Improved cloud security trust on client side data encryption using HASBE and Blowfish

Cloud computing has emerged as one of the most authoritative paradigms in the IT industry. In such area confidentiality, flexibility and access control of data are to be considered. Anyhow the data owners and service providers will not be on the same domain, the data will be stored in storage by the service providers. Most of the enterprises use firewalls to protect data against intruders,that they have stored in their internal storage. In order to build the belief in the development of cloud computing the cloud providers must defend the user data from unauthorized access and exposure. The best approach is encrypting the data on client side before storing it in cloud storage, however, this technique has a much infirmity from the client side in terms of key management, maintenance perspective, etc. Other way could be this kind of security service like Hierarchical Attribute Set Based Encryption, encryption/decryption service if provided by same cloud storage provider, the data negotiating cannot be ruled out since same provider has access to both storage and security service. Customer relationship management for business model that is driven by the type of software as a service method in the cloud. Implementing the scheme and showing that it is both efficient and flexible in dealing with access control for subcontracted data and encryption/decryption operations shows from top to bottom protected and operative way for retrieving data in a cloud environment.