On the security of a convertible authenticated encryption

被引：9
|
作者：
Zhang, JH [1 ]
Wang, YM
机构：
[1] N China Univ Technol, Coll Sci, Beijing 100041, Peoples R China
[2] Xidian Univ, State Key Lab, ISN, Xian 710071, Shaanxi, Peoples R China
来源：
APPLIED MATHEMATICS AND COMPUTATION | 2005年 / 169卷 / 02期
关键词：
security analysis; improved authenticated encryption scheme; secure proof;
D O I：
10.1016/j.amc.2004.11.010
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
In this paper, we give security analysis to the convertible authenticated encryption scheme of Hung-Yu Chien [H.-Y. Chien, Convertible authenticated encryption scheme without using conventional one-way function, Informatica 14 (4) (2003) 1-9, Institute of Mathematics and Inforamtica, ISSN 0868-4952], and show that H.Y. Chien scheme have forgeability and repudiation; at the same time, we give the corresponding attack. Finally, we propose an improved publicly verifiable authenticated encryption schemes based on the Hung-Yu Chien Scheme. As for efficiency, the computation cost and communication overhead of our improved schemes are as small as the original schemes and in comparison with the original scheme, our improved scheme is more secure. (c) 2004 Elsevier Inc. All rights reserved.
引用
收藏
页码：1063 / 1069
页数：7
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