encodeKey method

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

Overrides the base class method to encode a public key as an ICON (ICX) address.

This method encodes a public key as an ICON address. It expects the public key as a List

  1. Validating and transforming the public key into a 32-byte hash.
  2. Truncating the hash to the required ICON address length.
  3. Adding the ICON address prefix to the hash.

Parameters:

  • pubKey: The public key to be encoded as an ICON address in the form of a List
  • kwargs: Optional keyword arguments (not used in this implementation).

Returns: A string representing the ICON (ICX) address corresponding to the provided public key.

Implementation

@override
String encodeKey(List<int> pubKey, [Map<String, dynamic> kwargs = const {}]) {
  /// Validate and transform the public key into a 32-byte hash.
  final IPublicKey pubKeyObj =
      AddrKeyValidator.validateAndGetSecp256k1Key(pubKey);
  List<int> pubKeyHashBytes =
      QuickCrypto.sha3256Hash(pubKeyObj.uncompressed.sublist(1));

  /// Truncate the hash to the required ICON address length.
  pubKeyHashBytes = pubKeyHashBytes
      .sublist(pubKeyHashBytes.length - IcxAddrConst.keyHashByteLen);

  /// Add the ICON address prefix to the hash.
  return CoinsConf.icon.params.addrPrefix! +
      BytesUtils.toHexString(pubKeyHashBytes);
}