Jürgen Pulkus
Giesecke & Devrient
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Publication
Featured researches published by Jürgen Pulkus.
cryptographic hardware and embedded systems | 2004
Olaf Neiße; Jürgen Pulkus
Cryptographic algorithms implemented on smart-cards must be protected against side-channel attacks. Some encryption schemes and hash functions like IDEA, RC6, MD5, SHA-1 alternate various arithmetic and boolean operations, each of them requiring a different kind of blinding. Hence the maskings have to be changed frequently. How to switch reasonably between standard arithmetic masking and boolean masking was shown in [2], [3], [5] and [9].
cryptographic hardware and embedded systems | 2016
Jürgen Pulkus; Srinivas Vivek
In recent years, methods to securely mask S-boxes against side-channel attacks by representing them as polynomials over finite binary fields have become quite efficient. A good cost model for this is to count how many non-linear multiplications are needed. In this work we improve on the current state-of-the-art generic method published by Coron–Roy–Vivek at CHES 2014 by working over slightly larger fields than strictly needed. This leads us, for example, to evaluate DES S-boxes with only 3 non-linear multiplications and, as a result, obtain \(25\,\%\) improvement in the running time for secure software implementations of DES when using three or more shares.
Archive | 2004
Olaf Dr. Neisse; Jürgen Pulkus
Archive | 2005
Olaf Dr. Neisse; Jürgen Pulkus
Archive | 2012
Jürgen Pulkus
Archive | 2004
Olaf Dr. Neisse; Jürgen Pulkus
Archive | 2011
Markus Bockes; Jürgen Pulkus
Archive | 2017
Hermann Drexler; Sven Bauer; Jürgen Pulkus
Archive | 2015
Jürgen Pulkus
Archive | 2015
Jürgen Pulkus