[HGI-News-de] HGI Kolloquium Do, 22.10.: Permutations among the HFE Polynomials von Enrico Thomae

[Newsletter des Horst Görtz Instituts]

Hallo,

im Rahmen des HGI Kolloquiums "Aktuelle Themen der IT-Sicherheit" wird am kommenden *Donnerstag* der folgende Vortrag angeboten:

Enrico Thomae:
* Permutations among the HFE Polynomials *

Termin:
Donnerstag, der 22. Oktober um  11.00 Uhr (*s.t.*)
Raum: IC 4/161

Interessierte sind herzlichst eingeladen!


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Abstract:
The development of the quantum computer is progressing and so the threat for the two most popular asymmetric cryptosystems RSA and ElGamal grows. Even if there is no reason to panic yet, the current program on "IT-Sicherheitsforschung" (by BMI and BMBF) points out, that already today post quantum cryptosystems are of high importance if we want to encrypt data, that are supposed to be secure for more than 20 years. The problem of todays post quantum cryptosystems is, that their key size is too large (McEliece) or their performance is bad (HFE) (or they are even not secure). In order to increase the performance of HFE, it is of great interest to determine the permutation polynomials (and their inverse) among the HFE polynomials proposed by Patarin. If such polynomials are known, there is no need to use perturbations anymore. 
The presentation introduces post quantum cryptography, especially multivariate public key cryptography, and shows the results of my diploma thesis, i.e. how to determine special classes of permutation polynomials among the HFE polynomials and specify their inverse. 
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Vorankündigung: 
12. November 2009: Georg Becker(EmSec), Constructive use of side-channels - 19. November 2009: Mathias Herrmann(CITS), Attacking Power Generators Using Unravelled Linearization ­ 26. November 2009: Stefan Heyse(	EmSec), Coding based crypto for embedded devices: Performance, Sidechannels and Countermeasures ­ 4. Februar 2010:	Florian Kerschbaum(SAP), Security Challenges in Supply Chain Management


Informationen über die nächsten geplanten Vorträge im Rahmen des HGI Kolloquiums sind auch im Web zu finden:
http://www.hgi.rub.de/hgi/hgi-seminar/aktuelles


Viele Grüße,
Georg Becker und Timo Kasper