完整内部安全的混合签密方案设计与分析  

Design and Analysis of Hybrid Signcryption Scheme with Full Insider Security

作　　者：廖钰城 王立斌[1] 黄杰彬 LIAO Yucheng;WANG Libin;HUANG Jiebin(School of Computer,South China Normal University,Guangzhou 510631,China)

机构地区：[1]华南师范大学计算机学院,广州510631

出　　处：《华南师范大学学报（自然科学版）》2022年第6期119-127,共9页Journal of South China Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(62072207)。

摘　　要：设计达到完整内部安全的混合签密方案(HSC)是目前亟待解决的重要问题,而如何实现高效安全的签密密钥封装机制(SC-KEM)则是解决该问题的关键。为此,先设计一种带标签的签密密钥封装机制(SC-tag-KEM)的通用构造方案(SCtKstd),该方案通过签名绑定标签与密钥封装报文,将得到的签名和临时密钥使用消息认证码进行绑定。在标准模型下进行的安全性分析表明SCtKstd方案可达到DM-IND-iCCA安全和DM-SUF-iCMA安全,进而为达成完整内部安全奠定基础。然后,将SCtKstd方案与被动安全对称加密机制结合,构造了一种可达完整内部安全的混合签密的通用构造方案(HSCstd)。在标准模型下进行的安全性分析表明HSCstd方案同时具备IND-CCA2安全与SUF-CMA安全,进而达到完整内部安全。Currently, it is of significant importance to design a hybrid signcryption scheme(HSC) with full insider security, and one of the crucial methods is to implement an efficient and secure signcryption key encapsulation mechanism(SC-KEM). To this goal, a new generic construction scheme(HSCstd) of secure signcryption tag key encapsulation mechanism(SC-tag-KEM) is proposed, which signing a tag together with the encapsulation of key, and using message authentication code binding of the signature and the ephemeral key to achieve DM-IND-iCCA security and DM-SUF-iCMA security under the standard model, thus the foundation for full insider security is established. Furthermore, combined with the passive-secure symmetric encryption scheme, a new generic construction(HSCstd) of hybrid signcryption scheme achieving the full insider security is presented. It is analysed to achieve DM-CCA2 security and SUF-CMA security under the standard model, thus achieving the full insider security.

关 键 词：混合签密方案 完整内部安全 可证明安全 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]