Time analysis of chaotic cryptosystem using external key with diverse chaotic maps

In recent years, external key was introduced to chaotic cryptography and find its application in several discrete chaotic cryptosystems .The first part of this paper shows the better chaotic cryptosystem with external key. Then, we have given the classification of chaotic maps on the basis of their space dimensions. The maps functional on the chaotic cryptosystem are one space dimension maps. In this paper time analysis of the enhanced cryptosystem based on the three chaotic maps is prepared. Simulation results shows how a single chaotic cryptosystem results different Encryption/Decryption time when we made change in the type of chaotic map.