Protecting Your Right: Attribute-Based Keyword Search With Fine-Grained Owner-Enforced Search Authorization in the Cloud

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Provided by: Institute of Electrical & Electronic Engineers
Topic: Cloud
Format: PDF
Search over encrypted data is a critically important enabling technique in cloud computing, where encryption-before-outsourcing is a fundamental solution to protecting user data privacy in the untrusted cloud server environment. Many secure search schemes have been focusing on the single-contributor scenario, where the outsourced dataset or the secure searchable index of the dataset are encrypted and managed by a single owner, typically based on symmetric cryptography. In this paper, the authors focus on a different yet more challenging scenario where the outsourced dataset can be contributed from multiple owners and are searchable by multiple users, i.e. multi-user multi-contributor case.
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