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62 lines
1.6 KiB
62 lines
1.6 KiB
/* |
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* Copyright (c) 2013-2018, The PurpleI2P Project |
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* |
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* This file is part of Purple i2pd project and licensed under BSD3 |
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* |
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*/ |
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#ifndef GOST_H__ |
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#define GOST_H__ |
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#include <memory> |
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#include <inttypes.h> |
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#include <openssl/ec.h> |
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namespace i2p |
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{ |
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namespace crypto |
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{ |
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// ГОСТ Р 34.10 |
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enum GOSTR3410ParamSet |
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{ |
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eGOSTR3410CryptoProA = 0, // 1.2.643.2.2.35.1 |
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// XchA = A, XchB = C |
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//eGOSTR3410CryptoProXchA, // 1.2.643.2.2.36.0 |
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//eGOSTR3410CryptoProXchB, // 1.2.643.2.2.36.1 |
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eGOSTR3410TC26A512, // 1.2.643.7.1.2.1.2.1 |
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eGOSTR3410NumParamSets |
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}; |
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class GOSTR3410Curve |
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{ |
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public: |
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GOSTR3410Curve (BIGNUM * a, BIGNUM * b, BIGNUM * p, BIGNUM * q, BIGNUM * x, BIGNUM * y); |
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~GOSTR3410Curve (); |
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size_t GetKeyLen () const { return m_KeyLen; }; |
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const EC_GROUP * GetGroup () const { return m_Group; }; |
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EC_POINT * MulP (const BIGNUM * n) const; |
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bool GetXY (const EC_POINT * p, BIGNUM * x, BIGNUM * y) const; |
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EC_POINT * CreatePoint (const BIGNUM * x, const BIGNUM * y) const; |
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void Sign (const BIGNUM * priv, const BIGNUM * digest, BIGNUM * r, BIGNUM * s); |
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bool Verify (const EC_POINT * pub, const BIGNUM * digest, const BIGNUM * r, const BIGNUM * s); |
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EC_POINT * RecoverPublicKey (const BIGNUM * digest, const BIGNUM * r, const BIGNUM * s, bool isNegativeY = false) const; |
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private: |
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EC_GROUP * m_Group; |
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size_t m_KeyLen; // in bytes |
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}; |
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std::unique_ptr<GOSTR3410Curve>& GetGOSTR3410Curve (GOSTR3410ParamSet paramSet); |
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// Big Endian |
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void GOSTR3411_2012_256 (const uint8_t * buf, size_t len, uint8_t * digest); |
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void GOSTR3411_2012_512 (const uint8_t * buf, size_t len, uint8_t * digest); |
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} |
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} |
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#endif
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