Data Security and Performance Improvement using Bandwidth Analysis in Cloud

With the popularity of outsourcing data to the cloud, it is important to protect the privacy of data and enable the user to easily manage the data at the same time. To improve the security, specification based proxy re-encryption algorithm are used to secure the content of cloud users. This makes use of modern cryptographic algorithm to protect data when owner send data to the cloud. Modern cryptographic algorithms are used to protect the authorization model in order to avoid the CSP being able to access the data without data owner permission. Concretely, the solution is based on Proxy Re-Encryption (PRE), Specification-Based Encryption (SBE), and Specification-Based Proxy Re-Encryption (SBPRE). Performance improvement is one of the major and important part in cloud computing. The objective of performance improvement is to increase the zero downtime of the processor. We balance the performance in cloud using virtualization based on bandwidth analysis. This determines that when cloud user send request to server, it provide high throughput to cloud user and zero downtime.