TJ-ACA: An Advanced Cryptographic Algorithm for Color Images using Ikeda Mapping
| ||International Journal of Computer Trends and Technology (IJCTT)|| |
|© - May Issue 2013 by IJCTT Journal|
|Volume-4 Issue-5 |
|Year of Publication : 2013|
|Authors :Taranjit Kaur, Reecha Sharma|
Taranjit Kaur, Reecha Sharma "TJ-ACA: An Advanced Cryptographic Algorithm for Color Images using Ikeda Mapping"International Journal of Computer Trends and Technology (IJCTT),V4(5):1295-1300 May Issue 2013 .ISSN 2231-2803.www.ijcttjournal.org. Published by Seventh Sense Research Group.
Abstract: - Presently, cryptography of images is of high concern due to highly confidential information contained in it. Image encryption is difficult as compared to text encryption because of high correlation among pixels and bulk information capacity. A newly proposed algorithm based on symmetric key algorithm, TJ-ACA, an advanced cryptographic algorithm will make use of pixel position alteration, and pixel intensity surrogation through which a visually changed image i.e. encrypted image is obtained. In this algorithm, ikeda mapping and various methods are used to get highly secure image. To increase the security ikeda mapping is done at five different values instead of single value. This proposed algorithm is applicable for color images and also for images on which steganography has been applied and by this method we get lossless decrypted image. This method resists Brute Force attack. TJ-ACA can be applied to all sizes images which can be used in medical, aerial application.
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Keywords — Ikeda mapping, image Cryptography, pixel intensity surrogation, statistical analysis.