Method for secure exchange of data between client and server in communication system, involves generating cryptographic key, and deriving cryptographic key over function to key, where derived key is integrated in authentication protocol

摘要

The method involves generating a cryptographic key (k) according to a key agreement protocol (SP). The cryptographic key is derived over a function to a key (dk), where the derived key is integrated in an authentication protocol (AP). The derived key is added to a random number, and a derived random number is generated according to a specific relationship. The random number is integrated in the authentication protocol, where the random number represents computation specification. Another random number is transmitted to a party (A) from another party (B) for authenticating the former party. An independent claim is also included for a communication system for secure exchange of data between two parties.