Further Analysis of a Practical Hierarchical Identity-Based Encryption Scheme

被引：0

作者：

Sun, Ying ^{[1
]}

Yu, Yong ^{[2
]}

Mu, Yi ^{[3
]}

机构：

[1] Sichuan Elect Power Res Inst, Chengdu 610072, Peoples R China

[2] Univ Elect Sci & Technol China, Sch Engn & Comp Sci, Chengdu 610054, Peoples R China

[3] Univ Wollongong, Sch Comp Sci & Software Engn, Ctr Comp & Informat Secur Res, Wollongong, NSW 2522, Australia

来源：

IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS | 2012年 / E95D卷 / 06期

基金：

中国国家自然科学基金; 新加坡国家研究基金会;

关键词：

cryptanalysis; encryption; hierarchical identity-based cryptography;

D O I：

10.1587/transinf.E95.D.1690

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Hu, Huang and Fan proposed a fully secure hierarchical identity-based encryption (IEICE Trans. Fundamentals, Vol.E92-A, No.6, pp.1494-1499,2009) that achieves constant size of ciphertext and tight security reduction. Unfortunately, Park and Lee (IEICE Trans. Fundamentals, Vol.E93-A, No.6, pp.1269-1272,2010) found that the security proof of Hu et al.'s scheme is incorrect; that is, the security of Hu et al.'s scheme cannot be reduced to their claimed q-ABDHE assumption. However, it is unclear whether Hu et al.'s scheme is still secure. In this letter, we provide an attack to show that the scheme is not secure against the chosen-plaintext attack.

引用

页码：1690 / 1693

页数：4

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