Methodologies For Power Analysis Attacks On Hardware Implementations Of Aes
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Methodologies for Power Analysis Attacks on Hardware Implementations of AES
"Side Channel Attacks (SCA) exploit weaknesses in implementations of cryptographic functions resulting from unintended inputs and outputs such as execution timing, power consumption, electromagnetic radiation, thermal and acoustic emanations. Power Analysis Attacks (PAA) are a type of SCA in which an attacker measures the power consumption of a cryptographic device during normal execution. An attempt is then made to uncover a relationship between the instantaneous power consumption and secret key information. PAAs can be subdivided into Simple Power Analysis (SPA), Differential Power Analysis (DPA), and Correlation Power Analysis (CPA). Many attacks have been documented since PAAs were first described in 1998. But since they often vary significantly, it is difficult to directly compare the vulnerability of the implementations used in each. Research is necessary to identify and develop standard methods of evaluating the vulnerability of cryptographic implementations to PAAs. This thesis devices methodologies for performing PAAs on hardware implementations of AES. The process is divided into identification, extraction, and evaluation stages. The extraction stage is outlined for both simulated power consumption waveforms as well as for waveforms captured from physical implementations. An AES encryption hardware design is developed for the experiment. The hardware design is synthesized with the Synopsys 130-nm CMOS standard cell library. Simulated instantaneous power consumption waveforms are generated with Synopsys PrimeTime PX. Single and multiple-bit DPA attacks are performed on the waveforms. Improvements are applied in order to automate and improve the precision and performance of the system. The attacks on the simulated power waveforms are successful. The correct key byte is identified in 15 of the 16 single-bit attacks after 10,000 traces. the single-bit attack which does not uniquely identify the correct key byte becomes successful after 15,000 or more traces are applied. The key byte is found in 36 of the 38 multiple-bit attacks. The main contribution of this work is a methodology and simulation environment which can be used to design hardware which is resistant to PAA and determine and compare vulnerability."--Abstract.
Advances in Cryptology - CRYPTO '99
Author: Michael Wiener
language: en
Publisher: Springer Science & Business Media
Release Date: 1999-07-28
This book constitutes the refereed proceedings of the 19th Annual International Cryptology Conference, CRYPTO '99, held in Santa Barbara, California in August 1999. The 38 revised full papers presented were carefully reviewed and selected from a total of 167 submissions. Also included is an invited survey paper. The papers are organized in topical sections on public-key cryptanalysis, secure communication and computation, distributed cryptography, secret-key cryptography, message authentication codes, traitor tracing, differential power analysis, signature schemes, zero knowledge, asymmetric encryption, electronic cash, and protocols and broadcasting.
The Twofish Encryption Algorithm
The first and only guide to one of today's most important new cryptography algorithms The Twofish Encryption Algorithm A symmetric block cipher that accepts keys of any length, up to 256 bits, Twofish is among the new encryption algorithms being considered by the National Institute of Science and Technology (NIST) as a replacement for the DES algorithm. Highly secure and flexible, Twofish works extremely well with large microprocessors, 8-bit smart card microprocessors, and dedicated hardware. Now from the team who developed Twofish, this book provides you with your first detailed look at: * All aspects of Twofish's design and anatomy * Twofish performance and testing results * Step-by-step instructions on how to use it in your systems * Complete source code, in C, for implementing Twofish On the companion Web site you'll find: * A direct link to Counterpane Systems for updates on Twofish * A link to the National Institute of Science and Technology (NIST) for ongoing information about the competing technologies being considered for the Advanced Encryption Standard (AES) for the next millennium For updates on Twofish and the AES process, visit these sites: * www.wiley.com/compbooks/schneier * www.counterpane.com * www.nist.gov/aes Wiley Computer Publishing Timely.Practical.Reliable Visit our Web site at www.wiley.com/compbooks/ Visit the companion Web site at www.wiley.com/compbooks/schneier