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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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15
libi2pd/SSU2.cpp
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@ -124,15 +124,17 @@ namespace transport
i2p::context.GetSSU2StaticKeys ().Agree (headerX + 16, sharedSecret); i2p::context.GetSSU2StaticKeys ().Agree (headerX + 16, sharedSecret);
m_NoiseState->MixKey (sharedSecret); m_NoiseState->MixKey (sharedSecret);
// decrypt // decrypt
uint8_t * payload = buf + 64; uint8_t * payload = buf + 64;
m_NoiseState->MixHash (payload, 24); // h = SHA256(h || 24 byte encrypted payload from Session Request) for SessionCreated 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, payload, len - 80, false)) 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 "); LogPrint (eLogWarning, "SSU2: SessionRequest AEAD verification failed ");
return; return;
} }
m_NoiseState->MixHash (payload, 24); // h = SHA256(h || 24 byte encrypted payload from Session Request) for SessionCreated
// payload // payload
HandlePayload (payload, len - 80); HandlePayload (decryptedPayload.data (), decryptedPayload.size ());
m_Server.AddSession (m_SourceConnID, shared_from_this ()); m_Server.AddSession (m_SourceConnID, shared_from_this ());
SendSessionCreated (headerX + 16); SendSessionCreated (headerX + 16);
@ -497,7 +499,10 @@ namespace transport
boost::asio::buffer (payload, payloadLen) boost::asio::buffer (payload, payloadLen)
}; };
boost::system::error_code ec; boost::system::error_code ec;
m_Socket.send_to (bufs, to, 0, ec); if (to.address ().is_v6 ())
m_SocketV6.send_to (bufs, to, 0, ec);
else
m_Socket.send_to (bufs, to, 0, ec);
} }
bool SSU2Server::CreateSession (std::shared_ptr<const i2p::data::RouterInfo> router, bool SSU2Server::CreateSession (std::shared_ptr<const i2p::data::RouterInfo> router,