70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
// dh2.cpp - originally written and placed in the public domain by Wei Dai
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#include "pch.h"
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#include "cryptlib.h"
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#include "misc.h"
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#include "dh2.h"
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NAMESPACE_BEGIN(CryptoPP)
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#if defined(CRYPTOPP_DEBUG) && !defined(CRYPTOPP_DOXYGEN_PROCESSING)
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struct NullCryptoParameters : public CryptoParameters
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{
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void AssignFrom(const NameValuePairs &source) {
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CRYPTOPP_UNUSED(source);
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}
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bool Validate(RandomNumberGenerator &rng, unsigned int level) const {
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CRYPTOPP_UNUSED(rng); CRYPTOPP_UNUSED(level);
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return false;
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}
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bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const {
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CRYPTOPP_UNUSED(name); CRYPTOPP_UNUSED(valueType); CRYPTOPP_UNUSED(pValue);
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return false;
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}
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};
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struct NullSimpleKeyAgreementDomain : public TwoBases<NullCryptoParameters, SimpleKeyAgreementDomain>
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{
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CryptoParameters & AccessCryptoParameters() {
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return *this;
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}
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unsigned int AgreedValueLength() const {
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return 1;
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}
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unsigned int PrivateKeyLength() const {
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return 1;
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}
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unsigned int PublicKeyLength() const {
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return 1;
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}
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void GeneratePrivateKey(RandomNumberGenerator &rng, byte *privateKey) const {
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CRYPTOPP_UNUSED(rng); CRYPTOPP_UNUSED(privateKey);
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}
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void GeneratePublicKey(RandomNumberGenerator &rng, const byte *privateKey, byte *publicKey) const {
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CRYPTOPP_UNUSED(rng); CRYPTOPP_UNUSED(privateKey); CRYPTOPP_UNUSED(publicKey);
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}
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bool Agree(byte *agreedValue, const byte *privateKey, const byte *otherPublicKey, bool validateOtherPublicKey=true) const {
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CRYPTOPP_UNUSED(agreedValue); CRYPTOPP_UNUSED(privateKey);
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CRYPTOPP_UNUSED(otherPublicKey); CRYPTOPP_UNUSED(validateOtherPublicKey);
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return false;
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}
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};
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void DH2_TestInstantiations()
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{
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NullSimpleKeyAgreementDomain dom;
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DH2 dh(dom);
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}
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#endif
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bool DH2::Agree(byte *agreedValue,
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const byte *staticSecretKey, const byte *ephemeralSecretKey,
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const byte *staticOtherPublicKey, const byte *ephemeralOtherPublicKey,
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bool validateStaticOtherPublicKey) const
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{
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return d1.Agree(agreedValue, staticSecretKey, staticOtherPublicKey, validateStaticOtherPublicKey)
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&& d2.Agree(agreedValue+d1.AgreedValueLength(), ephemeralSecretKey, ephemeralOtherPublicKey, true);
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}
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NAMESPACE_END
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