00001 #ifndef CRYPTOPP_DH_H
00002 #define CRYPTOPP_DH_H
00003
00004
00005
00006
00007 #include "gfpcrypt.h"
00008
00009 NAMESPACE_BEGIN(CryptoPP)
00010
00011
00012 template <class GROUP_PARAMETERS, class COFACTOR_OPTION = CPP_TYPENAME GROUP_PARAMETERS::DefaultCofactorOption>
00013 class DH_Domain : public DL_SimpleKeyAgreementDomainBase<typename GROUP_PARAMETERS::Element>
00014 {
00015 typedef DL_SimpleKeyAgreementDomainBase<typename GROUP_PARAMETERS::Element> Base;
00016
00017 public:
00018 typedef GROUP_PARAMETERS GroupParameters;
00019 typedef typename GroupParameters::Element Element;
00020 typedef DL_KeyAgreementAlgorithm_DH<Element, COFACTOR_OPTION> DH_Algorithm;
00021 typedef DH_Domain<GROUP_PARAMETERS, COFACTOR_OPTION> Domain;
00022
00023 DH_Domain() {}
00024
00025 DH_Domain(const GroupParameters ¶ms)
00026 : m_groupParameters(params) {}
00027
00028 DH_Domain(BufferedTransformation &bt)
00029 {m_groupParameters.BERDecode(bt);}
00030
00031 template <class T2>
00032 DH_Domain(RandomNumberGenerator &v1, const T2 &v2)
00033 {m_groupParameters.Initialize(v1, v2);}
00034
00035 template <class T2, class T3>
00036 DH_Domain(RandomNumberGenerator &v1, const T2 &v2, const T3 &v3)
00037 {m_groupParameters.Initialize(v1, v2, v3);}
00038
00039 template <class T2, class T3, class T4>
00040 DH_Domain(RandomNumberGenerator &v1, const T2 &v2, const T3 &v3, const T4 &v4)
00041 {m_groupParameters.Initialize(v1, v2, v3, v4);}
00042
00043 template <class T1, class T2>
00044 DH_Domain(const T1 &v1, const T2 &v2)
00045 {m_groupParameters.Initialize(v1, v2);}
00046
00047 template <class T1, class T2, class T3>
00048 DH_Domain(const T1 &v1, const T2 &v2, const T3 &v3)
00049 {m_groupParameters.Initialize(v1, v2, v3);}
00050
00051 template <class T1, class T2, class T3, class T4>
00052 DH_Domain(const T1 &v1, const T2 &v2, const T3 &v3, const T4 &v4)
00053 {m_groupParameters.Initialize(v1, v2, v3, v4);}
00054
00055 const GroupParameters & GetGroupParameters() const {return m_groupParameters;}
00056 GroupParameters & AccessGroupParameters() {return m_groupParameters;}
00057
00058 void GeneratePublicKey(RandomNumberGenerator &rng, const byte *privateKey, byte *publicKey) const
00059 {
00060 Base::GeneratePublicKey(rng, privateKey, publicKey);
00061
00062 if (FIPS_140_2_ComplianceEnabled())
00063 {
00064 SecByteBlock privateKey2(this->PrivateKeyLength());
00065 this->GeneratePrivateKey(rng, privateKey2);
00066
00067 SecByteBlock publicKey2(this->PublicKeyLength());
00068 Base::GeneratePublicKey(rng, privateKey2, publicKey2);
00069
00070 SecByteBlock agreedValue(this->AgreedValueLength()), agreedValue2(this->AgreedValueLength());
00071 this->Agree(agreedValue, privateKey, publicKey2);
00072 this->Agree(agreedValue2, privateKey2, publicKey);
00073
00074 if (agreedValue != agreedValue2)
00075 throw SelfTestFailure(this->AlgorithmName() + ": pairwise consistency test failed");
00076 }
00077 }
00078
00079 static std::string CRYPTOPP_API StaticAlgorithmName()
00080 {return GroupParameters::StaticAlgorithmNamePrefix() + DH_Algorithm::StaticAlgorithmName();}
00081 std::string AlgorithmName() const {return StaticAlgorithmName();}
00082
00083 private:
00084 const DL_KeyAgreementAlgorithm<Element> & GetKeyAgreementAlgorithm() const
00085 {return Singleton<DH_Algorithm>().Ref();}
00086 DL_GroupParameters<Element> & AccessAbstractGroupParameters()
00087 {return m_groupParameters;}
00088
00089 GroupParameters m_groupParameters;
00090 };
00091
00092 CRYPTOPP_DLL_TEMPLATE_CLASS DH_Domain<DL_GroupParameters_GFP_DefaultSafePrime>;
00093
00094
00095 typedef DH_Domain<DL_GroupParameters_GFP_DefaultSafePrime> DH;
00096
00097 NAMESPACE_END
00098
00099 #endif