Method: Themis::Ssession#wrap

Defined in:

lib/rbthemis.rb

#wrap(message) ⇒ Object

# File 'lib/rbthemis.rb', line 373

def wrap(message)
  message_, message_length_ = string_to_pointer_size(message)

  wrapped_message_length = FFI::MemoryPointer.new(:uint)
  res = secure_session_wrap(
    @session, message_, message_length_, nil, wrapped_message_length)
  if res != BUFFER_TOO_SMALL
    raise ThemisError, "Secure Session failed encrypting: #{res}"
  end

  wrapped_message = FFI::MemoryPointer.new(
    :char, wrapped_message_length.read_uint)
  res = secure_session_wrap(@session, message_, message_length_,
                            wrapped_message, wrapped_message_length)
  if res != SUCCESS && res != SEND_AS_IS
    raise ThemisError, "Secure Session failed encrypting: #{res}"
  end

  wrapped_message.get_bytes(0, wrapped_message_length.read_uint)
end