• AKSHAY SHARDA
• AMIT CHHABRA

Cloud computing provides the resources to the clients on pay per use basis. Cloud computing resources including storage is heavily used by clients. The service level agreement is maintained for ensuring the service availability to the users. As more and more users interact with the cloud computing resources, risk of security arises. In order to tackle the issue, security mechanisms including encryption is used within cloud computing. This paper presents comparative study of techniques used to preserve space and provide security as well. Primary stress is paid towards the deduplication mechanism used to ensure conservation of space and also secure transmission of data at server end. Techniques include block level deduplication, message level deduplication and bit level deduplication. The performance analysis indicates better results of bit level deduplication in terms of space conservation and key size.

Cloud security, Encryption, space conservation, key size

"DEDUP: COMPARATIVE ANALYSIS OF CLOUD SECURITY AND SPACE CONSERVATION MECHANISMS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.350-356, May-2019, Available :http://www.jetir.org/papers/JETIR1905I52.pdf

"DEDUP: COMPARATIVE ANALYSIS OF CLOUD SECURITY AND SPACE CONSERVATION MECHANISMS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp350-356, May-2019, Available at : http://www.jetir.org/papers/JETIR1905I52.pdf