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Side Channel Attack Resistant Implementation of Multi-Power RSA using Hensel Lifting
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Abstract: | Multi-Power RSA [1] is a fast variant of RSA [2] with a small decryption time, making it attractive for implementation on lightweight cryptographic devices such as smart cards. Hensel Lifting is a key component in the implementation of fast Multi-Power RSA Decryption. However, it is found that a naive implementation of this algorithm is vulnerable to a host of side channel attacks, some of them powerful enough to entirely break the cryptosystem by providing a factorisation of the public modulus $N$. We propose here a secure (under reasonable assumptions) implementation of the Hensel Lifting algorithm. We then use this algorithm to obtain a secure implementation of Multi-Power RSA Decryption. |
BibTeX
@misc{eprint-2008-18045, title={Side Channel Attack Resistant Implementation of Multi-Power RSA using Hensel Lifting}, booktitle={IACR Eprint archive}, keywords={implementation / Side Channel Attacks}, url={http://eprint.iacr.org/2008/368}, note={ varad.kirtane@gmail.com 14116 received 25 Aug 2008}, author={Varad Kirtane and C. Pandu Rangan}, year=2008 }