Image encryption approach based on chaotic map patterns

This paper proposes a new image encryption approach based on chaotic map pattern.By the idea of SCAN pattern the paper takes the left map and right map of five chaotic maps as ten patterns.Those patterns can be used in image encryption.Here the types.of the patterns are used as the keys.Simulation shows that the image encryption approach has fast encryption speed and high security.The approach solves the limit between the keys and the size of image when enerypting image by chaotic map.At the same time it also solves the limit of the size of image required by SCAN pattern.It is a promising encryption technology.