/// <summary>
/// Gets the signed transaction data from the Ledger wallet.
/// </summary>
/// <param name="transaction"> The transaction to sign. </param>
/// <param name="path"> The path of the address to sign the transaction with. </param>
/// <param name="onSignatureRequestSent"> Action to call once the signature request has been sent. </param>
/// <returns> Task returning the SignedTransactionDataHolder instance. </returns>
protected override async Task <SignedTransactionDataHolder> GetSignedTransactionData(Transaction transaction, string path, Action onSignatureRequestSent)
{
var ledgerManager = LedgerConnector.GetWindowsConnectedLedger();
var address = ledgerManager == null
? null
: (await ledgerManager.GetPublicKeyResponse(Wallet.ELECTRUM_LEDGER_PATH.Replace("x", "0"), false, false).ConfigureAwait(false))?.Address;
// Don't sign transaction if app is not Ethereum, or if the first address doesn't match the first address of the opened Ledger wallet.
if (string.IsNullOrEmpty(address) || !address.EqualsIgnoreCase(addresses[1][0]))
{
return(null);
}
var addressIndex = path.Count(c => c == '/') - 1;
var derivationData = Helpers.GetDerivationPathData(path);
var request = new EthereumAppSignTransactionRequest(derivationData.Concat(transaction.GetRLPEncoded()).ToArray());
onSignatureRequestSent?.Invoke();
var response = await ledgerManager.SendRequestAsync <EthereumAppSignTransactionResponse, EthereumAppSignTransactionRequest>(request).ConfigureAwait(false);
if (!response.IsSuccess)
{
return(new SignedTransactionDataHolder());
}
return(new SignedTransactionDataHolder {
signed = true, v = response.SignatureV, r = response.SignatureR, s = response.SignatureS
});
}
/// <summary>
/// Gets the public key data from the Ledger wallet.
/// </summary>
/// <returns> Task returning the ExtendedPublicKeyDataHolder instance. </returns>
protected override async Task <ExtendedPublicKeyDataHolder> GetExtendedPublicKeyData()
{
var ledgerManager = LedgerConnector.GetWindowsConnectedLedger();
if (ledgerManager == null)
{
return(null);
}
var pubKeyResponse = await ledgerManager.GetPublicKeyResponse(EXTENDED_PUBLIC_KEY_PATH, true, false).ConfigureAwait(false);
if (pubKeyResponse?.IsSuccess != true)
{
return(null);
}
return(new ExtendedPublicKeyDataHolder {
publicKeyData = pubKeyResponse.PublicKeyData, chainCodeData = pubKeyResponse.ExtraData.Take(32).ToArray()
});
}
