ClSignature.fromHex constructor
ClSignature.fromHex(
- String hexStr
Creates a ClSignature object from a hexadecimal string representation.
The hexadecimal string is prefixed with keyAlgorithm.identifierByteHex
.
Implementation
factory ClSignature.fromHex(String hexStr) {
final Tuple2<Cep57ChecksumResult, Uint8List> decoded = Cep57Checksum.decode(hexStr.substring(2));
if (decoded.item1 == Cep57ChecksumResult.invalid) {
throw ArgumentError('Signature checksum verification failed');
}
final Uint8List bytes = decoded.item2;
KeyAlgorithm algorithm = KeyAlgorithmExt.fromIdentifierByte(hexStringToInt(hexStr.substring(0, 2)));
return ClSignature.fromBytes(bytes, algorithm);
}