INFORMATICA

Informatica

0868-4952 0868-4952

INF11102

10.3233/INF-2000-11102

Research article

Cryptanalysis of the Batch Verifying Multiple RSA Digital Signatures ^✩

Hwang

Min-Shiang

mshwang@cyut.edu.tw Lin

Iuon-Chung

Hwang

Kuo-Feng

Department of Information Management Chaoyang University of Technology, 168, Gifeng E.Rd., Wufeng, Taichung Country, Taiwan 413, R.O.C. Department of Computer Science and Information Engineering, National Chung Cheng University, Chaiyi, Taiwan, R.O.C.

^✩

This research was partially supported by the NSC89-2213-E-324-001.

01 01 2000

11 1 15 18 01 01 2000

Recently, Harn proposed an efficient scheme that can batch verification multiple RSA digital signatures. His scheme can reduce signature verification time. However, there is a weakness in his scheme. In this study, we present two methods to against his scheme.

Keywords cryptography digital signature RSA