Method for managing secure data transmission between mobile phone and server in communication system, involves encrypting data, by mobile phone, using advanced encryption standard algorithm implemented with secret encryption key

摘要

The method involves encrypting data, by a mobile phone (10) during a usage phase of a communication session, using an advanced encryption standard (AES) algorithm implemented with a secret encryption key, and transmitting a short message service (SMS) message containing the encrypted data to a server (20). A portion of the encryption key associated with the mobile phone is obtained during an activation phase of the session. Another portion of the encryption key is generated in a pseudo-random manner, where the secret encryption key is built based on the portions of the encryption key.