Cloud computing is completely about productivity, economy, and corporate agility. But there raises a question how we can commercially attain those benefits if their cloud management solution becomes inefficient, incomplete, and inflexible. Even though there are many aspects in cloud environment. The data security, confidentiality and privacy plays a major role in cloud deployment model. In case of private cloud the identity anonymization and secured data storage becomes essential to address. But we as developers of cloud can maintain the cloud with perfect methods and protocols which make the cloud service delivery more efficient, productive, and agile. In this paper a method for identity anonymization and secure data storage in private cloud using GDS (Group Digital Signature) is proposed and implemented. © 2012 ACM.