Key-Aggregate Cryptosystem for Scalable Data Sharing In Cloud Storage

Abstract

But in now a day’s all cloud computing applications so many data privacy problems are raised. So many data privacy issues are in cloud computing. These data privacy issues are overcome by provide authentication for users and server. If any unexpected privileges to users it occurs some data loss problems. These data privacy issues are occurred in group shared data applications in cloud computing environment. In group data sharing applications different virtual machines are assigned to different clients and all clients are connected to single physical machine. In this scenario providing confidentiality and privacy to shared data in different customers. In this applications using cryptographic techniques to provide security for data. 

In cloud computing data sharing functionality is very important. Data owners upload data in cloud server. In normal existing systems directly store original data but third party hackers hack the data and modify the data eaves droppers and tampering attacks are very high in cloud applications. So that’s why in present cloud data share applications using encryption and decryption techniques provide security for data. Data owners upload data in cloud server before uploading the data is encrypted by using any cryptographic algorithm and stored in cloud server. If customers want to download data in that data owners share private key to particular customers. Based on private key customers decrypt the data and download original readable format of data from cloud server.