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題名:	Certificateless signatures with message recovery
作者:	Tso, Ray-Lin 左瑞麟
貢獻者:	資科系
關鍵詞:	Bilinear pairing;CDH problem;Certificateless signature;Message recovery;Random oracle model
日期:	2014-04
上傳時間:	2015-06-03 12:33:36 (UTC+8)
摘要:	Digital signatures with message recovery have come into limelight in recent years. Comparing with traditional digital signatures, it has the advantage of small data size of communication and is useful in applications where bandwidth is one of the main concerns. It also surpasses a short signature in the sense of having a randomized signing algorithm instead of a deterministic one. On the other hand, in order to eliminate the use of certificates in traditional public key cryptography and the key-escrow problem in ID-based cryptography, the notion of certificateless cryptography was introduced. Combing both advantages, Tso et al. in 2010 introduced the first certificatelss signature scheme with message recovery. The security of their scheme is based on the k-BDHI assumption - a relatively stronger complexity assumption. In this paper, we propose a new scheme. Our new scheme is more efficient than Tso et al.`s scheme in the signature verification phase. In addition, the security of our new scheme is rigorously proved based on a weak and more classic complexity assumption - the Computational Diffie-Hellman (CDH) assumption. © 2014 International Information Institute.
關聯:	Information (Japan), 17(4), 1559-1573
資料類型:	article
顯示於類別:	[資訊科學系] 期刊論文

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