Storage Supporting Secure Deduplication of Encrypted Data in Cloud
International Journal for Research in Applied Science and Engineering Technology
Attribute Based Encryption(ABE) technique is universally used in cloud for storing data. Data providers upload his/her encrypted data in cloud using attribute based encryption technique. But, the standard attribute based encryption technique cannot support secure deduplication. It is very difficult to eliminate duplicate file in cloud. It leads to wastage of bandwidth and memory space in cloud. Due to this, cost of the user is also increased. In this paper, we use hybrid cloud to perform secure
... d to perform secure deduplication where the private cloud detects the duplicate files and the public cloud is responsible for storing the file. The huffman technique is user to compress the data. Our system has two advantages when compare to prior deduplication methods. Firstly, it achieves the standard notion of semantic security. secondly, without sharing decryption key, it shares confidential data with user specific policies. In add with, we put another method to modify one cipher text over cipher policy into cipher text of same plain text without revealing the plain text.