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MixHash with encrypted payload after decryption

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orignal 2022-03-18 15:32:32 -04:00
parent 765e0e5c6b
commit 5c9af1c613
1 changed files with 10 additions and 5 deletions
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11
libi2pd/SSU2.cpp
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@ -125,14 +125,16 @@ namespace transport
m_NoiseState->MixKey (sharedSecret);
// decrypt
uint8_t * payload = buf + 64;
m_NoiseState->MixHash (payload, 24); // h = SHA256(h || 24 byte encrypted payload from Session Request) for SessionCreated
if (!i2p::crypto::AEADChaCha20Poly1305 (payload, len - 80, m_NoiseState->m_H, 32, m_NoiseState->m_CK + 32, nonce, payload, len - 80, false))
std::vector<uint8_t> decryptedPayload(len - 80);
if (!i2p::crypto::AEADChaCha20Poly1305 (payload, len - 80, m_NoiseState->m_H, 32,
m_NoiseState->m_CK + 32, nonce, decryptedPayload.data (), decryptedPayload.size (), false))
{
LogPrint (eLogWarning, "SSU2: SessionRequest AEAD verification failed ");
return;
}
m_NoiseState->MixHash (payload, 24); // h = SHA256(h || 24 byte encrypted payload from Session Request) for SessionCreated
// payload
HandlePayload (payload, len - 80);
HandlePayload (decryptedPayload.data (), decryptedPayload.size ());
m_Server.AddSession (m_SourceConnID, shared_from_this ());
SendSessionCreated (headerX + 16);
@ -497,6 +499,9 @@ namespace transport
boost::asio::buffer (payload, payloadLen)
};
boost::system::error_code ec;
if (to.address ().is_v6 ())
m_SocketV6.send_to (bufs, to, 0, ec);
else
m_Socket.send_to (bufs, to, 0, ec);
}