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Security Analysis and Improvement of Hsu et al.'s Threshold Proxy Signature Scheme

並列摘要


In 1999, Sun et al. proposed a new (t, n) threshold proxy signature scheme based on Zhang's threshold proxy signature scheme. But in 2003 Hsu et al. pointed out that Sun's scheme suffered from a drawback and demonstrated an improvement to counter it. In this paper we point out that Hsu's scheme suffers from an insider attack against their scheme. That is, a malicious proxy signer can forge a valid threshold proxy signature on any message. To thwart this attack, some improvements are further proposed.

被引用紀錄


Dlamini, B. M. P. (2013). 歐巴馬政府執政下的美國國家情報總監辦公室(2009-2012) [master's thesis, Tamkang University]. Airiti Library. https://doi.org/10.6846/TKU.2013.00653
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