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Attribute base Encryption is the cryptographic conducting tool to assurance data owners enduring control above their data in public cloud storage. The proposed ABE plans include one and only power (Authority) to keep up the entire trait (Key) set, which can carry a solitary (single) point bottleneck on both safety and execution. In this way, some(More)
In the above paper, Yang et al. have proposed a multi-authority ciphertext-policy attribute-based encryption-based data access control for cloud storage, in which the authors claimed that the mechanism in dealing with attribute revocation could achieve both forward security and backward security. Unfortunately, our further analysis and investigation show(More)
Data access control is a challenging issue in public cloud storage systems. Ciphertext-policy attribute-based encryption (CP-ABE) has been adopted as a promising technique to provide flexible, fine-grained, and secure data access control for cloud storage with honest-but-curious cloud servers. However, in the existing CP-ABE schemes, the single attribute(More)
Data access control is a challenging issue in cloud storage. Ciphertext-Policy Attribute-based Encryption (CP-ABE) is a potential cryptographic technique to address the above issue, which is able to enforce data access control based on users’ permanent characteristics. However, in some scenarios, access policies are associated with users’ temporary(More)
Industries and individuals outsource database to realize convenient and low-cost applications and services. In order to provide sufficient functionality for SQL queries, many secure database schemes have been proposed. However, such schemes are vulnerable to privacy leakage to cloud server. The main reason is that database is hosted and processed in cloud(More)
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