Journal Title : International Journal of Modern Trends in Engineering and Science
Volume 03 Issue 07 2016
ISSN no: 2348-3121
Page no: 71-75
Abstract – Off-site data storage is an request of cloud that relieves the customers from focusing on data storage system. However, outsourcing data to a third-party directorial control entails serious security concerns. Data leakage may occur due to attacks by other users and equipment in the cloud. Wholesale of data by cloud service provider is yet another difficulty that is face in the cloud setting. Consequently, high-level of security procedures is required. In this paper, we propose Data safety for Cloud Environment with Intermediate Key Providers (DaSCE), a data security system that provides (a) key management (b) access control, and (c) file secure deletion. The DaSCE utilizes Shamir’s (k, n) threshold scheme to manage the keys, where k out of n shares are required to produce the key. We use multiple key managers, each hosting one share of key. Multiple key managers evade single point of failure for the cryptographic keys. We (a) implement a working prototype of DaSCE and evaluate its recital based on the time consumed during various operations, (b) formally model and cram the working of DaSCE using High Level Petri nets (HLPN), and (c) verify the working of DaSCE use Satisfiability Modulo Theories files (SMT-Lib) and Z3 solver. The results reveal that DaSCE can be efficiently used for security of outsourced data by employing key administration, access control, and file assured deletion.
Keywords— Cloud; Data Security; Key
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