Das Seminar wird von den Lehrstühlen IT-Sicherheit & Cryptography (ITSC, Prof. Dobbertin), Kommunikationssicherheit (COSY, Prof. Paar) und Netz- & Datensicherheit (NDS, Prof. Schwenk) organisiert.

Das Seminar findet in der Regel jede Woche montags um 13:00 c.t. statt. Die Vorträge werden zwischen dem NA-5/64 (Mathematik) und dem IC-4/39 (E-Technik) an der RUB alternieren. Die Vorträge werden zwischen 30-45 min. dauern.

25. April 2005 Andre Adelsbach, NDS (RUB) CPPM: Broadcast Encryption for Content Protection on Pre-Recorded Media

Andre Adelsbach, NDS (RUB):
CPPM: Broadcast Encryption for Content Protection on Pre-Recorded Media

Broadcast encryption, originally introduced by Amos Fiat and Moni Naor at Crypto '93, is widely considered a mature and important building block to achieve secure and practical content distribution. Originally targeting Pay-TV applications, today, 10 years after its invention, the major application of broadcast encryption is secure media-based content distribution, e.g., as part of the CPPM standard. In my talk I will first give a brief introduction to broadcast encryption and discuss its role for content distribution on physical media. The main part of my talk will discuss the CPPM standard, which is based on broadcast encryption and used to protect the new DVD-Audio media. I will assess CPPM's overall security based on the published specifications and point out options for practical improvements.