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Journal of Information Science and Engineering, Vol.19 No.5, pp.881-887 (September 2003)


A New Digital Multisignature Scheme With Distinguished Signing Authorities

Shin-Jia Hwang*, Min-Shiang Hwang and Shiang-Feng Tzeng
Department of Computer Science and Information Engineering
TamKang University
Taipei Hsien, 251 Taiwan
E-mail: sjhwang@mail.tku.edu.tw
Department of Information Management
Chaoyang University of Technology
Taichung Hsien, 413 Taiwan
E-mail: ShiangFeng@ms67.url.com.tw

In 1999, Harn proposed a multisignature scheme with distinguished signing authorities. In Harns scheme, a malice member easily confuses the signing authorities since individual signatures and multisignatures both generated on the whole document cannot be used as evidence to distinguish the signing authorities. Moreover, Harns scheme is also not secure against Li et al.s attack [4]. To provide evidence and remove Li et al.s attack, a new multisignature scheme with distinguished signing authorities is proposed in this article.

Keywords: digital signature, multisignature, group-oriented signature scheme, cryptography, security

Full Text () Retrieve PDF document (200309_09.pdf)

Received February 27, 2002; revised august 14, 2002; accepted January 24, 2003.
Communicated by Ja-Ling Wu.