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Differential Cache-Collision Timing Attacks on AES with Applications to Embedded CPUs.

Authors :
Bogdanov, Andrey
Eisenbarth, Thomas
Paar, Christof
Wienecke, Malte
Source :
Topics in Cryptology - Ct-rsa 2010; 2010, p235-251, 17p
Publication Year :
2010

Abstract

This paper proposes a new type of cache-collision timing attacks on software implementations of AES. Our major technique is of differential nature and is based on the internal cryptographic properties of AES, namely, on the MDS property of the linear code providing the diffusion matrix used in the MixColumns transform. It is a chosen-plaintext attack where pairs of AES executions are treated differentially. The method can be easily converted into a chosen-ciphertext attack. We also thoroughly study the physical behavior of cache memory enabling this attack. On the practical side, we demonstrate that our theoretical findings lead to efficient real-world attacks on embedded systems implementing AES at the example of ARM9. As this is one of the most wide-spread embedded platforms today [7], our experimental results might make a revision of the practical security of many embedded applications with security functionality necessary. To our best knowledge, this is the first paper to study cache timing attacks on embedded systems. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISBNs :
9783642119248
Database :
Complementary Index
Journal :
Topics in Cryptology - Ct-rsa 2010
Publication Type :
Book
Accession number :
76846961
Full Text :
https://doi.org/10.1007/978-3-642-11925-5_17