Secure Distributed Data using Multi-Cloud
Worud Mahdi Saleh1, Ziyad Tariq Mustafa Al-Ta’i2, Ghassan Sabeeh Mahmood3

1Worud Mahdi Saleh, Student, Department of Computer Science, University of Diayla.
2Ziyad Tariq Mustafa Al-Ta’i, Scholar, Department of Computer Science, University of Diayla.
3Ghassan Sabeeh Mahmood, Scholar, Department of Computer Science, University of Diayla
Manuscript received on January 16, 2020. | Revised Manuscript received on January 23, 2020. | Manuscript published on February 10, 2020. | PP: 2998-3003 | Volume-9 Issue-4, February 2020. | Retrieval Number: L37311081219/2020©BEIESP | DOI: 10.35940/ijitee.L3731.029420
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Abstract: Implementing cloud computing provides many paths for web-based service. But, data security and privacy requirement become an important problem that limits several cloud applications. One of the key security and privacy concerns is the fact that cloud service suppliers have access to data. This concern greatly reduces the usability of cloud computing in many areas, such as financial business and government agencies. This paper focuses on this important issue and suggests a new approach, so cloud providers cannot directly access data. The proposed approach is divided into two sides: upload side and download side. In upload side, there is three stages, at the first stage; the transmitted file is splitted and then encrypted in order to achieve the data security requirement. At the second stage, the splitted data are integrity checked by MD5 algorithm, in order to achieve integrity requirement. At the third stage, the checked splitted data are stored separately in three -clouds, in order to achieve distribution requirement. In download side, also there is three stages. At the first stage, the data is retrieved from the three-clouds. At the second stage, data integrity is performed using MD5. At the third stage, data decryption and merging are done. The proposed approach is successfully implemented on (25 KB) image. The proposed model is successfully implemented in uploading side dependent on shares3 because provide high security with total time of (8.144 sec), and in downloading side with total side of (9.42). 
Keywords:  Multi-cloud, Data Security, Distribution, Integrity
Scope of the Article: Information and data security