Image compression and image encryption are pivotal to proper storage and transmission of images over MANET. Simultaneous image compression and encryption aims at achieving enhanced bandwidth utilization and security at the same time. The Number Theory based Image Compression and Quasigroup Encryption (NTICQE) algorithm employs number theoretic paradigm Chinese Remainder Theorem and Quasigroup E...

7 Abstract: The primary goal of this paper is security management. This will provide authentication of users, and integrity, accuracy and safety of images which is traveling over internet. Moreover, an image-based data requires more effort during encryption and decryption. The Proposed Architecture for encryption and decryption of an image using suitable userdefined key is developed with the sa...

Received Feb 26, 2014 Revised May 15, 2014 Accepted May 20, 2014 Image information security plays a vital role in computing and communication technologies. This paper describes a new concept of expand and shrink to enhance the strength of chaos based image encryption technique. This method consists of both permutations as well as substitution process for image scrambling and encryption. In perm...

In present days safeguarding information, in form of images is very important, and it is done by various ways. Certain security analysis tests are done to find out the quality of image encryption algorithms to produce encrypted image from original image. Keywords— Differential analysis, Encryption quality performance, Features of image encryption, Information entropy analysis, Key space analysi...

In today’s internet world where nothing is secure, since the communication by transmitting of digital products over the open network occur very frequently the security of information is very important. Everyday so many techniques are evolving to make message and image secure with high rate of security. Some of the encryption techniques used selective part of an image for encryption and some oth...

Many professional image databases contain a large number of similar images, which may be stored as a representative image and the differences between the originals and the average. To reduce the heavy computation load of encryption, there are two choices of partial/selective encryption. One is to encrypt a small percentage of every image. The other is to encrypt the average image partially and ...

Image encryption plays an important role in the field of information security. Most of the image encryption techniques have some security and performance issues. So there is a need to compare them to determine which method is suitable for the application. Chaos based encryption algorithms are employed nowadays because of their better security and performance aspects. Chaotic behavior of a syste...

Information security is a fast growing research field which includes numerous problems in it. Partial image encryption is one of the important problems in the field of image information security. This paper describes the partial image encryption in two ways using hill cipher technique. First encryption technique uses two slightly different keys to construct two self-invertible matrices, which a...

DNA computing based image encryption is a new, promising field. In this paper, we propose a novel image encryption scheme based on DNA encoding and spatiotemporal chaos. In particular, after the plain image is primarily diffused with the bitwise Exclusive-OR operation, the DNA mapping rule is introduced to encode the diffused image. In order to enhance the encryption, the spatiotemporal chaotic...