gost.h

各种加密算法的集合

#ifndef CRYPTOPP_GOST_H 
#define CRYPTOPP_GOST_H 
 
#include "cryptlib.h" 
#include "misc.h" 
 
NAMESPACE_BEGIN(CryptoPP) 
 
class GOST : public BlockTransformation 
{ 
public: 
	GOST(const byte *userKey, CipherDir); 
 
	enum {KEYLENGTH=32, BLOCKSIZE=8}; 
	unsigned int BlockSize() const {return BLOCKSIZE;} 
 
protected: 
	static void PrecalculateSTable(); 
 
	static const byte sBox[8][16]; 
	static bool sTableCalculated; 
	static word32 sTable[4][256]; 
 
	SecBlock<word32> key; 
}; 
 
class GOSTEncryption : public GOST 
{ 
public: 
	GOSTEncryption(const byte * userKey) 
		: GOST (userKey, ENCRYPTION) {} 
 
	void ProcessBlock(const byte *inBlock, byte * outBlock) const; 
	void ProcessBlock(byte * inoutBlock) const 
		{GOSTEncryption::ProcessBlock(inoutBlock, inoutBlock);} 
}; 
 
class GOSTDecryption : public GOST 
{ 
public: 
	GOSTDecryption(const byte * userKey) 
		: GOST (userKey, DECRYPTION) {} 
 
	void ProcessBlock(const byte *inBlock, byte * outBlock) const; 
	void ProcessBlock(byte * inoutBlock) const 
		{GOSTDecryption::ProcessBlock(inoutBlock, inoutBlock);} 
}; 
 
NAMESPACE_END 
#endif