Public Traceability in Traitor Tracing Schemes

Traitor tracing schemes are of major importance for secure distribution of digital content. They indeed aim at protecting content providers from colluding users to build pirate decoders. If such a collusion happens, at least one member of the latter collusion will be detected. Several solutions have already been proposed in the literature, but the most important problem to solve remains having a very good ciphertext/plaintext rate. At Eurocrypt ’02, Kiayias and Yung proposed the first scheme with such a constant rate, but still not optimal. In this paper, granted bilinear maps, we manage to improve it, and get an “al

• Type: Conference
• Year: 2005
• Where: EUROCRYPT
• Authors: Hervé Chabanne, Duong Hieu Phan, David Pointcheval
• Keywords: Collusion, Cryptography, EUROCRYPT 2005, Pirate Decoders, Traitor Tracing Schemes