dh.h

各种加密算法的集合

#ifndef CRYPTOPP_DH_H 
#define CRYPTOPP_DH_H 
 
#include "modexppc.h" 
 
NAMESPACE_BEGIN(CryptoPP) 
 
// Diffie-Hellman in GF(p) with key validation 
 
class DH : public PK_WithPrecomputation<PK_SimpleKeyAgreementDomain> 
{ 
public: 
	DH(const Integer &p, const Integer &g); 
	DH(RandomNumberGenerator &rng, unsigned int pbits); 
	DH(BufferedTransformation &domainParams); 
 
	void DEREncode(BufferedTransformation &domainParams) const; 
 
	void Precompute(unsigned int precomputationStorage=16); 
	void LoadPrecomputation(BufferedTransformation &storedPrecomputation); 
	void SavePrecomputation(BufferedTransformation &storedPrecomputation) const; 
 
	bool ValidateDomainParameters(RandomNumberGenerator &rng) const; 
	unsigned int AgreedValueLength() const {return p.ByteCount();} 
	unsigned int PrivateKeyLength() const {return p.ByteCount();} 
	unsigned int PublicKeyLength() const {return p.ByteCount();} 
 
	void GenerateKeyPair(RandomNumberGenerator &rng, byte *privateKey, byte *publicKey) const; 
	bool Agree(byte *agreedValue, const byte *privateKey, const byte *otherPublicKey, bool validateOtherPublicKey=true) const; 
 
	const Integer &Prime() const {return p;} 
	const Integer &Generator() const {return g;} 
 
private: 
	unsigned int ExponentBitLength() const; 
 
	Integer p, g; 
	ModExpPrecomputation gpc; 
}; 
 
NAMESPACE_END 
 
#endif