Analytic study of data security in Cloud Computing using Cryptography

Cloud computing is a platform for expanding capabilities and developing potentialities dynamically without employing new infrastructure, personnel or software systems. Cloud computing help business to improves their organization by using the services the cloud provider offer such as shared network, valuable resources bandwidth, software and hardware in a cost effective manner. In addition cloud computing originated from a commercial enterprise concept and developed into a flourishing IT invention. Security is an important factor of cloud computing to ensure that the client data is placed in a secure place. These days regarding to the high demand on using the cloud computing services for storing and processing data, these is awareness about the information security and cloud computing. In this research paper, we are focusing on what encryption a client need before choosing a cloud provider, because good encryption will help you to protect your data when you share it or use it, but if it is not consider before the client will hand up losing data, paying more money to cloud provider because the encryption offering by the cloud doesn’t much with his need. Here we are going to compare two encryption technology – Symmetric (DES and AES), asymmetric(RSA) algorithm. We have found that the encryption needed will depend on the confidentiality of your data, if the data confidentiality is high you will need a strong encryption such as RSA. If not you will need DES as encryption, so analyzing your data confidentiality is very important before deciding on which encryption to take.