Simultaneous Authentication and Secrecy in Identity-Based Data Upload to Cloud

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Provided by: Springer Healthcare
Topic: Cloud
Format: PDF
Most existing works to secure cloud devote to remote integrity check, search and computing on encrypted data. In this paper, the authors deal with simultaneous authentication and secrecy when data are uploaded to cloud. Observing that cloud is most interesting to companies in which multiple authorized employees are allowed to upload data, they propose a general framework for secure data upload in an identity-based setting. As it is shown that it is challenging to construct IBSC scheme in the standard model and most IBSC schemes are realized in the random oracle model which is regarded weak to capture the realistic adversaries, they propose a new IBSC scheme simultaneously performing encryption and signature with cost less than the signature-then-encryption approach.
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