A Multi-key Pirate Decoder against Traitor Tracing Schemes
In this paper we introduce an architecture for a multi-key pirate decoder which employs decryption keys from multiple traitors. The decoder has built-in monitoring and self protection functionalities and is capable of defeating most multiple-round based traitor tracing schemes such as the schemes based on the black-box confirmation method. In particular, the proposed pirate decoder is customized to defeat the private key and the public key fully collusion resistant traitor tracing (FTT) schemes, respectively. We show how the decoder prolongs a trace process so that the tracer has to give up his effort. FTT schemes are designed to identify all the traitors. We show that decoder enables the FTT schemes to identify at most 1 traitors. Finally, assuming the decoder is embedded with several bytes of memory, we demonstrate how the decoder is able to frame innocent users at will.
broadcast encryption, multi-key pirate decoder, traitor tracing
Information Security and Trust
Journal of Computer Science and Technology
WU, Yongdong and DENG, Robert H..
A Multi-key Pirate Decoder against Traitor Tracing Schemes. (2010). Journal of Computer Science and Technology. 25, (2), 362-374. Research Collection School Of Information Systems.
Available at: http://ink.library.smu.edu.sg/sis_research/756