A Fully Collusion Resistant Public Key Trace and Revoke Scheme with Dynamic Registration and Revocation  

作　　者：LIU Shengli WENG Jian CHEN Kefei LI Xiangxue 

机构地区：[1]Department of Computer Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China [2]State Key Laboratory of Information Security, Chinese Academy of Sciences, Beijing 100080, China [3]Department of Computer Science, Jinan University, Guangzhou 510632, China [4]School of Information Security Engineering, Shanghai Jiaotong University, Shanghai 200240, China

出　　处：《Chinese Journal of Electronics》2009年第2期347-354,共8页电子学报（英文版）

基　　金：This work is supported by the National Natural Science Foundation of China （No.60873229, No.60673077, No.60673076, No.60573030, No.60703031）, the National 863 High-Technology Project （No.2006AA01Z422） and 973 Program （No.2007CB311201）.

摘　　要：We present a new public key trace and revoke scheme, which is suitable for scenarios where users need to join or leave the system frequently. The proposed scheme supports public traceability and dynamic registration and revocation. It is also fully collusion resistant against adaptive chosen ciphertext attack, and its provable security is tightly reduced to the Decisional Diffie-Hellman （DDH） assumption in the standard model. No master key is needed in our scheme, and it allows users to generate public/private keys themselves and then submit the public keys to the system. This means that the setup phase only involves an authentic channel instead of a secure one. Therefore, our scheme can take advantage of Public key infrastructure （PKI） with Certificate authority （CA） playing the role of the system center.

关 键 词：Broadcast encryption Traitor tracing Fully collusion resistant. 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术] TP311.13[自动化与计算机技术—计算机科学与技术]