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Erschienen in:
2009 | OriginalPaper | Buchkapitel
Exponent Recoding and Regular Exponentiation Algorithms
verfasst von : Marc Joye, Michael Tunstall
Erschienen in: Progress in Cryptology – AFRICACRYPT 2009
Verlag: Springer Berlin Heidelberg
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This paper describes methods of recoding exponents to allow for regular implementations of
m
-ary exponentiation algorithms. Recoding algorithms previously proposed in the literature do not lend themselves to being implemented in a regular manner, which is required if the implementation needs to resist side-channel attacks based on simple power analysis. The advantage of the algorithms proposed in this paper over previous work is that the recoding can be readily implemented in a regular manner. Recoding algorithms are proposed for exponentiation algorithms that use both signed and unsigned exponent digits.