tailieunhanh - Secure access policy schema using multiple cloud authorities

In this project, we propose a novel heterogeneous framework to remove the problem of single-point performance bottleneck and provide a more efficient access control scheme with an auditing mechanism. | ISSN: 2249-5789 B Haritha Sai et al, International Journal of Computer Science & Communication Networks,Vol 8(4),18-24 Secure Access Policy Schema using Multiple Cloud Authorities B. Haritha Sai M. Tech, Department of CSE, Shri Vishnu Engineering College for Women (A), Vishnupur, Bhimavaram, West Godavari District, Andhra Pradesh. Salem Raju Associate Professor Department of CSE Shri Vishnu Engineering College for Women (A), Vishnupur, Bhimavaram, West Godavari District, Andhra Pradesh. Abstract—Data access control is a challenging issue to generate secret keys for legitimacy verified users. in public cloud storage systems. Hierarchical Unlike other multi authority access control schemes, Attribute Based Encryption (HABE) has been each of the authorities in our scheme manages the adopted as a promising technique to provide flexible, whole attribute set individually. To enhance security, fine-grained and secure data access control for cloud we also propose an auditing mechanism to detect storage servers. which AA (Attribute Authority) has incorrectly or However, in the existing HABE schemes, the single maliciously performed the legitimacy verification attribute authority must execute the time-consuming procedure. Analysis shows that our system not only user guarantees the security requirements but also makes with honest-but-curious legitimacy verification cloud and secret key distribution, and hence it results in a single-point great performance improvement on key generation. performance bottleneck when a HABE scheme is adopted in a large-scale cloud storage system. Users 1. Introduction may be stuck in the waiting queue for a long period Cloud storage is a promising and important to obtain their secret keys, thereby resulting in low- service paradigm in cloud computing. Benefits of efficiency of the system. Although multi authority using cloud storage include greater accessibility, access control schemes have been .

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