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Cloud storage access control is very important for the security of outsourced data, where Attribute-based Encryption (ABE) is regarded as one of the most promising technologies. Current researches mainly focus on decentralized ABE, a variant of multi-authority ABE scheme, because conventional ABE schemes depend on a single authority to issue secret keys for all of users, which is very impractical...
This article adopts the method of role mapping, which is based on semantic to solve the problem how to access control in information integration. For the algorithm of single semantic similarity is not good in improving accuracy of similarity, a noble algorithm model is proposed, which calculates semantic similarity between concepts taking many impressive factors in ontology hierarchical relationship...
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