private OfferScriptPubKeyParameters CreateOfferScriptParameters()
{
return(new OfferScriptPubKeyParameters
{
Hashes = _PuzzleElements.OfType <RealPuzzle>().Select(p => p.Commitment.KeyHash).ToArray(),
FulfillKey = InternalState.FulfillKey,
RedeemKey = InternalState.RedeemKey.PubKey,
Expiration = EscrowScriptBuilder.ExtractEscrowScriptPubKeyParameters(InternalState.EscrowedCoin.Redeem).LockTime
});
}
private PubKey[] GetExpectedSigners()
{
var parameters = EscrowScriptBuilder.ExtractEscrowScriptPubKeyParameters(InternalState.EscrowedCoin.GetScriptCode());
if (parameters == null)
{
throw new ArgumentException("Invalid escrow");
}
return(parameters.EscrowKeys);
}
private Script GetOfferScript()
{
var escrow = EscrowScriptBuilder.ExtractEscrowScriptPubKeyParameters(InternalState.EscrowedCoin.Redeem);
return(SolverScriptBuilder.CreateOfferScript(new OfferScriptPubKeyParameters
{
Hashes = InternalState.SolvedPuzzles.Select(p => p.SolutionKey.GetHash()).ToArray(),
FulfillKey = InternalState.FulfillKey.PubKey,
RedeemKey = escrow.RedeemKey,
Expiration = escrow.LockTime
}));
}
public PromiseClientSession ReceiveTumblerEscrowedCoin(ScriptCoin escrowedCoin)
{
AssertState(TumblerClientSessionStates.WaitingTumblerEscrow);
var escrow = EscrowScriptBuilder.ExtractEscrowScriptPubKeyParameters(escrowedCoin.Redeem);
if (escrow == null || !escrow.EscrowKeys.Contains(InternalState.TumblerEscrowKey.PubKey))
{
throw new PuzzleException("invalid-escrow");
}
if (escrowedCoin.Amount != Parameters.Denomination)
{
throw new PuzzleException("invalid-amount");
}
InternalState.Status = TumblerClientSessionStates.PromisePhase;
var session = new PromiseClientSession(Parameters.CreatePromiseParamaters());
session.ConfigureEscrowedCoin(escrowedCoin, InternalState.TumblerEscrowKey);
InternalState.TumblerEscrowKey = null;
return(session);
}
public PubKey GetClientEscrowPubKey()
{
return(EscrowScriptBuilder.ExtractEscrowScriptPubKeyParameters(EscrowedCoin.Redeem)
.EscrowKeys
.First(e => e != EscrowKey.PubKey));
}