A Chaotic Real-time Cryptosystem using a Switching Algorithmic-based Linear Congruential Generator (SLCG)

摘要

In order to increase the security level of the existing secure communication techniques used on top of a non-guarantee protocol like RTP, a chaotic real-time cryptosystem using Linear Congruential Generator with Switching Algorithm (SLCG) was introduced. This cryptosystem applied the technique of Chaos Theory for data synchronization during real-time data encryption and decryption. SLCG, as compared to traditional chaos generator such as Logistic Equation (LE), showed a promising result in terms of computation time, trajectory distribution and key length. In summary, the proposed cryptosystem saved about 16% in term of the total time for real-time data encryption and decryption. Besides, its trajectory distribution can be varied with respect to the changing key. This new cryptosystem increases the number of chaotic equations used and shows a significant improvement in terms of data encryption (and decryption) efficiency as well as security level