signString method

Future<Signature> signString(
  1. String message
)

Signs a string.

The string is converted to bytes using utf8 codec.

Example

import 'package:cryptography/cryptography.dart';

Future<void> main() async {
  final signedMessage = 'Hello, world!';

  final ed25519 = Ed25519();
  final wand = await ed25519.newKeyExchangeWand();
  final signature = await wand.signString(signedMessage);

  print('Signature: ${signature.bytes}');
  print('Public key: ${signature.publicKey}');
}

Implementation

Future<Signature> signString(String message) async {
  final bytes = utf8.encode(message);
  final signature = await sign(bytes);
  return signature;
}