public override SSUState HandleMessage(SSUHeader header, BufRefLen reader)
{
if (header.MessageType == SSUHeader.MessageTypes.SessionCreated)
{
Logging.LogTransport($"SSU SessionConfirmedState {Session.DebugId}: Unexpected message received: {header.MessageType}");
return(this);
}
Logging.LogTransport($"SSU SessionConfirmedState: Session {Session.DebugId} established. " +
$"{header.MessageType} received. Moving to Established state.");
var next = new EstablishedState(Session);
Session.ReportConnectionEstablished();
return(next.HandleMessage(header, reader));
}
private SSUState VerifyRemoteSignature()
{
var baaddr = new BufLen(AAddr);
var bbport = BufUtils.Flip16BL((ushort)Session.MyRouterContext.UDPPort);
#if LOG_MUCH_TRANSPORT
Logging.LogTransport($"SSU {this}: X for signature {Request.X}.");
Logging.LogTransport($"SSU {this}: Y for signature {Y.Key}.");
Logging.LogTransport($"SSU {this}: Alice address for signature {baaddr}. Port {(BufLen)APort}.");
Logging.LogTransport($"SSU {this}: Bob address for signature {Request.Address}. Port {bbport}.");
Logging.LogTransport($"SSU {this}: Relay tag {(BufLen)RelayTag}. Signon time {(BufLen)ASignonTime}.");
#endif
var signdata = new BufLen[] {
Request.X, Y.Key,
baaddr, BufUtils.To16BL(APort),
Request.Address, bbport,
BufUtils.To32BL(RelayTag), BufUtils.To32BL(ASignonTime)
};
var ok = I2PSignature.DoVerify(Session.RemoteRouter.SigningPublicKey, ASign, signdata);
Logging.LogTransport($"SSU SessionCreatedState {Session.DebugId}: " +
$"{Session.RemoteRouter.Certificate.SignatureType} " +
$"signature check: {ok}");
if (!ok)
{
throw new SignatureCheckFailureException("SSU SessionCreatedState recv sig check failure");
}
Logging.LogTransport("SSU SessionCreatedState: Session " + Session.DebugId + " established. Moving to Established state.");
var next = new EstablishedState(Session);
Session.ReportConnectionEstablished();
NetDb.Inst.Statistics.SuccessfulConnect(Session.RemoteRouter.IdentHash);
return(next);
}