1 Background 2 Introduction to Power Analysis

Short Description
Cryptography Research, Inc. 607 Market Street, 5th Floor … cryptography.com . Abstract. Cryptosystem designers frequently assume that secrets will …

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Content
Dierential Power Analysis
Paul Kocher, Joshua Jae, and Benjamin Jun
Cryptography Research, Inc.
607 Market Street, 5th Floor
San Francisco, CA 94105, USA.
http://www.cryptography.com
E-mail: fpaul,josh,beng@cryptography.com.
Abstract. Cryptosystem designers frequently assume that secrets will
be manipulated in closed, reliable computing environments. Unfortu-
nately, actual computers and microchips leak information about the op-
erations they process. This paper examines specic methods for analyz-
ing power consumption measurements to nd secret keys from tamper
resistant devices. We also discuss approaches for building cryptosystems
that can operate securely in existing hardware that leaks information.
Keywords: dierential power analysis, DPA, SPA, cryptanalysis, DES
1 Background
Attacks that involve multiple parts of a security system are dicult to predict
and model. If cipher designers, software developers, and hardware engineers do
not understand or review each other’s work, security assumptions made at each
level of a system’s…