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Paper 2008/368
Side Channel Attack Resistant Implementation of Multi-Power RSA using Hensel Lifting
Varad Kirtane and C. Pandu Rangan
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.
Metadata
- Available format(s)
- Category
- Implementation
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- Side Channel Attacks
- Contact author(s)
- varad kirtane @ gmail com
- History
- 2008-08-27: received
- Short URL
- https://ia.cr/2008/368
- License
-
CC BY