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Title: Observing Bag Gain in JPEG Batch Steganography
The bag gain relates to a gain in security due to spreading payload among multiple covers when the steganog- rapher maintains a positive communication rate. This gain is maximal for a certain optimal bag size, which depends on the embedding method, payload spreading strategy, communication rate, and the cover source. Originally discovered and analyzed in the spatial domain, in this paper we study this phenomenon for JPEG images across quality factors. Our experiments and theoretical analysis indicate that the bag gain is more pronounced for higher JPEG qualities, more aggressive batch senders, and for senders maintaining a fixed payload per bag in terms of bits per DCT rather than per non-zero AC DCT.  more » « less
Award ID(s):
2028119
PAR ID:
10451150
Author(s) / Creator(s):
;
Date Published:
Journal Name:
IEEE Workshop on Information Security and Forensics
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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