Projects

An Efficient Time-Bound Hierarchical Key Management Scheme for Secure Broadcasting

                                                   Abstract

In electronic subscription and pay TV systems, data can be organized and encrypted using symmetric key algorithms according to predefined time periods and user privileges and then broadcast to users. This requires an efficient way of managing the encryption keys.

 In this scenario, time-bound key management schemes for a hierarchy were proposed by Tzeng and Chien in 2002 and 2005, respectively. Both schemes are insecure against collusion attacks. In this project, we propose a new key assignment scheme with a tamper device, which is both efficient and secure. Symmetric algorithm cryptography is deployed in this scheme. We also provide the analysis of the scheme with respect to security and efficiency issues.

                                                  Existing System

In the existing system encrypted using symmetric key algorithms according to predefined time periods (predefined key) and user privileges and then broadcast to users. Another way of Encrypted using time-bound key management schemes for a hierarchy were proposed, both schemes are insecure against collusion attacks. In collusion attack with more than one input to the device does not work either.

 

                                                         Proposed System

 In proposed system we used time-bound hierarchical key assignment scheme based on a tamper-resistant device and a secure symmetric algorithm was proposed. This scheme reduces computational load and implementation cost. We propose a new method in this project for access control using cryptography algorithm with a tamper device. This scheme is efficient and secure against existing system. Finally We provide a better key management scheme for broadcasting signals in encrypted form.

 



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