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高效的基于身份的签密方案 被引量:5

High-efficient signcryption scheme based on identity
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摘要 签密能够以较低的通信成本同时完成认证和加密两种功能。提出了一个新的基于身份的签密方案,并在随机预言模型下证明了其安全性。本方案在签密阶段不需要双线性对的计算,解密阶段也只需要两次双线性对计算,与以往方案比较,该方案的运算量更低。 Signcryption offers authentication and confidentiality simultaneously with a lower cost. A new identity based signcryption scheme is proposed, which is proved to be secure under the random ora- cle model. The proposed scheme does not require pairing operation in signcryption, and only have 2 pai- ring operations in unsigncryption. Compared with the previous schemes, the computation cost of the proposed scheme is less.
出处 《计算机工程与科学》 CSCD 北大核心 2014年第3期441-445,共5页 Computer Engineering & Science
基金 贵州师范大学2013年博士科研基金资助项目 贵州省科学技术基金资助项目(黔科合J字LKS[2013]02号) 贵州省科学技术基金资助项目(黔科合J字[2013]2214)
关键词 基于身份的密码 签密 双线性对 随机预言模型 identity-based cryptography signcryption bilinear pairings random oracle model
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