A Lightweight Buyer-Seller Watermarking Protocol
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 watermar...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Hindawi Limited
2008-01-01
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| Series: | Advances in Multimedia |
| Online Access: | http://dx.doi.org/10.1155/2008/905065 |
| _version_ | 1827006517153366016 |
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| author | Yongdong Wu Hweehua Pang |
| author_facet | Yongdong Wu Hweehua Pang |
| author_sort | Yongdong Wu |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2025-02-18T12:05:24Z |
| format | Article |
| id | doaj.art-107a03a199214dcb9117c0298c6dfed2 |
| institution | Directory Open Access Journal |
| issn | 1687-5680 1687-5699 |
| language | English |
| last_indexed | 2025-02-18T12:05:24Z |
| publishDate | 2008-01-01 |
| publisher | Hindawi Limited |
| record_format | Article |
| series | Advances in Multimedia |
| spelling | doaj.art-107a03a199214dcb9117c0298c6dfed22024-11-02T05:08:50ZengHindawi LimitedAdvances in Multimedia1687-56801687-56992008-01-01200810.1155/2008/905065905065A Lightweight Buyer-Seller Watermarking ProtocolYongdong Wu0Hweehua Pang1Information Security Laborator, Institute for Infocomm Research, 21 Heng Mui Keng Terrace, 119613, SingaporeSchool of Information Systems, Singapore management University, 178902, SingaporeThe 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.http://dx.doi.org/10.1155/2008/905065 |
| spellingShingle | Yongdong Wu Hweehua Pang A Lightweight Buyer-Seller Watermarking Protocol Advances in Multimedia |
| title | A Lightweight Buyer-Seller Watermarking Protocol |
| title_full | A Lightweight Buyer-Seller Watermarking Protocol |
| title_fullStr | A Lightweight Buyer-Seller Watermarking Protocol |
| title_full_unstemmed | A Lightweight Buyer-Seller Watermarking Protocol |
| title_short | A Lightweight Buyer-Seller Watermarking Protocol |
| title_sort | lightweight buyer seller watermarking protocol |
| url | http://dx.doi.org/10.1155/2008/905065 |
| work_keys_str_mv | AT yongdongwu alightweightbuyersellerwatermarkingprotocol AT hweehuapang alightweightbuyersellerwatermarkingprotocol AT yongdongwu lightweightbuyersellerwatermarkingprotocol AT hweehuapang lightweightbuyersellerwatermarkingprotocol |