Publication Details

This article was originally published as: C. Kailasanathan, R. Safavi-Naini & P. Ogunbona, 'Compression performance of JPEG encryption scheme', 14th International Conference on Digital Signal Processing, 1-3 July 2002, Vol 2, pp. 1329-1332. Copyright IEEE 2002.


Recent development in the Internet and Web based technologies require faster communication of multimedia data in a secure form. A number of encryption schemes for MPEG have been proposed. In this paper, we evaluate the compression performance of JPEG which has been encrypted with the zig-zag permutation algorithm, suggest a security enhancement to the scheme, and propose an alternative to entropy coding recommended by JPEG to compensate for the compression drop occurring due to permutation.