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Erschienen in:
2012 | OriginalPaper | Buchkapitel
A General Transformation from KP-ABE to Searchable Encryption
verfasst von : Han Fei, Qin Jing, Zhao Huawei, Hu Jiankun
Erschienen in: Cyberspace Safety and Security
Verlag: Springer Berlin Heidelberg
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Users are inclined to share the data in a remote server if no strong security mechanism is in place. Searchable encryption satisfies the need of users to execute a search on encrypted data. But previous searchable encryption method like “public key encryption with keyword search (PEKS)” restricted the data open to certain users, because only the assigned users were able to search on the encrypted data. In this paper we will discuss the relation between Attribute Based Encryption (ABE) and searchable encryption and define a weak anonymity of ABE scheme, named “attribute privacy”. With the weak anonymity, we propose a general transformation from ABE to Attribute Based Encryption with Keyword Search (ABEKS) and a concrete attribute private key-policy ABE (KP-ABE) scheme. We present an ABEKS scheme based on this KP-ABE scheme and permit multi-users to execute a flexible search on the remote encrypted data.