A method for obtaining digital signatures and public-key cryptosystems
Communications of the ACM
Handbook of Applied Cryptography
Handbook of Applied Cryptography
JPEG 2000: Image Compression Fundamentals, Standards and Practice
JPEG 2000: Image Compression Fundamentals, Standards and Practice
Digital image watermarking for joint ownership
Proceedings of the tenth ACM international conference on Multimedia
Secure and Private Distribution of Online Video and Some Related Cryptographic Issues
ACISP '01 Proceedings of the 6th Australasian Conference on Information Security and Privacy
If one watermark is good, are more better?
ICASSP '99 Proceedings of the Acoustics, Speech, and Signal Processing, 1999. on 1999 IEEE International Conference - Volume 04
A secure watermarking scheme for buyer-seller identification and copyright protection
EURASIP Journal on Applied Signal Processing
Cocktail watermarking for digital image protection
IEEE Transactions on Multimedia
IEEE Journal on Selected Areas in Communications
Secure spread spectrum watermarking for multimedia
IEEE Transactions on Image Processing
A buyer-seller watermarking protocol
IEEE Transactions on Image Processing
Multipurpose watermarking for image authentication and protection
IEEE Transactions on Image Processing
Secret and public key image watermarking schemes for image authentication and ownership verification
IEEE Transactions on Image Processing
A wavelet-based watermarking algorithm for ownership verification of digital images
IEEE Transactions on Image Processing
An efficient and anonymous buyer-seller watermarking protocol
IEEE Transactions on Image Processing
Fingerprinting protocol for images based on additive homomorphic property
IEEE Transactions on Image Processing
Novel blind multiple watermarking technique for images
IEEE Transactions on Circuits and Systems for Video Technology
Classification Framework for Fair Content Tracing Protocols
IWDW '09 Proceedings of the 8th International Workshop on Digital Watermarking
Improving a Digital Rights Management Scheme for Video Broadcast
PCM '09 Proceedings of the 10th Pacific Rim Conference on Multimedia: Advances in Multimedia Information Processing
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The buyer-seller watermarking protocol enables a seller to successfully identify a traitor from a pirated copy, while preventing the seller from framing an innocent buyer. Based on finite field theory and the homomorphic property of public key cryptosystems such as RSA, several buyer-seller watermarking protocols (N. Memon and P. W. Wong (2001) and C.-L. Lei et al. (2004)) have been proposed previously. However, those protocols require not only large computational power but also substantial network bandwidth. In this paper, we introduce a new buyer-seller protocol that overcomes those weaknesses by managing the watermarks. Compared with the earlier protocols, ours is n times faster in terms of computation, where n is the number of watermark elements, while incurring only O(1/lN) times communication overhead given the finite field parameter lN. In addition, the quality of the watermarked image generated with our method is better, using the same watermark strength.