encodeKey method

  1. @override
String encodeKey(
  1. List<int> pubKey, [
  2. Map<String, dynamic> kwargs = const {}
])
override

Blockchain address encoder for Ada Shelley staking addresses. This encoder is used to create staking addresses based on the network tag and public key.

Implementation

@override
String encodeKey(List<int> pubKey, [Map<String, dynamic> kwargs = const {}]) {
  /// Determine the network tag, defaulting to mainnet if not specified.
  final netTag = kwargs["net_tag"] ?? AdaShelleyAddrNetworkTags.mainnet;

  /// Check if the provided network tag is a valid enum value.
  if (netTag is! AdaShelleyAddrNetworkTags) {
    throw ArgumentException(
        'Address type is not an enumerative of AdaShelleyAddrNetworkTags');
  }

  /// Validate and get the Ed25519 public key object from the provided bytes.
  final pubKeyObj = AddrKeyValidator.validateAndGetEd25519Key(pubKey);

  /// Compute the public key hash based on the compressed key bytes.
  final pubKeyHash =
      _AdaShelleyAddrUtils.keyHash(pubKeyObj.compressed.sublist(1));

  /// Encode the address prefix based on the reward header type and network tag.
  final firstByte = _AdaShelleyAddrUtils.encodePrefix(
      AdaShelleyAddrHeaderTypes.reward, netTag.value);

  /// Generate the staking address using Bech32 encoding with the appropriate HRP.
  return Bech32Encoder.encode(
      AdaShelleyAddrConst.networkTagToRewardAddrHrp[netTag]!,
      List<int>.from([...firstByte, ...pubKeyHash]));
}