Anti-forensic steganography using multi-bit MER with flexible bit location

作者：Chen Rong Jian^*; Horng Shi Jinn; Huang Po Hsian

来源：International Journal of Ad Hoc and Ubiquitous Computing, 2015, 18(1-2): 54-66.

DOI：10.1504/IJAHUC.2015.067788

• steganographgy
• anti-forensics
• multi-bit embedding
• minimum-error replacement
• flexible bit location

This work develops an anti-forensic steganography system using the proposed multi-bit MERs with flexible bit location embedding method (multi-bit MER_FBL embedding method) to overcome the problem of forensics and to achieve high performance including both large embedding capacity and high image quality. The proposed multi-bit MER_FBL embedding method hides multi-bit (k-bit, k >= 1) logo/secret data into any adjoining (starting with the ith location) k-bit b(i)b(i-1)...b(i-k+1) of cover data only introduces MEE in the range of 0 to +/-(2(k) - 1) 2(i-k); moreover, its flexible bit location enhances the embedded security as security increases as the embedding location closing to the MSBs of cover data. We thus develop a thresholding mechanic to evaluate the anti-forensics degree of the proposed method. Finally, anti-forensics of the proposed steganography systems are demonstrated using the visual attack and the statistical attack of Chi-square analysis.

• 出版日期2015