blumgold.h

来自「各种加密算法的集合」· C头文件 代码 · 共 50 行

#ifndef CRYPTOPP_BLUMGOLD_H 
#define CRYPTOPP_BLUMGOLD_H 
 
#include "cryptlib.h" 
#include "integer.h" 
 
NAMESPACE_BEGIN(CryptoPP) 
 
class BlumGoldwasserPublicKey : public PK_Encryptor 
{ 
public: 
	// you can use the default copy constructor to make a BlumGoldwasserPublicKey 
	// out of a BlumGoldwasserPrivateKey 
	BlumGoldwasserPublicKey(const Integer &n); 
	BlumGoldwasserPublicKey(BufferedTransformation &bt); 
 
	void DEREncode(BufferedTransformation &bt) const; 
 
	void Encrypt(RandomNumberGenerator &rng, const byte *plainText, unsigned int plainTextLength, byte *cipherText); 
 
	unsigned int MaxPlainTextLength(unsigned int cipherTextLength) const; 
	unsigned int CipherTextLength(unsigned int plainTextLength) const; 
 
protected: 
	BlumGoldwasserPublicKey() {} 
 
	Integer n;           // these are only modified in constructors 
	unsigned int modulusLen; 
}; 
 
class BlumGoldwasserPrivateKey : public BlumGoldwasserPublicKey, public PK_Decryptor 
{ 
public: 
	BlumGoldwasserPrivateKey(const Integer &n, const Integer &p, const Integer &q, const Integer &u); 
	// generate a random private key 
	BlumGoldwasserPrivateKey(RandomNumberGenerator &rng, unsigned int keybits); 
	BlumGoldwasserPrivateKey(BufferedTransformation &bt); 
 
	void DEREncode(BufferedTransformation &bt) const; 
 
	unsigned int Decrypt(const byte *cipherText, unsigned int cipherTextLength, byte *plainText); 
 
protected: 
	Integer p, q, u; 
}; 
 
NAMESPACE_END 
 
#endif