DATA ENCRYPTION METHOD AND APPARATUS

摘要

A method and apparatus of encrypting data for transmission between first 1 and second 2 communication terminals in which information relating to a time at which a message sent from the first terminal is expected to arrive at the second terminal is determined by an exchange of messages between the first and second terminals. The data is encrypted at the first terminal using the determined information and is transmitted to the second terminal, where it is decrypted based on its actual arrival time.