基于多接收者加密算法的可否认环认证协议  

Deniable Ring Authentication Based on Multi-receiver Encryption

作　　者：曾晟珂[1] 何明星[1] 唐明伟[1] 

机构地区：[1]西华大学数学与计算机学院,四川成都610039

出　　处：《西华大学学报（自然科学版）》2015年第2期1-5,21,共6页Journal of Xihua University:Natural Science Edition

基　　金：国家自然科学基金(61402376;U1433130);数字空间安全保障四川省高校重点实验室开放课题(szjj2014-078);教育部春晖计划(Z2014051);四川省科技厅项目(2013JY0089);四川省教育厅重点项目(13ZA0019);西华大学重点项目(Z1222623;Z1322622)

摘　　要：可否认的环认证协议允许消息的发送者匿名地认证某消息,而在认证的同时,消息接收方却不能够向第三方揭示此次认证的发生,即消息发送方可以否认该认证。针对这一问题,提出一种新的基于多接收者加密算法的可否认环认证协议。消息接收者运行基于多接收者的加密算法对认证码进行加密,并将结果发送给消息发送方。发送方解密后得到认证码,并利用该认证码对消息进行认证。该协议构造简单,仅需要2轮通信。多接收者加密算法保护了发送者的隐私,且其可否认性在并发环境中成立。Deniable ring authentication protocol allows a sender to deny an authentication and his identity is anonymous to the re- ceiver. In this work, we propose a new deniable ring authentication protocol based on the multi-receiver encryption scheme. The re- ceiver encrypts an authentication key with muhi-receiver encryption scheme and sends it to the sender. The sender decrypts it using his private key to obtain the authentication key and uses this key to authenticate messages. This protocol only requires two communication rounds and its deniabilitv holds in the concurrent settin~ without reouirinz timin~ assumotion due to the multi-receiver encrvntion.

关 键 词：并发可否认性 可否认的环认证 多接收者加密 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]