encodeKey method

@override String encodeKey(List<int> pubKey)

Overrides the base class method to encode a public key as a Nano address.

Implementation

@override
String encodeKey(List<int> pubKey) {
  /// Validate and obtain the Ed25519 Blake2b public key.
  final pubKeyObj = AddrKeyValidator.validateAndGetEd25519Blake2bKey(pubKey);

  /// Extract public key bytes and calculate the checksum.
  final pubKeyBytes = pubKeyObj.compressed.sublist(1);
  final checksumBytes = _NanoAddrUtils.computeChecksum(pubKeyBytes);

  /// Create the Nano address payload by combining padding, public key, and checksum.
  final payloadBytes = [
    ...NanoAddrConst.payloadPadDec,
    ...pubKeyBytes,
    ...checksumBytes,
  ];

  /// Encode the payload using a custom Nano Base32 alphabet and prepend the Nano address prefix.
  final b32Enc = Base32Encoder.encodeNoPaddingBytes(
    payloadBytes,
    NanoAddrConst.base32Alphabet,
  );
  return AddrKeyValidator.getConfigArg(
        CoinsConf.nano.params.addrPrefix,
        "addrPrefix",
      ) +
      b32Enc.substring(NanoAddrConst.payloadPadEnc.length);
}