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# dh2.h

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    00001 #ifndef CRYPTOPP_DH2_H
    00002 #define CRYPTOPP_DH2_H
    00003
    00004 /** \file
    00005 */
    00006
    00007 #include "cryptlib.h"
    00008
    00009 NAMESPACE_BEGIN(CryptoPP)
    00010
    00011 /// <a href="http://www.weidai.com/scan-mirror/ka.html#DH2">Unified Diffie-Hellman</a>
    00012 class DH2 : public AuthenticatedKeyAgreementDomain
    00013 {
    00014 public:
    00015         DH2(const SimpleKeyAgreementDomain &domain)
    00016                 : d1(domain), d2(domain) {}
    00017         DH2(const SimpleKeyAgreementDomain &staticDomain, const SimpleKeyAgreementDomain &ephemeralDomain)
    00018                 : d1(staticDomain), d2(ephemeralDomain) {}
    00019
    00020         unsigned int AgreedValueLength() const
    00021                 {return d1.AgreedValueLength() + d2.AgreedValueLength();}
    00022
    00023         unsigned int StaticPrivateKeyLength() const
    00024                 {return d1.PrivateKeyLength();}
    00025         unsigned int StaticPublicKeyLength() const
    00026                 {return d1.PublicKeyLength();}
    00027         void GenerateStaticPrivateKey(RandomNumberGenerator &rng, byte *privateKey) const
    00028                 {d1.GeneratePrivateKey(rng, privateKey);}
    00029         void GenerateStaticPublicKey(RandomNumberGenerator &rng, const byte *privateKey, byte *publicKey) const
    00030                 {d1.GeneratePublicKey(rng, privateKey, publicKey);}
    00031         void GenerateStaticKeyPair(RandomNumberGenerator &rng, byte *privateKey, byte *publicKey) const
    00032                 {d1.GenerateKeyPair(rng, privateKey, publicKey);}
    00033
    00034         unsigned int EphemeralPrivateKeyLength() const
    00035                 {return d2.PrivateKeyLength();}
    00036         unsigned int EphemeralPublicKeyLength() const
    00037                 {return d2.PublicKeyLength();}
    00038         void GenerateEphemeralPrivateKey(RandomNumberGenerator &rng, byte *privateKey) const
    00039                 {d2.GeneratePrivateKey(rng, privateKey);}
    00040         void GenerateEphemeralPublicKey(RandomNumberGenerator &rng, const byte *privateKey, byte *publicKey) const
    00041                 {d2.GeneratePublicKey(rng, privateKey, publicKey);}
    00042         void GenerateEphemeralKeyPair(RandomNumberGenerator &rng, byte *privateKey, byte *publicKey) const
    00043                 {d2.GenerateKeyPair(rng, privateKey, publicKey);}
    00044
    00045         bool Agree(byte *agreedValue,
    00046                 const byte *staticPrivateKey, const byte *ephemeralPrivateKey,
    00047                 const byte *staticOtherPublicKey, const byte *ephemeralOtherPublicKey,
    00048                 bool validateStaticOtherPublicKey=true) const;
    00049
    00050 protected:
    00051         const SimpleKeyAgreementDomain &d1, &d2;
    00052 };
    00053
    00054 NAMESPACE_END
    00055
    00056 #endif