Hardware Implementation for Fending off Side-Channel Attacks
Yi-Liang Hong, Yui-Kai Weng, Shih-Hsu Huang · 2021
Side-channel attacks (SCAs) are to obtain physical information (e.g., time information, power consumption, electromagnetic leakage) from the physical implementation of a cryptosystem for further cracking the cryptosystem. In this paper, we study the protection to SCAs for the Advanced Encryption Standard (AES) cryptosystem. We add extra circuits (components) to the AES circuit to produce almost equal power consumption (for different key values) without affecting the encryption results. Experimental results show that the approach works well in practice.