Secure Data Sharing Using Cryptography in Cloud Environment

Abstract

Cloud computing is rapidly growing due to the provisioning of elastic, flexible, and on-demand storage and computing services for users. In cloud based storage concept, data owner does not have full control over own data because data controlled by the third party called cloud service providers (CSP). Data security is challenging problem when data owner shares own data to another known as data sharer on cloud. Many researchers have addressed this issue by cryptography with different encryption schemes that provides secure data sharing on cloud. Here, we propose system model for secure data sharing on cloud with intension to provides data confidentiality, access control of share data, removes the burden of key management and file encryption/decryption by users, support dynamically changes of users membership and owner should not be always online when the user wants to access the data.