00001 #ifndef CRYPTOPP_RC2_H
00002 #define CRYPTOPP_RC2_H
00003
00004
00005
00006
00007 #include "seckey.h"
00008 #include "secblock.h"
00009 #include "algparam.h"
00010
00011 NAMESPACE_BEGIN(CryptoPP)
00012
00013
00014 struct RC2_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 1, 128>
00015 {
00016 CRYPTOPP_CONSTANT(DEFAULT_EFFECTIVE_KEYLENGTH = 1024)
00017 CRYPTOPP_CONSTANT(MAX_EFFECTIVE_KEYLENGTH = 1024)
00018 static const char *StaticAlgorithmName() {return "RC2";}
00019 };
00020
00021
00022 class RC2 : public RC2_Info, public BlockCipherDocumentation
00023 {
00024 class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<RC2_Info>
00025 {
00026 public:
00027 void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs ¶ms);
00028
00029 protected:
00030 FixedSizeSecBlock<word16, 64> K;
00031 };
00032
00033 class CRYPTOPP_NO_VTABLE Enc : public Base
00034 {
00035 public:
00036 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
00037 };
00038
00039 class CRYPTOPP_NO_VTABLE Dec : public Base
00040 {
00041 public:
00042 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
00043 };
00044
00045 public:
00046 class Encryption : public BlockCipherFinal<ENCRYPTION, Enc>
00047 {
00048 public:
00049 Encryption() {}
00050 Encryption(const byte *key, size_t keyLen=DEFAULT_KEYLENGTH)
00051 {SetKey(key, keyLen);}
00052 Encryption(const byte *key, size_t keyLen, int effectiveKeyLen)
00053 {SetKey(key, keyLen, MakeParameters("EffectiveKeyLength", effectiveKeyLen));}
00054 };
00055
00056 class Decryption : public BlockCipherFinal<DECRYPTION, Dec>
00057 {
00058 public:
00059 Decryption() {}
00060 Decryption(const byte *key, size_t keyLen=DEFAULT_KEYLENGTH)
00061 {SetKey(key, keyLen);}
00062 Decryption(const byte *key, size_t keyLen, int effectiveKeyLen)
00063 {SetKey(key, keyLen, MakeParameters("EffectiveKeyLength", effectiveKeyLen));}
00064 };
00065 };
00066
00067 typedef RC2::Encryption RC2Encryption;
00068 typedef RC2::Decryption RC2Decryption;
00069
00070 NAMESPACE_END
00071
00072 #endif