A Review on Enhancing Organization Security using Attribute-Based Encryption for Data Sharing

Abstract

With the recent growth of networking, peoples can share their data with others through online, by using social networks or cloud computing but at the same time there has been increasing demand for data security. People would like to make their private data only accessible to the authorized people. In data sharing systems, access policies and the support of policies updates are most challenging issues. Attribute-based encryption (ABE) and Cipher text policy attribute based encryption (CP-ABE) are becoming promising cryptographic solutions to this issue and achives a fine-grained data access control. It enables data owners to define their own access policies over user attributes and enforce the policies on the data to be distributed. The major drawback of these systems is the key escrow problem. The proposed scheme solves the key escrow problem which depends on attribute based encryption technique for the shared data. Paillier Cryptosystem is utilized for encryption of keys for assignment and revocation process while Twofish algorithm is used to encrypt and decrypt stored data of users. Whenever data owner upload personal documents on cloud server, first the keywords will get fetched from the documents and index will be created. Lucene indexing algorithm is used for indexing of keywords. A Blind Storage scheme allows a client to store a set of files on a remote server.