Cloud data security with hybrid symmetric encryption

Cloud computing provides the facility for large volume data storage and its management. It has enormous capacity for storing many users and individual data simultaneously and provides the flexibility for its retrieval at anytime and anywhere. Today many organizations are migrating towards cloud for its data storage and retrieval because of their complex data management at economical cost and great flexibility. Even though cloud attracting lots of attention still there is prime requirement of security concerns needs to be take care. Cloud is un-trusted third party, holding the data which may be confidential r sensitive. Security and privacy of data is prime concern. In this paper, we proposed a new security model which utilizes the concept of hybrid encryption and decryption to provide a secure and protected environment for cloud data storage. In the proposed model, data owner (DO) outsource the encrypted data at cloud server to make it hidden from intruder and provide only authorized user with the corresponding decryption key to retrieve the original data. Use of hybrid encryption makes the data more protected from any malicious activity and provide a sound and secure system. During encryption or decryption process the concept of symmetric key cryptography is utilize as it is more efficient and fast than public key cryptography.