Design and Implementation of Encryption Algorithm Based on Double Chaotic System

In order to increase the security of chaos-based encryption algorithm while not affecting the performance,two chaotic secret-key sequences are generated based on the Logistic map and the tent map,which is used to encrypt text sequences.Using the compound chaos system that makes up of Logistic mapping and tent,its iterative process not only possesses sensitivity to the initial condition,but also possesses the flexibility of selection iterate function according to the multiplexed sequence,and is the ideal tool constituting the password system.The result shows that the algorithm has numerous key space,good security features and better performance.