Verification of Data Reliability and Secure Service for Dynamic Data in Cloud Storage

Cloud computing has been the genuine solution to the rising storage costs of IT Enterprises. The cost of data storage devices is too high rate at which data is being gen erated , where the enterprises or individual u sers to frequently update their hardware or software . The data outsourced to the cloud would help in reducing the maintenance. The user’s data are moved from cloud to large d ata centers, which are located remo tely which does not have control over it. Hence there is a security breech which has to be resolved . To address this issue, we propose an effective method to achieve secure and dependable cloud storage by using distributed storage integrity auditing mechan ism , which incorporate homomorphic token and distributed erasure - coded data for dynamically storing data. The proposed design allows the user with lightweight communication and computation cost. To maintain reliable cloud storage correctness , and to locate the m isbehaving server in which the data are frequently changing in cloud. It is an efficient method for dynamic operation which include erase, append, and block modification and it very effective in fighting against server colluding attacks, byzantine fa ilure, malicious data block modifications.