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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 Harn¡¦s 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, Harn¡¦s 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
Received February 27, 2002; revised august 14, 2002; accepted January 24, 2003.
Retrieve PDF document (200309_09.pdf)
Communicated by Ja-Ling Wu.