Eviction Bit and Inclusive Cache Based Replacement Policy for Side Channel Attack

Modern Cloud Computing Architecture shares physical resources throughout diverse programs so as to maximize the efficiency based on area, energy, and cost. In the most widelyused environment, where each core has more than single level private caches, and shares an inclusive lower-level cache with all the other cores. Regrettably, sharing causes a hazard to security, though procedures are completely remote on rational level, employing a physical resource among them generally tells that single procedures resource usage outline could be witnessed by outsiders. Cache replacement policies are one of the prevalently employed countermeasures that considerably impact the performance of side channel attacks in cloud computing. In this paper, a new replacement scheme is suggested to safeguard in contrast to these conflict side channel attack known as Eviction bit and Inclusive Cache based Replacement policy. An Eviction Bit is assigned to each cache line that is targeted for replacement and the detection of inclusive cache is done. These two steps added increased the cache replacement policy performance efficiency. The experimental results are performed on 8 different cores where 7 cores are victim and 1 is a spy core that seeks the confidential information of victim. This showed that the proposed approach has better performance efficiency compared to existing SHARP and Hybrid mitigation technique.