encodeKey method

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

Overrides the base class method to encode a public key as a P2PKH (Pay-to-Public-Key-Hash) address using bch Bech32 encoding.

This method encodes a public key as a P2PKH address using Bech32 encoding. It expects an optional map of keyword arguments with 'net_ver' specifying the network version bytes and 'hrp' for the Human-Readable Part (HRP). It validates the arguments, processes the public key as a Secp256k1 key, generates a hash160 of the compressed public key, and encodes it as a P2PKH address using Bech32.

Parameters:

• pubKey: The public key to be encoded as a P2PKH address.
• kwargs: Optional keyword arguments with 'net_ver' for the network version and 'hrp' for HRP.

Returns: A String representing the Bech32-encoded P2PKH address derived from the provided public key.

Implementation

@override
String encodeKey(List<int> pubKey, [Map<String, dynamic> kwargs = const {}]) {
  /// Validate network version and HRP arguments.
  AddrKeyValidator.validateAddressArgs<List<int>>(kwargs, "net_ver");
  AddrKeyValidator.validateAddressArgs<String>(kwargs, "hrp");
  String hrp = kwargs['hrp'];
  List<int> netVerBytes = kwargs['net_ver'];

  /// Validate and process the public key as a Secp256k1 key.
  final pubKeyObj = AddrKeyValidator.validateAndGetSecp256k1Key(pubKey);

  // Generate the hash160 of the compressed public key.
  final pubkeyHash = QuickCrypto.hash160(pubKeyObj.compressed);

  /// Encode the P2PKH address using Bech32 encoding.
  return BchBech32Encoder.encode(
    hrp,
    netVerBytes,
    pubkeyHash,
  );
}