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author | weidai <weidai11@users.noreply.github.com> | 2002-10-04 17:31:41 +0000 |
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committer | weidai <weidai11@users.noreply.github.com> | 2002-10-04 17:31:41 +0000 |
commit | a3b6ece7ab341b5b14135baeccea7d5e4c086771 (patch) | |
tree | 8b045309c238226c32a563b1df6b9c30a2f0e0b3 /dh.h | |
download | cryptopp-git-a3b6ece7ab341b5b14135baeccea7d5e4c086771.tar.gz |
Initial revision
Diffstat (limited to 'dh.h')
-rw-r--r-- | dh.h | 93 |
1 files changed, 93 insertions, 0 deletions
@@ -0,0 +1,93 @@ +#ifndef CRYPTOPP_DH_H +#define CRYPTOPP_DH_H + +/** \file +*/ + +#include "gfpcrypt.h" + +NAMESPACE_BEGIN(CryptoPP) + +//! , +template <class GROUP_PARAMETERS, class COFACTOR_OPTION = CPP_TYPENAME GROUP_PARAMETERS::DefaultCofactorOption> +class DH_Domain : public DL_SimpleKeyAgreementDomainBase<typename GROUP_PARAMETERS::Element> +{ + typedef DL_SimpleKeyAgreementDomainBase<typename GROUP_PARAMETERS::Element> Base; + +public: + typedef GROUP_PARAMETERS GroupParameters; + typedef typename GroupParameters::Element Element; + typedef DL_KeyAgreementAlgorithm_DH<Element, COFACTOR_OPTION> KeyAgreementAlgorithm; + typedef DH_Domain<GROUP_PARAMETERS, COFACTOR_OPTION> Domain; + + DH_Domain() {} + + DH_Domain(const GroupParameters ¶ms) + : m_groupParameters(params) {} + + DH_Domain(BufferedTransformation &bt) + {m_groupParameters.BERDecode(bt);} + + template <class T2> + DH_Domain(RandomNumberGenerator &v1, const T2 &v2) + {m_groupParameters.Initialize(v1, v2);} + + template <class T2, class T3> + DH_Domain(RandomNumberGenerator &v1, const T2 &v2, const T2 &v3) + {m_groupParameters.Initialize(v1, v2, v3);} + + template <class T2, class T3, class T4> + DH_Domain(RandomNumberGenerator &v1, const T2 &v2, const T3 &v3, const T4 &v4) + {m_groupParameters.Initialize(v1, v2, v3, v4);} + + template <class T1, class T2> + DH_Domain(const T1 &v1, const T2 &v2) + {m_groupParameters.Initialize(v1, v2);} + + template <class T1, class T2, class T3> + DH_Domain(const T1 &v1, const T2 &v2, const T2 &v3) + {m_groupParameters.Initialize(v1, v2, v3);} + + template <class T1, class T2, class T3, class T4> + 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(PrivateKeyLength()); + GeneratePrivateKey(rng, privateKey2); + + SecByteBlock publicKey2(PublicKeyLength()); + Base::GeneratePublicKey(rng, privateKey2, publicKey2); + + SecByteBlock agreedValue(AgreedValueLength()), agreedValue2(AgreedValueLength()); + Agree(agreedValue, privateKey, publicKey2); + Agree(agreedValue2, privateKey2, publicKey); + + if (agreedValue != agreedValue2) + throw SelfTestFailure(AlgorithmName() + ": pairwise consistency test failed"); + } + } + +private: + const DL_KeyAgreementAlgorithm<Element> & GetKeyAgreementAlgorithm() const + {static KeyAgreementAlgorithm a; return a;} + DL_GroupParameters<Element> & AccessAbstractGroupParameters() + {return m_groupParameters;} + + GroupParameters m_groupParameters; +}; + +//! <a href="http://www.weidai.com/scan-mirror/ka.html#DH">Diffie-Hellman</a> in GF(p) with key validation +typedef DH_Domain<DL_GroupParameters_GFP_DefaultSafePrime> DH; + +NAMESPACE_END + +#endif |