TECHNOLOGY Improving Security and Efficiency in Distributed Data Sharing and Data Leakage Detection System
A. Antony Viswasa Rani · 2013
Many data hiding techniques have recently been an alyzed as they could help to manage part of the sec urity rights. The randomization is expected to increase t he security of the system and also increase the cap acity. One of the most challenging issues in data sharing systems is the enforcement of access policies and the supp ort of policies updates. Cipher text policy attribute-based encrypt ion (CPABE) is becoming a promising cryptographic solution to this issue. Among the general framework of data hid ing, key generation plays an vital role with truste d key generation center in order to select keys and trans port those keys to all communication entities secre tly. In key generation the major drawback which is called as th e key escrow problem and in my proposed system it is overcome by Free key issuing protocol which is constructed u sing the secure two-party computation between the k ey generation center and the data storing center. The confidentiality of this transformation in data will be theoretically secured by providing authentication for transferrin g keys which are being generated. In my proposed system by applying encryption in the data sharing system intr oduces another challenge with regard to the user re vocation, since the access policies are defined only over the attri bute universe. The efficiency and security analyses indicate that the proposed scheme is efficient to securely manage the data distributed in the data sharing system.