Identity-based encryption with wildcards in the standard model  

作　　者：MING Yang SHEN Xiao-qin WANG Yu-min 

机构地区：[1]School of Information Engineering, Chang'an University, Xi'an 710064, China [2]ZTE Corporation, Xi'an 710065, China [3]State Key Laboratory of Integrated Service Network, Xidian University, Xi'an 710071, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2009年第1期64-68,80,共6页中国邮电高校学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (60473027).

摘　　要：In this article, based on Chatterjee-Sarkar＇ hierarchical identity-based encryption （HIBE）, a novel identity-based encryption with wildcards （WIBE） scheme is proposed and is proven secure in the standard model （without random oracle）. The proposed scheme is proven to be secure assuming that the decisional Bilinear Diffie-Hellman （DBDH） problem is hard. Compared with the Wa-WIBE scheme that is secure in the standard model, our scheme has shorter common parameters and ciphertext length.In this article, based on Chatterjee-Sarkar＇ hierarchical identity-based encryption （HIBE）, a novel identity-based encryption with wildcards （WIBE） scheme is proposed and is proven secure in the standard model （without random oracle）. The proposed scheme is proven to be secure assuming that the decisional Bilinear Diffie-Hellman （DBDH） problem is hard. Compared with the Wa-WIBE scheme that is secure in the standard model, our scheme has shorter common parameters and ciphertext length.

关 键 词：ENCRYPTION identity-based encryption with wildcards bilinear pairing 

分 类 号：O572.2[理学—粒子物理与原子核物理] TP317.2[理学—物理]