[HGI-News] [Fwd: HGI Seminar am 22. Nov: Dr. Shujun Li]

[Newsletter des Horst Görtz Instituts]

Start: gleich um 11.15 Uhr!


-------- Original-Nachricht --------
Betreff: 	HGI Seminar am 22. Nov: Dr. Shujun Li
Datum: 	Tue, 20 Nov 2007 13:11:05 +0100
Von: 	Biljana Cubaleska <biljana.cubaleska at trust.rub.de>
An: 	hgi-news at lists.ruhr-uni-bochum.de,
its-announce at lists.ruhr-uni-bochum.de



Hallo,

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

*Dr. Shujun Li* (Fern universität Hagen)
"*Multimedia Encryption: Problems, Incompatibilities, and New Perspectives"*

Donnerstag, den 22. November um  11.15 Uhr
Raum: IC 4/161.

Alle Interessierte sind herzlich eingeladen!


==============================================================
Zusammenfassung:

Due to the rapid progress of multimedia and network technologies, multimedia has 
been transmitted more and more frequently via open networks, which leads to 
natural concerns about data security. The simplest way to achieve multimedia 
encryption is to encrypt the whole multimedia stream with any traditional 
cipher. This naive encryption approach has some problems and cannot support some 
special requirements of multimedia encryption. As alternative solutions, since 
1990s, a large number of multimedia encryption algorithms have been proposed, 
some of which are actually specific configurations of traditional ciphers for 
multimedia encryption purposes. Unfortuantely, cryptanalytic results have shown 
security problems of many multimedia encryption schemes, and also trade-offs 
between security and other aspects of the overall performance. Some initial 
research has also shown that the trade-offs are due to some incompatibilities 
between the encryption techniques involved and the syntax format of the 
multimedia encoding standards. Therefore, to ultimately solve some problems with 
multimedia encryption, these incompatibilities have to be studied thoroughly and 
some new ideas have to be introduced on how to design next-generation multimedia 
encoding standards. 

=========================================================

Information 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