Abstract
The sensitivity analysis attacks by Kalker et al. constitute a known family of watermark removal attacks exploiting a vulnerability in some watermarking protocols: the attacker's unlimited access to the watermark detector. In this paper, a new attack on spread spectrum schemes is designed. We first examine one of Kalker's algorithms and prove its convergence using the law of large numbers, which gives more insight into the problem. Next, a new algorithm is presented and compared to existing ones. Various detection algorithms are considered including correlation detectors and normalized correlation detectors, as well as other, more complicated algorithms. Our algorithm is noniterative and requires at most n + 1 operations, where n is the dimension of the signal. Moreover, the new approach directly estimates the watermark by exploiting the simple geometry of the detection boundary and the information leaked by the detector.
| Original language | English (US) |
|---|---|
| Article number | 72 |
| Pages (from-to) | 734-745 |
| Number of pages | 12 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 5681 |
| DOIs | |
| State | Published - Jul 21 2005 |
| Event | Proceedings of SPIE-IS and T Electronic Imaging - Security, Steganography, and Watermarking of Multimedia Contents VII - San Jose, CA, United States Duration: Jan 17 2005 → Jan 20 2005 |
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Keywords
- Copyright protection
- Sensitivity analysis attacks
- Spread spectrum
- Watermarking
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering
Cite this
New sensitivity analysis attack. / El Choubassi, Maha; Moulin, Pierre.
In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 5681, 72, 21.07.2005, p. 734-745.Research output: Contribution to journal › Conference article
}
TY - JOUR
T1 - New sensitivity analysis attack
AU - El Choubassi, Maha
AU - Moulin, Pierre
PY - 2005/7/21
Y1 - 2005/7/21
N2 - The sensitivity analysis attacks by Kalker et al. constitute a known family of watermark removal attacks exploiting a vulnerability in some watermarking protocols: the attacker's unlimited access to the watermark detector. In this paper, a new attack on spread spectrum schemes is designed. We first examine one of Kalker's algorithms and prove its convergence using the law of large numbers, which gives more insight into the problem. Next, a new algorithm is presented and compared to existing ones. Various detection algorithms are considered including correlation detectors and normalized correlation detectors, as well as other, more complicated algorithms. Our algorithm is noniterative and requires at most n + 1 operations, where n is the dimension of the signal. Moreover, the new approach directly estimates the watermark by exploiting the simple geometry of the detection boundary and the information leaked by the detector.
AB - The sensitivity analysis attacks by Kalker et al. constitute a known family of watermark removal attacks exploiting a vulnerability in some watermarking protocols: the attacker's unlimited access to the watermark detector. In this paper, a new attack on spread spectrum schemes is designed. We first examine one of Kalker's algorithms and prove its convergence using the law of large numbers, which gives more insight into the problem. Next, a new algorithm is presented and compared to existing ones. Various detection algorithms are considered including correlation detectors and normalized correlation detectors, as well as other, more complicated algorithms. Our algorithm is noniterative and requires at most n + 1 operations, where n is the dimension of the signal. Moreover, the new approach directly estimates the watermark by exploiting the simple geometry of the detection boundary and the information leaked by the detector.
KW - Copyright protection
KW - Sensitivity analysis attacks
KW - Spread spectrum
KW - Watermarking
UR - http://www.scopus.com/inward/record.url?scp=21844452953&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=21844452953&partnerID=8YFLogxK
U2 - 10.1117/12.587901
DO - 10.1117/12.587901
M3 - Conference article
AN - SCOPUS:21844452953
VL - 5681
SP - 734
EP - 745
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
SN - 0277-786X
M1 - 72
ER -