module IPCrypt
  class InvalidIPv4Error < Exception
    def initialize(ip)
      super "Invalid IPv4 address: #{ip}"
    end
  end
  class InvalidKeyTypeError < Exception
    def initialize(key, type)
      super "Expected key '#{key}' to be a String, got #{type}"
    end
  end
  class InvalidKeyBytesError < Exception
    def initialize(key, bytes)
      super "Expected key '#{key}' to be 16-byte, got #{bytes} byte#{bytes == 1 ? '' : ?s}"
    end
  end
end