适用于移动互联网的门限群签名方案

发布时间：2019-01-03 14:27

【摘要】：当前的移动互联网得到了快速的发展和应用,但是在这之上的信息易遭受窃听、篡改、伪造等威胁,这是当前信息安全研究的重要问题.在移动终端电子投票、移动合同签署、移动联合购物等应用场合中,门限群签名技术的应用能有效保证系统的安全.但是,现有基于可信中心的ECC门限群签名方案,缺乏成员对可信中心的反向认证机制,因此可信中心容易成为整个签名系统的安全隐患.针对这个问题,该文提出了一种新的适用于移动互联网的ECC门限群签名方案,并对方案中涉及到的签名初始化、成员注册、份额签名生成、签名合成、签名验证、签名打开以及签名成员撤销等步骤进行详细设计.提出了新门限群签名方案基于成员和可信中心共同生成成员密钥的思想,并且完成了成员和可信中心身份双向认证、密钥共同生成以及成员身份的两次盲化.经安全性证明,该文所提的方案具有正确性和安全性,能抵抗联合攻击和陷害攻击等.性能分析比较的结果也表明,在相同安全水平下,该文所提的方案签名长度更短,签名生成和签名验证的计算量更低.而适用性分析结果也表明,该文所提的方案实现了成员对可信中心的认证和二次盲化处理,降低了移动终端的通信及计算开销,能更好地适用于移动互联网环境中.最后,该文还基于随机预言机(ROM)模型完成了对所提出的门限群签名方案的形式化安全证明.
[Abstract]:The current mobile Internet has been rapidly developed and applied, but the information on it is vulnerable to eavesdropping, tampering, forgery and other threats, which is an important issue in the current information security research. In mobile terminal electronic voting, mobile contract signing, mobile joint shopping and other applications, the application of threshold group signature technology can effectively ensure the security of the system. However, the existing ECC threshold group signature scheme based on trusted center lacks the reverse authentication mechanism of the member to the trusted center, so the trusted center is easy to become the security hazard of the whole signature system. In order to solve this problem, a new ECC threshold group signature scheme for mobile Internet is proposed in this paper. The signature initialization, member registration, share signature generation, signature synthesis, signature verification are involved in the scheme. The signature opening and signature member revocation are designed in detail. A new threshold group signature scheme is proposed to generate the member key based on the member and the trusted center, and the bidirectional authentication of the member and the trusted center, the co-generation of the key and the twice blindness of the membership are completed. It is proved that the proposed scheme is correct and secure and can resist joint attack and frame attack. The results of performance analysis and comparison also show that the proposed scheme has shorter signature length and lower computational complexity in signature generation and signature verification under the same security level. The results of applicability analysis also show that the proposed scheme realizes the authentication and secondary blind processing of the trusted center, and reduces the communication and computing overhead of the mobile terminal, and is more suitable for the mobile Internet environment. Finally, based on the random oracle (ROM) model, the formal security proof of the proposed threshold group signature scheme is completed.
【作者单位】：东南大学信息科学与工程学院
【基金】：国家自然科学基金项目(61372103) 国家“八六三”高技术研究发展计划重点项目(2013AA014001) 中兴通讯产学研基金项目资助~~
【分类号】：TP309

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