Summary
the 2014 International Symposium on Nonlinear Theory and its Applications
2014
Session Number:C1L-A
Session:
Number:C1L-A5
Self-adaptive Encryption of JPEG Color Image Based on Chaotic Random Sequence
Di Xiao, Tao Xiang, Yijun Xie, Yong Wang,
pp.397-400
Publication Date:2014/9/14
Online ISSN:2188-5079
Summary:
By integrating JPEG compression and the idea of self-adaptive encryption, a self-adaptive encryption algorithm for JPEG color image is proposed. DC coefficients and the first sixteen AC coefficients in Zig-Zag order of JPEG compression are chosen to construct the corresponding matrixes. Based on chaotic random sequence, self-adaptive encryption scheme is utilized to encrypt the coefficient matrixes, and the signs of DC coefficients are also encrypted to avoid color information leaking. Experimental results and theoretical analyses demonstrate that the security of the proposed algorithm and its performance are both good, and the impact on the compression is negligible. Furthermore, it is compliant with JPEG file format.