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    題名: Remarks on Some Proxy Signature Schemes
    作者: Yen, Sung-Ming;Hung, Chung-Pei;Lee, Yi-Yuan
    貢獻者: 淡江大學電機工程學系
    關鍵詞: 代理簽章機制;代理簽章者;密碼分析;公開金匙;偽造式攻擊;Proxy Signature Scheme;Proxy Signer;Cryptanalysis;Public Key;Forgery Attack
    日期: 2000-12
    上傳時間: 2014-02-13 11:14:15 (UTC+8)
    摘要: In 1996, a new category of signature scheme called a proxy signature was proposed by Mambo, Usuda, and Okamoto. The proxy signature scheme allows a designated person, called a proxy signer, to sign on behalf of an original signer. In Mambo's paper, one kind of cryptanalysis on their scheme was considered. In this paper, it will be shown that the reported attack in Mambo's paper is not practical and a simple counter-measure can be easily developed. The proxy signature scheme plays the role in many practical applications and receives great attention after it was proposed. In 1999, Sung and Hsieh developed an enhanced version of proxy signature scheme. However, it will be proven that the Sung-Hsieh scheme is not secure. A simple modified version will be suggested.
    關聯: Proceedings of the 2000 ICS:Workshop on Cryptology and Information Security,頁54-59
    顯示於類別:[電機工程學系暨研究所] 會議論文


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