sign method
Signs this Transaction with the specified signers. Multiple signatures may be applied to a Transaction. The first signature is considered "primary" and is used to identify and confirm transactions.
Implementation
void sign(final List<Signer> signers) {
final Uint8List serializedMessage = message.serialize().asUint8List();
final int numRequiredSignatures = message.header.numRequiredSignatures;
final List<Pubkey> signerPubkeys =
message.accountKeys.sublist(0, numRequiredSignatures);
for (final Signer signer in signers) {
final int signerIndex = signerPubkeys.indexOf(signer.pubkey);
check(signerIndex >= 0, 'Unknown transaction signer.');
signatures[signerIndex] =
nacl.sign.detached.sync(serializedMessage, signer.seckey);
}
}