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-rw-r--r--CryptoPP/rc2.h73
1 files changed, 73 insertions, 0 deletions
diff --git a/CryptoPP/rc2.h b/CryptoPP/rc2.h
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+#ifndef CRYPTOPP_RC2_H
+#define CRYPTOPP_RC2_H
+
+/** \file
+*/
+
+#include "seckey.h"
+#include "secblock.h"
+#include "algparam.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+//! _
+struct RC2_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 1, 128>
+{
+ CRYPTOPP_CONSTANT(DEFAULT_EFFECTIVE_KEYLENGTH = 1024)
+ CRYPTOPP_CONSTANT(MAX_EFFECTIVE_KEYLENGTH = 1024)
+ static const char *StaticAlgorithmName() {return "RC2";}
+};
+
+/// <a href="http://www.weidai.com/scan-mirror/cs.html#RC2">RC2</a>
+class RC2 : public RC2_Info, public BlockCipherDocumentation
+{
+ class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<RC2_Info>
+ {
+ public:
+ void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
+ unsigned int OptimalDataAlignment() const {return GetAlignmentOf<word16>();}
+
+ protected:
+ FixedSizeSecBlock<word16, 64> K; // expanded key table
+ };
+
+ class CRYPTOPP_NO_VTABLE Enc : public Base
+ {
+ public:
+ void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
+ };
+
+ class CRYPTOPP_NO_VTABLE Dec : public Base
+ {
+ public:
+ void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
+ };
+
+public:
+ class Encryption : public BlockCipherFinal<ENCRYPTION, Enc>
+ {
+ public:
+ Encryption() {}
+ Encryption(const byte *key, size_t keyLen=DEFAULT_KEYLENGTH)
+ {SetKey(key, keyLen);}
+ Encryption(const byte *key, size_t keyLen, int effectiveKeyLen)
+ {SetKey(key, keyLen, MakeParameters("EffectiveKeyLength", effectiveKeyLen));}
+ };
+
+ class Decryption : public BlockCipherFinal<DECRYPTION, Dec>
+ {
+ public:
+ Decryption() {}
+ Decryption(const byte *key, size_t keyLen=DEFAULT_KEYLENGTH)
+ {SetKey(key, keyLen);}
+ Decryption(const byte *key, size_t keyLen, int effectiveKeyLen)
+ {SetKey(key, keyLen, MakeParameters("EffectiveKeyLength", effectiveKeyLen));}
+ };
+};
+
+typedef RC2::Encryption RC2Encryption;
+typedef RC2::Decryption RC2Decryption;
+
+NAMESPACE_END
+
+#endif