改进的无线性对固定轮数无证书群组密钥协商协议

发布时间：2018-03-01 17:03

本文关键词： 无证书群组密钥协商协议无线性对　出处：《清华大学学报(自然科学版)》2017年06期 　论文类型：期刊论文

【摘要】：针对现有无证书群组密钥协商协议无法在敌手具有替换用户公钥或获知私钥生成中心(key generation center,KGC)主秘密密钥2类攻击能力下满足安全性,该文提出一种显式认证的无证书群组密钥协商协议。该协议通过在第二轮中添加签名消息、签名与群组用户身份集合、第一轮所有广播消息、第二轮用户发送的消息,保证了消息的新鲜性和身份的认证;对协议第二轮消息进行改进,使得敌手无法利用邻居节点进行攻击。分析结果表明:与其他无证书群组密钥协商协议相比,本协议可抗具有2类攻击能力的敌手,且计算量更小。
[Abstract]:In view of the fact that the existing certificateless group key agreement protocol can not satisfy the security if the enemy has the ability of replacing the user's public key or knowing the private key generation center key generation center KGC2 attacks, the security can not be satisfied. In this paper, an explicit authenticated group key agreement protocol without certificates is proposed. By adding signature messages to the second round, the protocol signs the group user identity set, the first round of all broadcast messages, and the second round of messages sent by users. It ensures the freshness of the message and the authentication of identity, improves the second round message, and makes the enemy unable to attack by using the neighbor node. The analysis results show that compared with other non-certificated group key agreement protocols, This protocol can resist the adversary with 2 kinds of attack ability, and the computation is less.
【作者单位】：北京理工大学软件学院软件安全工程技术北京市重点实验室;
【基金】：国家重点研发计划项目(2016YFB0800700)
【分类号】：TN918.4

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