public async Task <IActionResult> SignWithSeed([ModelBinder(typeof(WalletIdModelBinder))]
WalletId walletId, SignWithSeedViewModel viewModel)
{
if (!ModelState.IsValid)
{
return(View(viewModel));
}
var network = NetworkProvider.GetNetwork <BTCPayNetwork>(walletId.CryptoCode);
if (network == null)
{
throw new FormatException("Invalid value for crypto code");
}
ExtKey extKey = viewModel.GetExtKey(network.NBitcoinNetwork);
if (extKey == null)
{
ModelState.AddModelError(nameof(viewModel.SeedOrKey),
"Seed or Key was not in a valid format. It is either the 12/24 words or starts with xprv");
}
var psbt = PSBT.Parse(viewModel.PSBT, network.NBitcoinNetwork);
if (!psbt.IsReadyToSign())
{
ModelState.AddModelError(nameof(viewModel.PSBT), "PSBT is not ready to be signed");
}
if (!ModelState.IsValid)
{
return(View(viewModel));
}
ExtKey signingKey = null;
var settings = GetDerivationSchemeSettings(walletId);
var signingKeySettings = settings.GetSigningAccountKeySettings();
if (signingKeySettings.RootFingerprint is null)
{
signingKeySettings.RootFingerprint = extKey.GetPublicKey().GetHDFingerPrint();
}
RootedKeyPath rootedKeyPath = signingKeySettings.GetRootedKeyPath();
// The user gave the root key, let's try to rebase the PSBT, and derive the account private key
if (rootedKeyPath?.MasterFingerprint == extKey.GetPublicKey().GetHDFingerPrint())
{
psbt.RebaseKeyPaths(signingKeySettings.AccountKey, rootedKeyPath);
signingKey = extKey.Derive(rootedKeyPath.KeyPath);
}
// The user maybe gave the account key, let's try to sign with it
else
{
signingKey = extKey;
}
var balanceChange = psbt.GetBalance(settings.AccountDerivation, signingKey, rootedKeyPath);
if (balanceChange == Money.Zero)
{
ModelState.AddModelError(nameof(viewModel.SeedOrKey), "This seed is unable to sign this transaction. Either the seed is incorrect, or the account path has not been properly configured in the Wallet Settings.");
return(View(viewModel));
}
psbt.SignAll(settings.AccountDerivation, signingKey, rootedKeyPath);
ModelState.Remove(nameof(viewModel.PSBT));
return(await WalletPSBTReady(walletId, psbt.ToBase64(), signingKey.GetWif(network.NBitcoinNetwork).ToString(), rootedKeyPath?.ToString()));
}
public async Task <IActionResult> SignWithSeed([ModelBinder(typeof(WalletIdModelBinder))]
WalletId walletId, SignWithSeedViewModel viewModel)
{
if (!ModelState.IsValid)
{
return(View(viewModel));
}
var network = NetworkProvider.GetNetwork <BTCPayNetwork>(walletId.CryptoCode);
if (network == null)
{
throw new FormatException("Invalid value for crypto code");
}
ExtKey extKey = viewModel.GetExtKey(network.NBitcoinNetwork);
if (extKey == null)
{
ModelState.AddModelError(nameof(viewModel.SeedOrKey),
"Seed or Key was not in a valid format. It is either the 12/24 words or starts with xprv");
}
var psbt = PSBT.Parse(viewModel.PSBT, network.NBitcoinNetwork);
if (!psbt.IsReadyToSign())
{
ModelState.AddModelError(nameof(viewModel.PSBT), "PSBT is not ready to be signed");
}
if (!ModelState.IsValid)
{
return(View(viewModel));
}
ExtKey signingKey = null;
var settings = GetDerivationSchemeSettings(walletId);
var signingKeySettings = settings.GetSigningAccountKeySettings();
if (signingKeySettings.RootFingerprint is null)
{
signingKeySettings.RootFingerprint = extKey.GetPublicKey().GetHDFingerPrint();
}
RootedKeyPath rootedKeyPath = signingKeySettings.GetRootedKeyPath();
if (rootedKeyPath == null)
{
