Studying Security of Data in Cloud Computing Through Cryptographic Approach

Cloud computing is a set of IT services offered to users over the WWW on a rented base. Cloud computing has many advantages such as flexibility, efficiency, scalability, integration, and capital reduction. Moreover, it provides an advanced virtual space for organizations to deploy their applications and to run their systems. For secure communication over Cloud network, data can be protected by the method of encryption. Encryption exchanges that data by any encryption algorithm using the key in twisted form. Only user can access the key used to decrypt the encrypted data. The purpose of encryption is used to preventing leak or secrecy in communications. Encryption algorithms play a huge role in providing data security against bad and malicious attacks. This paper studies the basic concepts and analyzes the essentials of data security issues pertaining to Cloud Computing. Then we elaborate on each issue by discussing its nature. Specifically, we emphasize on issues of protecting data such as: data confidentiality, data integrity, data availability, securing data access, data auditing, enforcing the regulations and compliances regarding to data security and privacy.