cbc.h

各种加密算法的集合

#ifndef CRYPTOPP_CBC_H 
#define CRYPTOPP_CBC_H 
 
#include "filters.h" 
#include "modes.h" 
 
NAMESPACE_BEGIN(CryptoPP) 
 
class CBCPaddedEncryptor : public Filter, protected CipherMode 
{ 
public: 
	CBCPaddedEncryptor(const BlockTransformation &cipher, const byte *IV, BufferedTransformation *outQueue = NULL); 
 
	void Put(byte inByte); 
	void Put(const byte *inString, unsigned int length); 
	void InputFinished(); 
 
private: 
	void ProcessBuf(); 
	unsigned int counter; 
}; 
 
class CBCPaddedDecryptor : public Filter, protected CipherMode 
{ 
public: 
	CBCPaddedDecryptor(const BlockTransformation &cipher, const byte *IV, BufferedTransformation *outQueue = NULL); 
 
	void Put(byte inByte); 
	void Put(const byte *inString, unsigned int length); 
	void InputFinished(); 
 
private: 
	friend class DefaultDecryptor;	// need access to ProcessBuf() 
	void ProcessBuf(); 
	unsigned int counter; 
	SecByteBlock temp; 
}; 
 
/// CBC mode encryptor with ciphertext stealing 
 
/** Ciphertext stealing requires at least cipher.BlockSize() bytes of plaintext. 
	Shorter plaintext will be padded with '\0's 
*/ 
class CBC_CTS_Encryptor : public Filter, protected CipherMode 
{ 
public: 
	CBC_CTS_Encryptor(const BlockTransformation &cipher, const byte *IV, BufferedTransformation *outQueue = NULL); 
 
	void Put(byte inByte); 
	void Put(const byte *inString, unsigned int length); 
	void InputFinished(); 
 
private: 
	void ProcessBuf(); 
	unsigned int counter; 
	bool bFirstBlock; 
}; 
 
class CBC_CTS_Decryptor : public Filter, protected CipherMode 
{ 
public: 
	CBC_CTS_Decryptor(const BlockTransformation &cipher, const byte *IV, BufferedTransformation *outQueue = NULL); 
 
	void Put(byte inByte); 
	void Put(const byte *inString, unsigned int length); 
	void InputFinished(); 
 
private: 
	friend class DefaultDecryptor;	// need access to ProcessBuf() 
	void ProcessBuf(); 
	unsigned int counter; 
	bool bFirstBlock; 
	SecByteBlock temp; 
	SecByteBlock buffer2; 
}; 
 
NAMESPACE_END 
 
#endif