ModelState.AddModelError(nameof(viewModel.SeedOrKey), "The master fingerprint and/or account key path of your seed are not set in the wallet settings.");
return(View(viewModel));
}
// The user gave the root key, let's try to rebase the PSBT, and derive the account private key
if (rootedKeyPath.MasterFingerprint == extKey.GetPublicKey().GetHDFingerPrint())
{
psbt.RebaseKeyPaths(signingKeySettings.AccountKey, rootedKeyPath);
signingKey = extKey.Derive(rootedKeyPath.KeyPath);
}
else
{
ModelState.AddModelError(nameof(viewModel.SeedOrKey), "The master fingerprint does not match the one set in your wallet settings. Probable cause are: wrong seed, wrong passphrase or wrong fingerprint in your wallet settings.");
return(View(viewModel));
}
var changed = PSBTChanged(psbt, () => psbt.SignAll(settings.AccountDerivation, signingKey, rootedKeyPath));
if (!changed)
{
ModelState.AddModelError(nameof(viewModel.SeedOrKey), "Impossible to sign the transaction. Probable cause: Incorrect account key path in wallet settings, PSBT already signed.");
return(View(viewModel));
}
ModelState.Remove(nameof(viewModel.PSBT));
return(await WalletPSBTReady(walletId, psbt.ToBase64(), signingKey.GetWif(network.NBitcoinNetwork).ToString(), rootedKeyPath?.ToString()));
}
public async Task <IActionResult> SignWithSeed([ModelBinder(typeof(WalletIdModelBinder))]
WalletId walletId, SignWithSeedViewModel viewModel)
{
if (!ModelState.IsValid)
{
return(View(viewModel));
}
var network = NetworkProvider.GetNetwork(walletId.CryptoCode);
if (network == null)
{
throw new FormatException("Valor no válido para el código criptográfico");
}
ExtKey extKey = viewModel.GetExtKey(network.NBitcoinNetwork);
if (extKey == null)
{
ModelState.AddModelError(nameof(viewModel.SeedOrKey),
"La seed o la clave no estaban en un formato válido. Es el 12/24 palabras o comienza con xprv");
}
var psbt = PSBT.Parse(viewModel.PSBT, network.NBitcoinNetwork);
if (!psbt.IsReadyToSign())
{
ModelState.AddModelError(nameof(viewModel.PSBT), "PSBT no está listo para ser firmado");
}
if (!ModelState.IsValid)
{
return(View(viewModel));
}
ExtKey signingKey = null;
var settings = (await GetDerivationSchemeSettings(walletId));
var signingKeySettings = settings.GetSigningAccountKeySettings();
if (signingKeySettings.RootFingerprint is null)
{
signingKeySettings.RootFingerprint = extKey.GetPublicKey().GetHDFingerPrint();
}
RootedKeyPath rootedKeyPath = signingKeySettings.GetRootedKeyPath();
// The user gave the root key, let's try to rebase the PSBT, and derive the account private key
if (rootedKeyPath?.MasterFingerprint == extKey.GetPublicKey().GetHDFingerPrint())
{
psbt.RebaseKeyPaths(signingKeySettings.AccountKey, rootedKeyPath);
signingKey = extKey.Derive(rootedKeyPath.KeyPath);
}
// The user maybe gave the account key, let's try to sign with it
else
{
signingKey = extKey;
}
var balanceChange = psbt.GetBalance(settings.AccountDerivation, signingKey, rootedKeyPath);
if (balanceChange == Money.Zero)
{
ModelState.AddModelError(nameof(viewModel.SeedOrKey), "Esta seed no parece poder firmar esta transacción. Esta es la clave incorrecta o la configuración de la cartera no tiene la ruta de cuenta correcta en la configuración de la cartera.");
return(View(viewModel));
}
psbt.SignAll(settings.AccountDerivation, signingKey, rootedKeyPath);
ModelState.Remove(nameof(viewModel.PSBT));
return(await WalletPSBTReady(walletId, psbt.ToBase64(), signingKey.GetWif(network.NBitcoinNetwork).ToString(), rootedKeyPath.ToString()));
}