DocumentCode :
2833325
Title :
Power amount analysis: Another way to understand power traces in side channel attacks
Author :
Tian, Qizhi ; Huss, Sorin A.
Author_Institution :
Integrated Circuits & Syst. Lab. (ICS), Tech. Univ. Darmstadt, Darmstadt, Germany
fYear :
2012
fDate :
10-12 July 2012
Firstpage :
74
Lastpage :
79
Abstract :
Correlation power analysis, a method aiming to reveal the secrets of a cryptosystem, is based on one fixed time point of the captured power traces, which unveils the largest key dependent information leakage. In this paper, we propose a new power trace model based on communication theory to better understand and to efficiently exploit power traces in side channel attacks. Then, a new attack method denoted as Power Amount Analysis is proposed, which takes more time points into consideration compared to the correlation power analysis. Based on this trace model, we compare and discuss attack results produced by both methods at identical attack conditions. The superior efficiency of the Power Amount Analysis is demonstrated for an AES-128 encryption module. As an additional asset, this method features a high robustness in presence of randomly misaligned power traces.
Keywords :
cryptography; AES-128 encryption module; communication theory; correlation power analysis; cryptosystem; key dependent information leakage; power amount analysis; power trace model; randomly misaligned power traces; side channel attacks; Analytical models; Correlation; Cryptography; Noise; Oscilloscopes; Power demand; Time domain analysis; AES-128 Block Cipher; Correlation Power Analysis; Power Amount Analysis; Power Model; Trace Model;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Digital Information Processing and Communications (ICDIPC), 2012 Second International Conference on
Conference_Location :
Klaipeda City
Print_ISBN :
978-1-4673-1106-9
Type :
conf
DOI :
10.1109/ICDIPC.2012.6257263
Filename :
6257263
Link To Document :
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