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題名: | Forgery Attacks on an ID-Based Partially Blind Signature Scheme |
作者: | Tseng, Yuh-Min;Wu, Tsu-Yang;Wu, Jui-Di |
貢獻者: | 數學系 |
關鍵詞: | Security;Partially blind signature;Bilinear pairings;Identity-based |
日期: | 2008-08
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上傳時間: | 2012-07-03T03:45:05Z
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出版者: | IJARCS |
摘要: | A partially blind signature is a variant of the blind signature. The partially blind signature scheme allows a signer to sign a partially blind message that explicitly includes the pre-agreed information. In 2005, Chow et al. first proposed an ID-based partially blind signature scheme with bilinear pairings. ID-based public key systems with bilinear pairings defined on elliptic curves offer a flexible approach to achieve both simplifying the certificate management and reducing the computational cost. However, their scheme is time-consuming for requesters (or clients) with mobile devices. In 2007, Hu and Huang proposed an efficient ID-based partially blind signature scheme based on bilinear pairings. They claimed that the proposed scheme is provably secure under the random oracle model. However, this paper shows that the Hu-Huang scheme suffers from forgery attacks. Index Terms—Security, Partially blind signature, Bilinear pairings, Identity-based. |
關聯: | International Journal of Computer Science, 35(3): 301-304 |
顯示於類別: | [數學系] 期刊論文
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