module Rack::Session::Encryptor::Serializable

# File lib/rack/session/encryptor.rb, line 45
def deserialized_message(data)
  # Read the first 2 bytes as the padding_bytes size
  padding_bytes, = data.unpack('v')

  # Slice out the serialized_data and deserialize it
  serialized_data = data.slice(2 + padding_bytes, data.bytesize)
  serializer.load serialized_data
end

# File lib/rack/session/encryptor.rb, line 32
def serialize_payload(message)
  serialized_data = serializer.dump(message)

  return "#{[0].pack('v')}#{serialized_data.force_encoding(Encoding::BINARY)}" if @options[:pad_size].nil?

  padding_bytes = @options[:pad_size] - (2 + serialized_data.size) % @options[:pad_size]
  padding_data = SecureRandom.random_bytes(padding_bytes)

  "#{[padding_bytes].pack('v')}#{padding_data}#{serialized_data.force_encoding(Encoding::BINARY)}"
end

# File lib/rack/session/encryptor.rb, line 54
def serializer
  @serializer ||= @options[:serialize_json] ? JSON : Marshal
end