/// <summary>
/// Signs the aggregate transaction with cosigners.
/// </summary>
/// <param name="initiatorAccount">The initiator account.</param>
/// <param name="cosignatories">The cosignatories.</param>
/// <returns>SignedTransaction.</returns>
/// <exception cref="ArgumentNullException">
/// initiatorAccount
/// or
/// cosignatories
/// </exception>
public SignedTransaction SignWithAggregateCosigners(KeyPair initiatorAccount, List <Account> cosignatories)
{
if (initiatorAccount == null)
{
throw new ArgumentNullException(nameof(initiatorAccount));
}
if (cosignatories == null)
{
throw new ArgumentNullException(nameof(cosignatories));
}
var signedTransaction = SignWith(initiatorAccount);
var payload = signedTransaction.Payload.FromHex();
foreach (var cosignatory in cosignatories)
{
var bytes = signedTransaction.Hash.FromHex();
var signatureBytes = TransactionExtensions.SignHash(cosignatory.KeyPair, bytes);
payload = payload.Concat(cosignatory.KeyPair.PublicKey.Concat(signatureBytes)).ToArray();
Cosignatures.Add(new AggregateTransactionCosignature(signatureBytes.ToHexLower(), new PublicAccount(cosignatory.KeyPair.PublicKey.ToHexLower(), Blockchain.NetworkType.Types.MIJIN_TEST)));
}
payload = BitConverter.GetBytes(payload.Length).Concat(payload.Take(4, payload.Length - 4).ToArray()).ToArray();
return(SignedTransaction.Create(payload, signedTransaction.Hash.FromHex(), initiatorAccount.PublicKey, TransactionType));
}
/// <summary>
/// Generates the hash for a serialized transaction payload.
/// </summary>
/// <param name="transactionPayload">The transaction payload in hex format.</param>
/// <returns>The hash in hex format.</returns>
public static string CreateTransactionHash(string transactionPayload)
{
if (transactionPayload == null)
{
throw new ArgumentNullException(nameof(transactionPayload));
}
return(TransactionExtensions.Hasher(transactionPayload.FromHex()).ToHexUpper());
}
/// <summary>
/// Sign the transaction with a given account.
/// </summary>
/// <param name="account">The account.</param>
/// <returns>CosignatureSignedTransactionDTO.</returns>
/// <exception cref="ArgumentNullException">account</exception>
public CosignatureSignedTransactionDTO SignWith(KeyPair account)
{
if (account == null)
{
throw new ArgumentNullException(nameof(account));
}
var bytes = Hash.FromHex();
var signatureBytes = TransactionExtensions.SignHash(account, bytes);
return(new CosignatureSignedTransactionDTO {
ParentHash = Hash, Signature = signatureBytes.ToHexLower(), Signer = account.PublicKeyString
});
}
/// <summary>
/// Signs the transaction with the given <see cref="KeyPair"/>.
/// </summary>
/// <param name="keyPair">The <see cref="KeyPair"/>.</param>
/// <returns><see cref="SignedTransaction"/>.</returns>
/// <exception cref="ArgumentNullException">keyPair</exception>
public SignedTransaction SignWith(KeyPair keyPair)
{
if (keyPair == null)
{
throw new ArgumentNullException(nameof(keyPair));
}
Signer = PublicAccount.CreateFromPublicKey(keyPair.PublicKeyString, NetworkType);
Bytes = GenerateBytes();
var sig = TransactionExtensions.SignTransaction(keyPair, Bytes);
var signedBuffer = Bytes.Take(4)
.Concat(sig)
.Concat(keyPair.PublicKey)
.Concat(
Bytes.Take(4 + 64 + 32, Bytes.Length - (4 + 64 + 32))
).ToArray();
return(SignedTransaction.Create(signedBuffer, TransactionExtensions.Hasher(signedBuffer), keyPair.PublicKey, TransactionType));
}
