[HGI-News] Gleich: HGI Seminar, F. Armknecht: "Algebraic Attacks on Stream Ciphers"

[Newsletter des Horst Görtz Instituts]

Hallo,

im Rahmen des HGI-Seminars "Aktuelle Themen der IT-Sicherheit" wird  
heute der folgende Vortrag angeboten:

Dr. Frederik Armknecht, (Lehrstuhl für Systemsicherheit, Ruhr Universität Bochum)
 "Algebraic Attacks on Stream Ciphers "

Zeit: Donnerstag, den *13. Dezember um  11.00* Uhr
Raum: IC 4/161.

Alle Interessierte sind herzlich eingeladen!


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Zusammenfassung:

Due to their efficency, stream ciphers are widely used in practice (e.g., mobile 
phones) to ensure the secrecy of transmitted data. Modern cryptographic 
techniques made it possible to improve the resistance against well known attacks 
like correlation attacks. 
In 2002, a new kind of attack was proposed: 
algebraic attacks. As opposed to other attacks, the effort of algebraic attacks 
is only polynomial in the key size if certain conditions are met. Consequently, 
they proved to be more successful against certain stream ciphers than all other 
kind of attacks known before (e.g., against the keystream generator used in the 
Bluetooth standard). 
The talk gives an introduction to the field of algebraic attacks and points out some developments. 

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Informationen über die nächsten geplannten Vorträge im Rahmen des
HGI-Seminars sind auch im Web zu finden:
http://www.hgi.rub.de/deutsch/lehrangebot/seminar/ws200708.html

Gruß,
Biljana Cubaleska