ATTACK AND IMPROVE THE ZHAO-LIU AUTHENTICATED ENCRYPTION SCHEME

被引：0

作者：

Chang, Ting-Yi ^{[1
]}

Chiang, Mao-Lun ^{[2
]}

机构：

[1] Natl Changhua Univ Educ, Grad Inst Learning E, Changhua, Taiwan

[2] Tzu Chi Coll Technol, Dept Informat Engn & Informat, Hualien 970, Taiwan

来源：

INTERNATIONAL JOURNAL OF INNOVATIVE COMPUTING INFORMATION AND CONTROL | 2009年 / 5卷 / 10A期

关键词：

Authenticated encryption; Digital signature; Elliptic curve cryptosystem; Universal forgery attack; LIMITED VERIFIER SIGNATURE; MESSAGE LINKAGES; CRYPTOSYSTEMS;

D O I：

暂无

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

In this paper, we show that the Zhao-Liu authenticated encryption scheme is vulnerable to a universal forgery attack. This one malicious verifier is able to use previous signatures to forge the signer's authenticated encryption signature on any message. Two simple methods are presented to withstand this attack. One method also additionally provides the convertible property in the Zhao-Liu authenticated encryption scheme, which allows the verifier to convert the signature into an ordinary one. The converted signature can be verified by anyone, without revealing his/her secret key.

引用

页码：3025 / 3030

页数：6

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