A Brief Survey on Encryption Schemes in Cloud Environments

For the last two years cloud computing is a important in the IT industry. In cloud computing data owners and service providers are not in the same trusted domain so the Service providers should not be a trusted one and they are all third party.It focuses on a technique to Hierarchical Attribute Set Based Encryption (HASBE); it is proposed by the Cipher Policy attribute-based encryption (CP-ABE).It achieves both flexibility and fine-grained access control of data in cloud not only the scalability. It stores the data in encrypted form for privacy protection. Cloud system is responsible for both tasks on storage and encryption or decryption of data. In this paper I provide a technique called Hierarchical Attribute set based Encryption(HASBE) to give security and fine grained access control to the users of cloud computing . It was an enhancement for the technique called Attribute based Encryption(ABE) which is inflexible to handle complex control