ID-Based Threshold Decryption Secure Against Chosen Plaintext Attack  

作　　者：龙宇 陈克非 刘胜利 

机构地区：[1]Dept. of Computer Science and Eng., Shanghai Jiaotong Univ., Shanghai 200030, China,National Lab.of Modern Communications, Chengdu 610041 [2]Dept. of Computer Science and Eng., Shanghai Jiaotong Univ., Shanghai 200030, China

出　　处：《Journal of Shanghai Jiaotong university(Science)》2006年第2期127-133,共7页上海交通大学学报（英文版）

基　　金：NationalNaturalScienceFoundationofChina(Nos.60303026,60573030,90104005and60303026)andtheFoundationofNLMC(No.51436040405JW0304)

摘　　要：B.Libert and J.Quisquater proposed an identity(ID)-based threshold decryption scheme. This paper found flaw in their security reduction and presented two methods to prove this scheme is resist against chosen-plaintext attack(CPA), based on the weaker model of security known as selective ID-based threshold CPA and the common model known as ID-based threshold CPA respectively.B. Libert and J. Quisquater proposed an identity （ID）-based threshold decryption scheme. This paper found flaw in their security reduction and presented two methods to prove this scheme is resist against chosen-plaintext attack（CPA）, based on the weaker model of security known as selective ID-based threshold CPA and the common model known as ID-based threshold CPA respectively.

关 键 词：threshold decryption identity-based cryptology publicly checkable encryption 

分 类 号：TN919.81[电子电信—通信与信息系统]