Public Key Encryption with Keyword Search Based on K-Resilient IBE
Public Key Encryption with Keyword Search Based on K-Resilient IBE
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DOI：
10.1007/978-3-540-74484-9_95
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发表时间：
2006-05
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影响因子：
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通讯作者：
Dalia Khader
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文献类型：
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作者：
Dalia Khader
一封加密的电子邮件从Bob发送到Alice。网关想要检查某个关键字是否存在于电子邮件中，或者出于某种原因（例如路由）。尽管如此，Alice不希望电子邮件被除她之外的任何人解密，包括网关本身。这是一个需要使用关键字搜索的公钥加密（PEKS）的场景。本文构造了一种新的基于关键字搜索的K-弹性公钥加密方案（KR-PEKS）。新方案在没有随机预言机的情况下，在选择关键字攻击下是安全的。在KR-PEKS的构造中使用了从基于身份的加密构造具有关键字搜索的公钥加密的能力。新方案的安全性通过证明所使用的IBE具有密钥保密性的概念得到了证明。然后，该方案以两种不同的方式进行修改，以满足以下各项：第一次修改是为了启用多个关键字搜索，另一次是为了消除对安全通道的需求。
An encrypted email is sent from Bob to Alice. A gateway wants to check whether a certain keyword exists in an email or not for some reason (e.g. routing). Nevertheless Alice does not want the email to be decrypted by anyone except her including the gateway itself. This is a scenario where public key encryption with keyword search (PEKS) is needed. In this paper we construct a new scheme (KR-PEKS) the K-Resilient Public Key Encryption with Keyword Search. The new scheme is secure under a chosen keyword attack without the random oracle. The ability of constructing a Public Key Encryption with Keyword Search from an Identity Based Encryption was used in the construction of the KR-PEKS. The security of the new scheme was proved by showing that the used IBE has a notion of key privacy. The scheme was then modified in two different ways in order to fulfill each of the following: the first modification was done to enable multiple keyword search and the other was done to remove the need of secure channels.