toSigFromBytes static method
Implementation
static Signature toSigFromBytes(Uint8List data) {
final int l = data.length;
if (l < 2 || data[0] != 0x30) {
throw Exception('Invalid signature tag');
}
if (data[1] != l - 2) {
throw Exception('Invalid signature: incorrect length');
}
final (r, sBytes) = DER._parseInt(data.sublist(2));
final (s, rBytesLeft) = DER._parseInt(sBytes);
if (rBytesLeft.isNotEmpty) {
throw Exception('Invalid signature: left bytes after parsing');
}
return Signature(r: r, s: s);
}