/// <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 SignTransactionWithCosigners(Account initiatorAccount, List <Account> cosignatories, string generationHash) { if (initiatorAccount == null) { throw new ArgumentNullException(nameof(initiatorAccount)); } if (cosignatories == null) { throw new ArgumentNullException(nameof(cosignatories)); } var signedTransaction = SignWith(initiatorAccount, generationHash); 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(), initiatorAccount.Address.NetworkType))); } payload = BitConverter.GetBytes(payload.Length).Concat(payload.Take(4, payload.Length - 4).ToArray()) .ToArray(); return(SignedTransaction.Create(payload, signedTransaction.Hash.FromHex(), initiatorAccount.PublicKey.FromHex(), TransactionType, initiatorAccount.Address.NetworkType)); }
public CosignatureSignedTransaction SignWith(Account account) { if (account == null) { throw new ArgumentNullException(nameof(account)); } var bytes = TransactionToCosign.TransactionInfo.Hash.FromHex(); var signatureBytes = TransactionExtensions.SignHash(account.KeyPair, bytes); return(new CosignatureSignedTransaction(TransactionToCosign.TransactionInfo.Hash, signatureBytes.ToHexLower(), account.PublicKey)); }