Abstract
Cloud computing is used to store large amount of data because is low cost and flexible but in cloud data security important issue. In this paper we proposed approach encryption or decryption file using algorithm are AES and OTP using Hadoop here we encrypted file within HDFS and decrypted within maptask in existing system encrypted/decryption the usage of AES but report length degree accelerated with the aid of 50% from unique record however now enhance the ratio as length of the encrypted record accelerated by means of 20% from original file length and also we carried out new technique called HDFS.
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