verifyString method
Verifies whether a string was signed with signature
.
The string is converted to bytes using utf8 codec.
Example
In this example, we use Ed25519:
import 'package:cryptography/cryptography.dart';
Future<void> main() async {
final signedMessage = 'Hello, world!';
final ed25519 = Ed25519();
final keyPair = await ed25519.newKeyPair();
final signature = await ed25519.signString(
signedMessage,
keyPair: keyPair,
);
// ...
final isRealSignature = await ed25519.verifyString(
signedMessage,
signature: signature,
);
print('Signature verification result: $isRealSignature');
}
Implementation
Future<bool> verifyString(String message, {required Signature signature}) {
return verify(
utf8.encode(message),
signature: signature,
);
}