deriveAddress method
Implementation
Uint8List deriveAddress(String serviceName, {int index = 0}) {
if (services![serviceName] == null) {
throw "Service doesn't exist in the keychain";
}
final keyPair = deriveArchethicKeypair(
seed, services![serviceName]!.derivationPath!, index,
curve: services![serviceName]!.curve!,);
final curveID = crypto.curveToID(services![serviceName]!.curve!);
final hashedPublicKey =
crypto.hash(keyPair.publicKey, algo: services![serviceName]!.hashAlgo!);
return concatUint8List(<Uint8List>[
Uint8List.fromList(<int>[curveID]),
Uint8List.fromList(hashedPublicKey)
]);
}