A Survey on Secure Data Sharing and Collaboration Approaches in Cloud Computing

Cloud Computing technology is increasingly patronized by both organizations and individuals because of its ability to provide users with on-demand, flexible, reliable and low-cost services. But there are many security issues when we handle and share data on cloud due to data outsourcing, data loss and multitenancy model. To ensure secure sharing of data and collaboration we discuss Identity Based Encryption (IBE), Attribute Based Encryption (ABE), Proxy Re-encryption Scheme, Hybrid Attribute Based Encryption and Proxy Re-encryption Scheme (Hybrid ABE& PRE).