A Survey about Cloud Computing and an Improved Method of Data Security using Watermarking Technique with RSA Algorithm in Cloud Environment

Abstract

Cloud is the next generation platform that affords distributed computing environments and dynamic resource pools. Cloud computing is used to crack the daily computing problems providing a full time solution. But the problem related with cloud computing is the data security and data integrity over the Network. This paper is dealt with data security in the cloud environment using RSA digital signatures and robust reversible watermarking technique. In this research paper, we have to tried to increase the MSE and PSNR value of the Decrypted and De-watermarked image in order to prevent more distortion and degradation. In cloud, the cloud service provider or some other person may illegally try to hack customer's information. So, in order to avoid that, customer can encrypt their data by using their own encryption key and watermark their information at the user end. Furthermore, RSA algorithm is the most powerful encryption method used in internet security and Robust Reversible Watermarking technique works good in both lossy and lossless environment. So this combination may generate high PSNR value with minimum mean square error.