題名: Cryptanalysis of Nonrepudiable Threshold Proxy Signature Schemes with
Known Signers
作者: Hwang;Shin-Jia and Chen;Chiu-Chin
貢獻者: Department of Computer Science and Information Engineering, TamKang University;Department of Information Management, Chaoyang
University of Technology Wufeng
關鍵詞: Digital signature;proxy signature;threshold proxy signature 日期: 2002-05-16
上傳時間: 2009-12-08T07:38:23Z 出版者: 亞洲大學
摘要: In 2000, Hwang et al. proposed a nonrepudiable threshold proxy
signature scheme to improve Sun’s scheme. In this paper, a new attack is proposed to show that, both in Hwang et al.’s and Sun’s schemes, the threshold proxy signatures can be forged by the cooperation of only one proxy signer and the original signer.