// dh.h - written and placed in the public domain by Wei Dai //! \file //! \headerfile dh.h //! \brief Classes for Diffie-Hellman key exchange #ifndef CRYPTOPP_DH_H #define CRYPTOPP_DH_H #include "cryptlib.h" #include "gfpcrypt.h" NAMESPACE_BEGIN(CryptoPP) //! , template class DH_Domain : public DL_SimpleKeyAgreementDomainBase { typedef DL_SimpleKeyAgreementDomainBase Base; public: typedef GROUP_PARAMETERS GroupParameters; typedef typename GroupParameters::Element Element; typedef DL_KeyAgreementAlgorithm_DH DH_Algorithm; typedef DH_Domain Domain; DH_Domain() {} DH_Domain(const GroupParameters ¶ms) : m_groupParameters(params) {} DH_Domain(BufferedTransformation &bt) {m_groupParameters.BERDecode(bt);} template DH_Domain(RandomNumberGenerator &v1, const T2 &v2) {m_groupParameters.Initialize(v1, v2);} template DH_Domain(RandomNumberGenerator &v1, const T2 &v2, const T3 &v3) {m_groupParameters.Initialize(v1, v2, v3);} template DH_Domain(RandomNumberGenerator &v1, const T2 &v2, const T3 &v3, const T4 &v4) {m_groupParameters.Initialize(v1, v2, v3, v4);} template DH_Domain(const T1 &v1, const T2 &v2) {m_groupParameters.Initialize(v1, v2);} template DH_Domain(const T1 &v1, const T2 &v2, const T3 &v3) {m_groupParameters.Initialize(v1, v2, v3);} template DH_Domain(const T1 &v1, const T2 &v2, const T3 &v3, const T4 &v4) {m_groupParameters.Initialize(v1, v2, v3, v4);} const GroupParameters & GetGroupParameters() const {return m_groupParameters;} GroupParameters & AccessGroupParameters() {return m_groupParameters;} void GeneratePublicKey(RandomNumberGenerator &rng, const byte *privateKey, byte *publicKey) const { Base::GeneratePublicKey(rng, privateKey, publicKey); if (FIPS_140_2_ComplianceEnabled()) { SecByteBlock privateKey2(this->PrivateKeyLength()); this->GeneratePrivateKey(rng, privateKey2); SecByteBlock publicKey2(this->PublicKeyLength()); Base::GeneratePublicKey(rng, privateKey2, publicKey2); SecByteBlock agreedValue(this->AgreedValueLength()), agreedValue2(this->AgreedValueLength()); bool agreed1 = this->Agree(agreedValue, privateKey, publicKey2); bool agreed2 = this->Agree(agreedValue2, privateKey2, publicKey); if (!agreed1 || !agreed2 || agreedValue != agreedValue2) throw SelfTestFailure(this->AlgorithmName() + ": pairwise consistency test failed"); } } static std::string CRYPTOPP_API StaticAlgorithmName() {return GroupParameters::StaticAlgorithmNamePrefix() + DH_Algorithm::StaticAlgorithmName();} std::string AlgorithmName() const {return StaticAlgorithmName();} #ifndef CRYPTOPP_MAINTAIN_BACKWARDS_COMPATIBILITY_562 virtual ~DH_Domain() {} #endif private: const DL_KeyAgreementAlgorithm & GetKeyAgreementAlgorithm() const {return Singleton().Ref();} DL_GroupParameters & AccessAbstractGroupParameters() {return m_groupParameters;} GroupParameters m_groupParameters; }; CRYPTOPP_DLL_TEMPLATE_CLASS DH_Domain; //! Diffie-Hellman in GF(p) with key validation typedef DH_Domain DH; NAMESPACE_END #endif