LAUSR

With the massive use of images over the Internet, the security of some of them has become critical. One of the most used encryption algorithms is AES. Although this algorithm provides high security for text data, it is not suitable for images in view of their characteristics including correlation and redundancy. To have a more suitable and efficient algorithm for the encryption of images, we have deeply studied the features of this kind of data as well as the weaknesses of the well-known cryptosystems designed for images. In addition, we have examined the common building blocks used in the design of a “good” image cipher. Based on this analysis, we propose some recommendations to construct a well-secured and efficient cryptosystem for images that can be easily extended or adapted to video streams.