New Approach towards Generation of Automatic Variable Key to Achieve Perfect Security

Realizing the time variant key or variable key from session to session is the key challenge in achieving perfect security [1-2]. Automatic Variable Key (AVK) is a novel approach to realize time variant key. In AVK, key is generated for use between the sender and the receiver in using a simple computation technique as proposed by Bhunia [3-5]. The AVK was widely experimented by other researchers that established the superiority of AVK over a single / fixed key [6-10]. In this paper we propose two new techniques for generating time variant key. Our techniques ensure better randomness among the successive two keys so generated.