Titre :

Effect of JPEG Quality on Steganographic Security

Auteur(s) :

Butora, Jan [Auteur]
Centre de Recherche en Informatique, Signal et Automatique de Lille - UMR 9189 [CRIStAL]
Fridrich, Jessica [Auteur]
Binghamton University [SUNY]

Éditeur(s) ou directeur(s) scientifique(s) :

Rémi Cogranne
Luisa Verdoliva
Siwei Lyu
J uan Pastoriza
Xinpeng Zhang

Titre de la manifestation scientifique :

IH&MMSec '19: ACM Information Hiding and Multimedia Security Workshop

Ville :

Paris

Pays :

France

Date de début de la manifestation scientifique :

2019-07-03

Titre de l’ouvrage :

IH&MMSec'19: Proceedings of the ACM Workshop on Information Hiding and Multimedia Security

Éditeur :

ACM

Date de publication :

2019-07-02

Mot(s)-clé(s) en anglais :

Steganography
Steganalysis
JPEG
quality factor
generalized Gaussian

Discipline(s) HAL :

Informatique [cs]/Cryptographie et sécurité [cs.CR]
Informatique [cs]/Traitement des images [eess.IV]

Résumé en anglais : [en]

This work investigates both theoretically and experimentally the security of JPEG steganography as a function of the quality factor. For a fixed relative payload, modern embedding schemes, such as J-UNIWARD and UED-JC, ...
Lire la suite >This work investigates both theoretically and experimentally the security of JPEG steganography as a function of the quality factor. For a fixed relative payload, modern embedding schemes, such as J-UNIWARD and UED-JC, exhibit surprising non-monotone trends due to rounding and clipping of quantization steps. Their security generally increases with increasing quality factor but starts decreasing for qualities above 95. In contrast, old-fashion steganography, such as Jsteg, OutGuess, and model-based steganography, exhibit complementary trends. The results of empirical detectors closely match the trends exhibited by the KL divergence computed between models of cover and stego DCT modes. In particular, our analysis shows that the main reason for the complementary trends is the way modern schemes attenuate embedding change rates with increasing spatial frequency. Our model also provides guidance on how to adjust the embedding algorithm J-UNIWARD to improve its security for JPEG quality factor 100.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Centre de Recherche en Informatique, Signal et Automatique de Lille (CRIStAL) - UMR 9189

Source :

Harvested from HAL

Date de dépôt :

2024-02-13T03:09:37Z