Random Cladding with Feedback Mechanism for encrypting mobile messages

In mobile communication, messages are delivered via the air. This may attract hackers to eavesdrop and then break them. Hence, the security is an important issue needed to be addressed. Advanced Standard Encryption (AES) is currently a frequently used encryption approach. However, AES will be insecure in the near future since it has been partially solved. Therefore, in this paper, we present a security system, named Random Cladding with Feedback Mechanism encryption method (RCFM for short), which uses the password key or the channel key entered by a underlying user as the initial encryption key, and adopts a dynamically accumulated shifting substitution technique together with a Two-Dimensional Operation encryption method to produce a sub-keys group. It also retrieves the current time parameters and random number keys as dynamic parameters to perform a cladded feedback encryption. Through theoretic analysis and computer simulations, the RCFM demonstrates practical security in network communications.