Impact of Side Channel Attack in Information Security

Side channel attacks are such attacks that are being carried out on the application devices of a cryptosystem. A cryptosystem consists three algorithms as one for key generation, second for encryption and third for decryption purpose. Generally, the attacker tries to access sensitive data from the application part instead of using the brute force attack. Crucial information may be accessed through leaked data from software, hardware or protocol layers. Through monitoring the power flow or power consumption, timing information and electromagnetic radiation, we may extract the sensitive data from information technology devices to break the system is thus termed as side channel attack. The proposed countermeasures will enable the application device to generate cipher text at the same data rate and same power dissipation by the system. This paper will focus on types of side channel attack, vulnerabilities in side channels as well as its destructive effect and then will try to evaluate the proposed countermeasures.