Cloud Resource Monitoring System in DOTNET

Abstract:

With the popularity of cloud computing, there have been increasing concerns aboutits security and privacy. Since the cloud computing environment is distributed and untrusted, data owners have to encrypt outsourced data to enforce confidentiality. Therefore, how to achieve practicable access control of encrypted data in an untrusted environment is an urgent issue that needsto be solved. Attribute-Based Encryption (ABE) is a promising scheme suitable for access control in cloud storage systems. This paper proposes a hierarchical attribute-based access control scheme with constant-size ciphertext. The scheme is efficient because the length of ciphertext and the number of bilinear pairing evaluations to a constantare fixed. Its computation cost in encryptionand decryption algorithms is low. Moreover, the hierarchical authorization structure of our scheme reduces the burden and risk of asingle authority scenario. We prove the scheme is of CCA2 security under the decisional q-Bilinear Diffie-Hellman Exponent assumption. In addition, we implement our scheme and analyseits performance. The analysis results show the proposed scheme is efficient, scalable, and fine-grained in dealing with access control for outsourced data in cloud computing.

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