SchnorrkelSecretKey.fromEd25519 constructor

SchnorrkelSecretKey.fromEd25519(
  1. List<int> secretKeyBytes
)

Creates a SchnorrkelSecretKey instance from a byte representation of an Ed25519 secret key.

Parameters:

  • secretKeyBytes: A byte array representing an Ed25519 secret key.

Returns: A SchnorrkelSecretKey instance derived from the provided Ed25519 secret key representation.

Throws:

  • An ArgumentException if the byte array does not have the correct length for a secret key.

Implementation

factory SchnorrkelSecretKey.fromEd25519(List<int> secretKeyBytes) {
  _KeyUtils._checkKeysBytes(
      secretKeyBytes, SchnorrkelKeyCost.secretKeyLength, "secret key");
  final newKey = List<int>.from(
      secretKeyBytes.sublist(0, SchnorrkelKeyCost.miniSecretLength));
  _KeyUtils.divideScalarByCofactor(newKey);
  return SchnorrkelSecretKey(
      BytesUtils.toBytes(newKey, unmodifiable: true),
      BytesUtils.toBytes(
          secretKeyBytes.sublist(SchnorrkelKeyCost.miniSecretLength,
              SchnorrkelKeyCost.secretKeyLength),
          unmodifiable: true));
}