Abstract
In this paper, we present a new attack on RSA when the public exponent is short, for instance 3 or 216+1, and when the classical exponent randomization is used. This attack works even if blinding is used on the messages.
From a Simple Power Analysis (SPA) we study the problem of recovering the RSA private key when non consecutive bits of it leak from the implementation. We also show that such information can be gained from sliding window implementations not protected against SPA.
Keywords
- RSA cryptosystem
- sliding window methods
- exponent randomization
- Simple Power Analysis
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Fouque, PA., Kunz-Jacques, S., Martinet, G., Muller, F., Valette, F. (2006). Power Attack on Small RSA Public Exponent. In: Goubin, L., Matsui, M. (eds) Cryptographic Hardware and Embedded Systems - CHES 2006. CHES 2006. Lecture Notes in Computer Science, vol 4249. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11894063_27
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DOI: https://doi.org/10.1007/11894063_27
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-46559-1
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