Security Notions for Identity Based Encryption
Security Notions for Identity Based Encryption
复制标题
基于身份的加密的安全概念
DOI：
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复制
发表时间：
2005
期刊：
影响因子：
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通讯作者：
I. Hasuo
中科院分区：
文献类型：
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作者：
D. Galindo;I. Hasuo
抽象的。自从Boneh和富兰克林提出了基于身份的加密方案以来，该方案引起了广泛的关注。到目前为止，文献中只考虑了基于不可恢复性的安全概念，并且还没有研究这些定义是否合适。为此，我们定义了IBE的语义安全性和不可延展性的目标。然后，我们将这些目标与以前在文献中考虑的攻击（完全和选择性身份攻击）相结合所产生的安全概念进行比较，提供一个暗示或分离。值得注意的是，我们表明，最强的安全级别相对于选择性身份攻击（即选择密文安全）并不意味着最弱的全身份安全级别（即单向性）。以全面性的目的，概念的多个消息和/或多个接收器的加密的背景下，IBE的安全性，以及它们与标准的IBE安全概念的关系。所获得的结果证实了对全身份选择密文攻击作为适当的安全概念IBE的不可否认性。
Abstract. Identity Based Encryption (IBE) has attracted a lot of attention since the publication of the scheme by Boneh and Franklin. So far, only indistinguishability based security notions have been considered in the literature, and it has not been investigated whether these definitions are appropriate. For this purpose, we define the goals of semantic security and non-malleability for IBE. We then compare the security notions resulting from combining those goals with the attacks previously considered in the literature (full and selective-identity attacks), providing either an implication or a separation. Remarkably, we show that the strongest security levels with respect to selective-identity attacks (i.e. chosen-ciphertext security) do not imply the weakest full-identity security level (i.e. one-wayness). With the aim of comprehensiveness, notions of security for IBE in the context of encryption of multiple messages and/or to multiple receivers are finally presented, as well as their relationship with the standard IBE security notion. The results obtained substantiate indistinguishability against full-identity chosen ciphertext attacks as the appropriate security notion for IBE.
基于身份的加密方案的安全通知之间的关系
DOI：
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发表时间：
2006
期刊：
Leture Notes in Computer Science 3887
影响因子：
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作者：
N.Attrapadung;Y.Cui;D.Galindo;G.Hanaoka;I.Hasuo;H.Imai;K.Matsuura;P.Yang;Rui Zhang
通讯作者：
Rui Zhang