Chaos has been one of the most effective cryptographic sources since it was first used in
image-encryption algorithms. This paper closely examines the development process of …

Nowadays, security in data transfer is of special importance. Images are of the most
attractive kinds of data in the encryption domain. Color images are more attractive than the …

The number of changing pixel rate (NPCR) and the unified averaged changed intensity
(UACI) are two most common quantities used to evaluate the strength of image encryption …

Image encryption has been an attractive research field in recent years. The chaos-based
cryptographic algorithms have suggested some new and efficient ways to develop secure …

In recent years, a variety of chaos-based digital image encryption algorithms have been
suggested. Most of these algorithms implement permutations and diffusions at the pixel level …

In this paper we propose a new image randomness measure using Shannon entropy over
local image blocks. The proposed local Shannon entropy measure overcomes several …

For a linear image encryption system, it is vulnerable to the chosen-plaintext attack. To
overcome the weakness and reduce the correlation among pixels of the encryption image …

This Letter presents a new image encryption scheme, which employs an image total
shuffling matrix to shuffle the positions of image pixels and then uses a hyper-chaotic system …

The propagation of information over insecure communication system is one of the most
important aspect of digitally advance era. The electronic information is travels in form of …

Over the past years, an enormous variety of different chaos-based image and video
encryption algorithms have been proposed and published. While any algorithm published …