Traitor tracing scheme with public traceability
Xueyuan Li, Xinmei Wang · Computer Engineering and Applications Journal · 2007
Traitor tracing schemes play an important role for secure distribution of digital content.Based on DDH(Decision Diffie-Hellman) assumption and the idea that users choose their personal secret keys and compute their personal public keys,the system utilizes users’ personal public keys to trace traitors,this paper presents a fully public-key asymmetric traitor tracing scheme with public traceability.The scheme can delegate the tracing capability to anyone(trusted or untrusted) and revoke or add a user without updating other users’ secret keys,has some other properties such as anonymity and black-box tracing.