sign method

Future<SignedTransaction> sign(Account account)

Sign the transaction with the given account.

If the SK's corresponding address is different than the txn sender's, the SK's corresponding address will be assigned as AuthAddr.

Implementation

Future<SignedTransaction> sign(Account account) async {
  // Get the encoded transaction
  final encodedTransaction = getEncodedTransaction();

  // Sign the transaction with secret key
  final signature = await Ed25519().sign(
    encodedTransaction,
    keyPair: account.keyPair,
  );

  // Create the signed transaction with signature
  final signedTransaction = SignedTransaction(
    signature: Uint8List.fromList(signature.bytes),
    transaction: this,
  );

  // Set the auth address
  if (sender != account.address) {
    signedTransaction.authAddress = account.address;
  }

  return signedTransaction;
}