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add new session to the list after reply received

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orignal 2020-01-22 11:27:47 -05:00
parent 76f95644b7
commit 7c212bef63
2 changed files with 7 additions and 10 deletions
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12
libi2pd/ECIESX25519AEADRatchetSession.cpp
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@ -181,14 +181,12 @@ namespace garlic
{
LogPrint (eLogError, "Garlic: Can't encode elligator");
return false;
}
uint8_t aepk[32];
i2p::crypto::GetElligator ()->Decode (out + offset, aepk); // decode back for h
}
offset += 32;
// KDF1
MixHash (m_RemoteStaticKey, 32); // h = SHA256(h || bpk)
MixHash (aepk, 32); // h = SHA256(h || aepk)
MixHash (m_EphemeralKeys.GetPublicKey (), 32); // h = SHA256(h || aepk)
uint8_t sharedSecret[32];
m_EphemeralKeys.Agree (m_RemoteStaticKey, sharedSecret); // x25519(aesk, bpk)
i2p::crypto::HKDF (m_CK, sharedSecret, 32, "", m_CK); // [chainKey, key] = HKDF(chainKey, sharedSecret, "", 64)
@ -231,13 +229,11 @@ namespace garlic
{
LogPrint (eLogError, "Garlic: Can't encode elligator");
return false;
}
uint8_t bepk[32];
i2p::crypto::GetElligator ()->Decode (out + offset, bepk); // decode back for h
}
offset += 32;
// KDF for Reply Key Section
MixHash ((const uint8_t *)&tag, 8); // h = SHA256(h || tag)
MixHash (bepk, 32); // h = SHA256(h || bepk)
MixHash (m_EphemeralKeys.GetPublicKey (), 32); // h = SHA256(h || bepk)
uint8_t sharedSecret[32];
m_EphemeralKeys.Agree (m_RemoteStaticKey, sharedSecret); // sharedSecret = x25519(besk, aepk)
i2p::crypto::HKDF (m_CK, sharedSecret, 32, "", m_CK); // [chainKey, key] = HKDF(chainKey, sharedSecret, "", 64)