Analysis and improvement of authenticatable ring signcryption scheme

被引：9
作者：
Li F.-G. [1 ,2 ,3 ]
Masaaki S. [3 ]
Tsuyoshi T. [3 ]
机构：
[1] School of Computer Science and Engineering, University of Electronic Science and Technology of China
[2] State Key Laboratory of Information Security, Graduate School, Chinese Academy of Sciences
[3] School of Systems Information Science, Future University-Hakodate
来源：
Journal of Shanghai Jiaotong University (Science) | 2008年 / 13卷 / 6期
基金：
中国国家自然科学基金;
关键词：
Bilinear pairings; Identity-based cryptography; Ring signature; Ring signcryption;
D O I：
10.1007/s12204-008-0679-2
中图分类号：
学科分类号：
摘要：
We show that the Zhang-Yang-Zhu-Zhang identity-based authenticatable ring signcryption scheme is not secure against chosen plaintext attacks. Furthermore, we propose an improved scheme that remedies the weakness of the Zhang-Yang-Zhu-Zhang scheme. The improved scheme has shorter ciphertext size than the Zhang-Yang-Zhu-Zhang scheme. We then prove that the improved scheme satisfies confidentiality, unforgeability, anonymity and authenticatability. Copyright.
引用
收藏
页码：679 / 683
页数：4
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