Performance Improvement of Power Analysis Attacks on AES with Encryption-Related Signals

You-Seok LEE  Young-Jun LEE  Dong-Guk HAN  Ho-Won KIM  Hyoung-Nam KIM  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E95-A   No.6   pp.1091-1094
Publication Date: 2012/06/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E95.A.1091
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Cryptography and Information Security
power analysis,  side-channel attack,  security,  

Full Text: PDF(205.9KB)>>
Buy this Article

A power analysis attack is a well-known side-channel attack but the efficiency of the attack is frequently degraded by the existence of power components, irrelative to the encryption included in signals used for the attack. To enhance the performance of the power analysis attack, we propose a preprocessing method based on extracting encryption-related parts from the measured power signals. Experimental results show that the attacks with the preprocessed signals detect correct keys with much fewer signals, compared to the conventional power analysis attacks.