decrypt method

@override Future<Try<ByteData, LcpException>> decrypt(ByteData data)

Decrypts the given data encrypted with the license's content key.

Implementation

@override
Future<Try<ByteData, LcpException>> decrypt(ByteData data) async {
  try {
    // LCP lib crashes if we call decrypt on an empty ByteArray
    if (data.lengthInBytes == 0) {
      return Try.success(ByteData(0));
    } else {
      DrmContext context = _documents.getContext();
      ByteData decryptedData = _lcpClient.decrypt(context, data);
      return Try.success(decryptedData);
    }
  } on Exception catch (e) {
    return Try.failure(LcpException.wrap(e));
  }
}