Title
Explicit Optimization of min max Steganographic Game
Abstract
This article proposes an algorithm which allows Alice to simulate the game played between her and Eve. Under the condition that the set of detectors that Alice assumes Eve to have is sufficiently rich (e.g. CNNs), and that she has an algorithm enabling to avoid detection by a single classifier (e.g adversarial embedding, gibbs sampler, dynamic STCs), the proposed algorithm converges to an efficient steganographic algorithm. This is possible by using a min max strategy which consists at each iteration in selecting the least detectable stego image for the best classifier among the set of Eve's learned classifiers. The algorithm is extensively evaluated and compared to prior arts and results show the potential to increase the practical security of classical steganographic methods. For example the error probability Perr of XU-Net on detecting stego images with payload of 0.4 bpnzAC embedded by J-Uniward and QF 75 starts at 7.1% and is increased by +13.6% to reach 20.7% after eight iterations. For the same embedding rate and for QF 95, undetectability by XU-Net with J-Uniward embedding is 23.4%, and it jumps by +25.8% to reach 49.2% at iteration 3.
Year
DOI
Venue
2021
10.1109/TIFS.2020.3021913
IEEE Transactions on Information Forensics and Security
Keywords
DocType
Volume
Steganography,steganalysis,game theory,distortion function
Journal
16
ISSN
Citations 
PageRank 
1556-6013
3
0.36
References 
Authors
0
4
Name
Order
Citations
PageRank
Solene Bernard130.36
Patrick Bas274230.95
John Klein37710.14
Tomás Pevný4335.65