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首页> 外文期刊>IEICE Transactions on fundamentals of electronics, communications & computer sciences >New Identity-Based Blind Signature and Blind Decryption Scheme in the Standard Model
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New Identity-Based Blind Signature and Blind Decryption Scheme in the Standard Model

机译:标准模型中基于身份的新盲签名和盲解密方案

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摘要

We explicitly describe and analyse blind hierachical identity-based encryption (blind HIBE) schemes, which are natural generalizations of blind IBE schemes [20]. We then uses the blind HIBE schemes to construct: (1) An identity-based blind signature scheme secure in the standard model, under the computational Diflie-Hellman (CDH) assumption, and with much shorter signature size and lesser communication cost, compared to existing proposals. (2) A new mechanism supporting a user to buy digital information over the Internet without revealing what he/she has bought, while protecting the providers from cheating users.
机译:我们显式描述和分析基于盲分层身份的加密(blind HIBE)方案,这是盲IBE方案的自然概括[20]。然后,我们使用盲HIBE方案来构建:(1)在计算的Diflie-Hellman(CDH)假设下,在标准模型中安全的基于身份的盲签名方案,与之相比,其签名大小更短,通信成本也更低现有提案。 (2)一种新的机制,可支持用户通过Internet购买数字信息而不泄露其购买的商品,同时还可以保护提供者免于欺骗用户。

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