Abstract
The Advanced Encryption Standard (AES) defines the most popular block cipher. It is commonly used and often implemented on smart cards. In this paper, we show how a 128-bit AES key can be retrieved by microprobing. Thereby, a probe is placed onto the chip to spy on inner values. Watching one arbitrary bit of the AES State during the first two rounds of about 210 encryptions is enough to reveal the whole key. For special positions of the probe, this number can be reduced to 168. The paper demonstrates that even few information is sufficient for a successful attack on AES.
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Schmidt, JM., Kim, C.H. (2009). A Probing Attack on AES. In: Chung, KI., Sohn, K., Yung, M. (eds) Information Security Applications. WISA 2008. Lecture Notes in Computer Science, vol 5379. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-00306-6_19
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DOI: https://doi.org/10.1007/978-3-642-00306-6_19
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-00305-9
Online ISBN: 978-3-642-00306-6
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