Buyer-seller watermarking protocols integrate watermarking techniques with cryptography, for copyright protection, piracy tracing, and privacy protection. In this paper, we propose an efficient buyerseller watermarking protocol based on homomorphic public-key cryptosystem and composite signal representation in the encrypted domain. A recently proposed composite signal representation allows us to reduce both the computational overhead and the large communication bandwidth which are due to the use of homomorphic public-key encryption schemes. Both complexity analysis and simulation results confirm the efficiency of the proposed solution, suggesting that this technique can be successfully used in practical applications.
An efficient buyer-seller watermarking protocol based on composite signal representation / M. Deng; T. Bianchi; A. Piva; B. Preneel. - STAMPA. - (2009), pp. 9-18. (Intervento presentato al convegno 11th ACM workshop on Multimedia and security 2009 tenutosi a Princeton, New Jersey, USA nel September 07 - 08, 2009).
An efficient buyer-seller watermarking protocol based on composite signal representation
PIVA, ALESSANDRO;
2009
Abstract
Buyer-seller watermarking protocols integrate watermarking techniques with cryptography, for copyright protection, piracy tracing, and privacy protection. In this paper, we propose an efficient buyerseller watermarking protocol based on homomorphic public-key cryptosystem and composite signal representation in the encrypted domain. A recently proposed composite signal representation allows us to reduce both the computational overhead and the large communication bandwidth which are due to the use of homomorphic public-key encryption schemes. Both complexity analysis and simulation results confirm the efficiency of the proposed solution, suggesting that this technique can be successfully used in practical applications.
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