Crypto++: dh2.h Source File

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(SimpleKeyAgreementDomain &domain)
00016                 : d1(domain), d2(domain) {}
00017         DH2(SimpleKeyAgreementDomain &staticDomain, SimpleKeyAgreementDomain &ephemeralDomain)
00018                 : d1(staticDomain), d2(ephemeralDomain) {}
00019 
00020         CryptoParameters & AccessCryptoParameters() {return d1.AccessCryptoParameters();}
00021 
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 GenerateStaticPrivateKey(RandomNumberGenerator &rng, byte *privateKey) const
00030                 {d1.GeneratePrivateKey(rng, privateKey);}
00031         void GenerateStaticPublicKey(RandomNumberGenerator &rng, const byte *privateKey, byte *publicKey) const
00032                 {d1.GeneratePublicKey(rng, privateKey, publicKey);}
00033         void GenerateStaticKeyPair(RandomNumberGenerator &rng, byte *privateKey, byte *publicKey) const
00034                 {d1.GenerateKeyPair(rng, privateKey, publicKey);}
00035 
00036         unsigned int EphemeralPrivateKeyLength() const
00037                 {return d2.PrivateKeyLength();}
00038         unsigned int EphemeralPublicKeyLength() const
00039                 {return d2.PublicKeyLength();}
00040         void GenerateEphemeralPrivateKey(RandomNumberGenerator &rng, byte *privateKey) const
00041                 {d2.GeneratePrivateKey(rng, privateKey);}
00042         void GenerateEphemeralPublicKey(RandomNumberGenerator &rng, const byte *privateKey, byte *publicKey) const
00043                 {d2.GeneratePublicKey(rng, privateKey, publicKey);}
00044         void GenerateEphemeralKeyPair(RandomNumberGenerator &rng, byte *privateKey, byte *publicKey) const
00045                 {d2.GenerateKeyPair(rng, privateKey, publicKey);}
00046 
00047         bool Agree(byte *agreedValue,
00048                 const byte *staticPrivateKey, const byte *ephemeralPrivateKey, 
00049                 const byte *staticOtherPublicKey, const byte *ephemeralOtherPublicKey,
00050                 bool validateStaticOtherPublicKey=true) const;
00051 
00052 protected:
00053         SimpleKeyAgreementDomain &d1, &d2;
00054 };
00055 
00056 NAMESPACE_END
00057 
00058 #endif