Keypair.fromSeckeySync constructor

Keypair.fromSeckeySync(
  1. Uint8List seckey, {
  2. bool skipValidation = false,
})

Creates a Keypair from a seckey byte array.

This method should only be used to recreate a keypair from a previously generated seckey. Generating keypairs from a random seed should be done with the Keypair.fromSeedSync method.

Throws a KeypairException for invalid seckeys that do not pass validation.

Implementation

factory Keypair.fromSeckeySync(
  final Uint8List seckey, {
  final bool skipValidation = false,
}) {
  final Ed25519Keypair keypair = nacl.sign.keypair.fromSeckeySync(seckey);
  if (!skipValidation) {
    const String message = 'solana/web3.dart';
    final Uint8List signData = Uint8List.fromList(utf8.encode(message));
    final Uint8List signature = nacl.sign.detached.sync(
      signData,
      keypair.seckey,
    );
    if (!nacl.sign.detached.verifySync(signData, signature, keypair.pubkey)) {
      throw const KeypairException('Invalid secret key.');
    }
  }
  return Keypair(keypair);
}