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handle TunnelBuildMessage for ECIES router

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orignal 2020-11-02 18:49:07 -05:00
parent b12fa97a38
commit 3907c17cf5
6 changed files with 93 additions and 17 deletions
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11
libi2pd/TunnelConfig.cpp
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@ -127,9 +127,7 @@ namespace tunnel
void TunnelHopConfig::EncryptECIES (std::shared_ptr<i2p::crypto::CryptoKeyEncryptor>& encryptor,
const uint8_t * plainText, uint8_t * encrypted, BN_CTX * ctx)
{
static const char protocolName[] = "Noise_N_25519_ChaChaPoly_SHA256"; // 31 chars
memcpy (m_CK, protocolName, 32); // ck = h = protocol_name || 0
SHA256 (m_CK, 32, m_H); // h = SHA256(h);
InitBuildRequestRecordNoiseState (*this);
uint8_t hepk[32];
encryptor->Encrypt (nullptr, hepk, nullptr, false);
MixHash (hepk, 32); // h = SHA256(h || hepk)
@ -150,5 +148,12 @@ namespace tunnel
}
MixHash (encrypted, ECIES_BUILD_REQUEST_RECORD_CLEAR_TEXT_SIZE + 16); // h = SHA256(h || ciphertext)
}
void InitBuildRequestRecordNoiseState (i2p::crypto::NoiseSymmetricState& state)
{
static const char protocolName[] = "Noise_N_25519_ChaChaPoly_SHA256"; // 31 chars
memcpy (state.m_CK, protocolName, 32); // ck = h = protocol_name || 0
SHA256 (state.m_CK, 32, state.m_H); // h = SHA256(h);
}
}
}