• Naga sudha

Image encryption can be defined in such a way that it is the process of encoding secret image with the help of some encryption algorithm in such a way that unauthorized users can't access it. To send an image over the network secretly, the sender tries to find encryption algorithm to hide image information. In this paper t aims at designing an efficient encryption algorithm for color image using random image key generated with minimum time execution for encryption and decryption operations. XOR operation is used here to make more diffusion of the encrypted image to maintain a higher level of security upon transference than it is with the original image. In this paper introduces a new concept for image encryption using a binary “key-image”. The key-image is either a bit plane or an edge map generated from another image, which has the same size as the original image to be encrypted. In addition, we introduce two new lossless image encryption algorithms using this key image technique. The performance of these algorithms is discussed against common attacks such as the brute force attack, ciphertext attacks and plaintext attacks. The analysis and experimental results show that the proposed algorithms can fully encrypt all types of images. This makes them suitable for securing multimedia applications and shows they have the potential to be used to secure communications in a variety of wired/wireless scenarios and real-time application such as mobile phone services.

"FAST IMAGE ENCRYPTION BASED ON RANDOM IMAGE KEY", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 5, page no.a741-a746, May-2021, Available :http://www.jetir.org/papers/JETIR2105095.pdf

"FAST IMAGE ENCRYPTION BASED ON RANDOM IMAGE KEY", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 5, page no. ppa741-a746, May-2021, Available at : http://www.jetir.org/papers/JETIR2105095.pdf