一种抗不诚实第三方攻击的一次性公钥方案  

One-off Public Key Scheme for Preventing Dishonest Third Party Attacking

作　　者：柴林鹏 张斌 CHAI Lin-peng;ZHANG Bin(Information Engineering University,Zhengzhou 450001,China;Henan Province Information Security Key Laboratory,Zhengzhou 450001,Chin)

机构地区：[1]信息工程大学,郑州450001 [2]河南省信息安全重点实验室,郑州450001

出　　处：《计算机科学》2018年第7期139-142,185,共5页Computer Science

基　　金：河南省基础与前沿技术研究计划(142300413201)资助

摘　　要：针对现有典型一次性公钥方案无法抵抗不诚实第三方恶意攻击的问题,提出一种可对第三方行为进行双重约束的一次性公钥改进方案。基于该方案,用户和服务提供方可通过第三方发布的身份索引及私钥生成过程中的公开可验证消息对其诚实性进行判断,从而约束第三方的不诚实行为。同时,采用的索引生成算法在一定程度上提高了对恶意用户的追踪效率。Aiming at the problem that the existing schemes cannot resist the malicious behaviors of the dishonest third party,this paper proposed an improved one-off public key scheme that can doubly restrain the behaviors of the third party.In this scheme,users and service providers can judge whether the third party is honest or not via verifying the identity index published by the third party and the publicly verifiable information generated during the private key extraction,and this scheme can restrain the dishonest behaviors of the third party consequently.At the same time,the index algorithm can improve the efficiency of trace for malicious users.

关 键 词：匿名性 基于身份密码体制 一次性公钥 公开可验证 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]