Vorrichtung und Verfahren zum Konvertieren einer ersten Nachricht in eine zweite Nachricht

摘要

The device has a key establishing unit (14) establishing an auxiliary public key that combines with a private key to form keys of an asymmetric encryption system. Message difference establishing unit (16) creates a difference between a ciphered message and a result of conversion of an auxiliary message using the public key. A message establishing unit (18) produces a deciphered message from the difference and the auxiliary message. - Independent claims are also included for the following: - (A) a message converting process - (B) a computer program having program codes for executing a message converting method.