetKey(T *obj, CipherDir dir, const byte *key, size_t length, const NameValuePairs ¶m)
00102 {
00103 obj->ThrowIfInvalidKeyLength(length);
00104 obj->m_blockSize = param.GetIntValueWithDefault("BlockSize", 60*4);
00105 GetUserKey(BIG_ENDIAN_ORDER, obj->m_k.begin(), 4, key, KEYLENGTH);
00106 }
00107
00108 unsigned int BlockSize() const {return m_blockSize;}
00109
00110 protected:
00111 FixedSizeSecBlock<word32, 4> m_k;
00112 unsigned int m_blockSize;
00113 };
00114
00115 class CRYPTOPP_NO_VTABLE Enc : public Base
00116 {
00117 public:
00118 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
00119 };
00120
00121 class CRYPTOPP_NO_VTABLE Dec : public Base
00122 {
00123 public:
00124 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
00125 };
00126
00127 public:
00128 typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
00129 typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
00130 };
00131
00132 NAMESPACE_END
00133
00134 #endif