An Attribute-Based Signcryption Scheme and Its Application in Information Hiding  

作　　者：PENG Changgen WANG Weiru TIAN Youliang YUAN Zhilong 

机构地区：[1]College of Computer Science and Technology, Guizhou University, Guiyang 550025, China [2]Guizhou Provincial Key Laboratory of Public Big Data, Guiyang 550025, China [3]Faculty of Science and Technology, University of Macao, Macao, China [4]Institute of Information Engineering, Chinese Academy of Sciences, Beijing 100093, China

出　　处：《Chinese Journal of Electronics》2016年第4期632-640,共9页电子学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.61262073,No.60963023,No.61363068);China Postdoctoral Science Foundation(No.2013M530705);the Natural Science Foundation of Guizhou Province of China(No.20092113,No.20132112);the Special Foundation for Improving Research Condition of High-level Talents of Guizhou Province(No.TZJF-2008-33);the Doctoral Scientific Foundation of Guizhou University(No.2007-040,No.2012-024)

摘　　要：In order to provide a secure,reliable and flexible way to hide information,a new attribute-based signcryption scheme based on ciphertext-policy and its security proof are presented.This scheme not only can simultaneously fulfil both authentication and confidentiality in an efficient way,but also implements a hierarchical decryption in one group and also between different groups according to user's authority(different users satisfying the same access structure can be considered as a group).We provide a solution to information hiding using our proposed scheme which can embed ciphertext into a carrier.Because the hierarchical decryption property,different users will obtain different message from the same carrier.Illegal user can not get any information without private key because message existed in the carrier is ciphertext.Such solution can be applied in sharing important message under the public network.In order to provide a secure,reliable and flexible way to hide information,a new attribute-based signcryption scheme based on ciphertext-policy and its security proof are presented.This scheme not only can simultaneously fulfil both authentication and confidentiality in an efficient way,but also implements a hierarchical decryption in one group and also between different groups according to user＇s authority（different users satisfying the same access structure can be considered as a group）.We provide a solution to information hiding using our proposed scheme which can embed ciphertext into a carrier.Because the hierarchical decryption property,different users will obtain different message from the same carrier.Illegal user can not get any information without private key because message existed in the carrier is ciphertext.Such solution can be applied in sharing important message under the public network.

关 键 词：Attribute-based signcryption Information hiding Access structure Hierarchical decryption 

分 类 号：TP309[自动化与计算机技术—计算机系统结构] TP316.7[自动化与计算机技术—计算机科学与技术]