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    題名: Cryptanalysis of Nonrepudiable Threshold Proxy Signature Schemes with Known Signers
    作者: Hwang, Shin-jia;Chen, Chiu-chin
    貢獻者: 淡江大學資訊工程學系
    關鍵詞: digital signature;proxy signature;threshold proxy signature
    日期: 2003-04
    上傳時間: 2010-03-26 19:13:59 (UTC+8)
    出版者: Vilnius: Matematikos ir Informatikos Insititutas, Vilniaus Universitetas
    摘要: Sun's nonrepudiation threshold proxy signature scheme is not secure against the collusion attack. In order to guard against the attack, Hwang et al. proposed another threshold proxy signature scheme. However, a new attack is proposed to work on both Hwang et al.'s and Sun's schemes. By executing this attack, one proxy signer and the original signer can forge any valid proxy signature. Therefore, both Hwang et al.'s scheme and Sun's scheme were insecure.
    關聯: Informatica 14(2), pp.205-212
    顯示於類別:[資訊工程學系暨研究所] 期刊論文

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