PRIVACY PRESERVING THROUGH MEDIATOR IN DECENTRALIZED CIPHERTEXT POLICY ATTRIBUTE BASED ENCRYPTION

Varsha Thanaji Mulik, Shinu Acca Mani, Saritha K, Suraj U Rasal

Abstract: In the previous cryptographic approach, network security is vigorously relied on user attribute based encryption, multiple authorities and cipher text policies to make it more sheltered to some extent. But to seal the lack of security level, cryptography shows keen to enhance the protective approach. Cipher text policy is one of the best cryptographic methods added to enhance the security level in recent networking trends. In this paper, both user attributes and data attributes are used as security credentials. File security is maintained by protecting data and its location. Multiple trusted authorities and Mediators are considered as validation users to make system more secure and reliable. Mediator concept is added to the proposed approach whose role is acting as a middleware between authorities and users for managing user rights. Data is stored in encrypted format and its regarding information can be accessed through the secrete key which is a combination of authority key and mediator key. Decryption speed is enhanced to balance the user waiting and response time. Since there is no storage of any user and data information in authority and mediator the entire data will be hidden. All these approaches enhance the encryption level to make system more secure and highly reliable.

Keywords: Mediator, Trusted Authority, Data Attributes, User Attributes.

DOI: https://doi.org/10.15623/ijret.2016.0506093