00001 #ifndef CRYPTOPP_DH2_H
00002 #define CRYPTOPP_DH2_H
00003
00007 #include "cryptlib.h"
00008
00009 NAMESPACE_BEGIN(CryptoPP)
00010
00012 class DH2 : public PK_AuthenticatedKeyAgreementDomain
00013 {
00014 public:
00015 DH2(const PK_SimpleKeyAgreementDomain &domain)
00016 : d1(domain), d2(domain) {}
00017 DH2(const PK_SimpleKeyAgreementDomain &staticDomain, const PK_SimpleKeyAgreementDomain &ephemeralDomain)
00018 : d1(staticDomain), d2(ephemeralDomain) {}
00019
00020 bool ValidateDomainParameters(RandomNumberGenerator &rng) const
00021 {return d1.ValidateDomainParameters(rng) && d2.ValidateDomainParameters(rng);}
00022 unsigned int AgreedValueLength() const
00023 {return d1.AgreedValueLength() + d2.AgreedValueLength();}
00024
00025 unsigned int StaticPrivateKeyLength() const
00026 {return d1.PrivateKeyLength();}
00027 unsigned int StaticPublicKeyLength() const
00028 {return d1.PublicKeyLength();}
00029 void GenerateStaticKeyPair(RandomNumberGenerator &rng, byte *privateKey, byte *publicKey) const
00030 {d1.GenerateKeyPair(rng, privateKey, publicKey);}
00031
00032 unsigned int EphemeralPrivateKeyLength() const
00033 {return d2.PrivateKeyLength();}
00034 unsigned int EphemeralPublicKeyLength() const
00035 {return d2.PublicKeyLength();}
00036 void GenerateEphemeralKeyPair(RandomNumberGenerator &rng, byte *privateKey, byte *publicKey) const
00037 {d2.GenerateKeyPair(rng, privateKey, publicKey);}
00038
00039 bool Agree(byte *agreedValue,
00040 const byte *staticPrivateKey, const byte *ephemeralPrivateKey,
00041 const byte *staticOtherPublicKey, const byte *ephemeralOtherPublicKey,
00042 bool validateStaticOtherPublicKey=true) const;
00043
00044 protected:
00045 const PK_SimpleKeyAgreementDomain &d1, &d2;
00046 };
00047
00048 NAMESPACE_END
00049
00050 #endif
