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56 lines
1.8 KiB
56 lines
1.8 KiB
#ifndef CRYPTOPP_XTRCRYPT_H |
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#define CRYPTOPP_XTRCRYPT_H |
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/** \file |
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"The XTR public key system" by Arjen K. Lenstra and Eric R. Verheul |
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*/ |
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#include "cryptlib.h" |
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#include "xtr.h" |
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#include "integer.h" |
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NAMESPACE_BEGIN(CryptoPP) |
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//! XTR-DH with key validation |
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class XTR_DH : public SimpleKeyAgreementDomain, public CryptoParameters |
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{ |
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typedef XTR_DH ThisClass; |
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public: |
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XTR_DH(const Integer &p, const Integer &q, const GFP2Element &g); |
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XTR_DH(RandomNumberGenerator &rng, unsigned int pbits, unsigned int qbits); |
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XTR_DH(BufferedTransformation &domainParams); |
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void DEREncode(BufferedTransformation &domainParams) const; |
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bool Validate(RandomNumberGenerator &rng, unsigned int level) const; |
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bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const; |
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void AssignFrom(const NameValuePairs &source); |
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CryptoParameters & AccessCryptoParameters() {return *this;} |
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unsigned int AgreedValueLength() const {return 2*m_p.ByteCount();} |
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unsigned int PrivateKeyLength() const {return m_q.ByteCount();} |
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unsigned int PublicKeyLength() const {return 2*m_p.ByteCount();} |
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void GeneratePrivateKey(RandomNumberGenerator &rng, byte *privateKey) const; |
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void GeneratePublicKey(RandomNumberGenerator &rng, const byte *privateKey, byte *publicKey) const; |
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bool Agree(byte *agreedValue, const byte *privateKey, const byte *otherPublicKey, bool validateOtherPublicKey=true) const; |
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const Integer &GetModulus() const {return m_p;} |
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const Integer &GetSubgroupOrder() const {return m_q;} |
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const GFP2Element &GetSubgroupGenerator() const {return m_g;} |
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void SetModulus(const Integer &p) {m_p = p;} |
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void SetSubgroupOrder(const Integer &q) {m_q = q;} |
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void SetSubgroupGenerator(const GFP2Element &g) {m_g = g;} |
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private: |
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unsigned int ExponentBitLength() const; |
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Integer m_p, m_q; |
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GFP2Element m_g; |
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}; |
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NAMESPACE_END |
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#endif
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