Abstract

Data deduplication is one of the techniques which used to solve the repetition of data.The deduplication techniques are usually used in the cloud server for reducing the space of the cloud storage.To prevent the unauthorized use of data accessing and create duplicate data on cloud the encryption technique to encrypt the data before stored on cloud server.It consists two types of deduplications methods are available one is file name based and another one is file content based in the first method, we are not possible to process because same filename having different content and second method takes more time for content based search. To overcome the problem we are going to implement side data deduplication system, before upload the file to server. We first stores the file hash code in client side, Before uploading file the client machine it convert the file to hash code and checks temporary client chunks, if the hash code is same the file will not process to main server else if the hash code is different the files will upload to server.We make the initial attempt to officially address the problem of authorized data deduplication method. Different from traditional deduplication systems,in additional we are using the secret sharing scheme and shows that it incurs small encoding and decoding overhead compared to the network transmission overhead in the regular upload/download operations.