Fault Detection Countermeasures using AES

Abstract

For security purpose, cryptography method is implemented through which communicated data is secured. Advanced Encryption Standard (AES) is the first choice for many critical applications. Federal Information Processing Standard (FIPS) consisting AES tool which is cryptographic algorithm used to secured electronic data. Implementations of the Advanced Encryption Standard (AES) has been used in various applications data-telecommunications, finance and networks that require low power consumptions, low cost design, less delay and specially it should be more secured. In this paper, the implementation details of the AES 128-bit Encryption and Decryption is presented. We will conduct a fault injection attack against the unprotected AES. Moreover we proposed a fault detection scheme for the AES. AES can be programmed in software or built with pure hardware. However Field Programmable Gate Arrays (FPGA) offer a quicker, more customizable solution. The protected AES has been implemented on Xilinx Nexus-3 FPGA. Its fault coverage, area overhead, frequency degradation, power and throughput have been compared. and it is shown that the proposed fault detection scheme allows maximum fault coverage and implemented design have low area, less hardware requirement and is more power efficient.