A secure, accountable, and collaborative whiteboard

  • Werner Geyer
  • Rüdiger Weis
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1483)


This paper addresses the design issues and the security concept of the digital lecture board which is an enhanced whiteboard tailored to the specific needs of collaborative types of work, for instance, in computer-based distance education. The development of the digital lecture board emerged from our experiences with synchronous, computer-based distance education in the TeleTeaching projects of the University of Mannheim. For almost two years, we have been using video conferencing tools for transmitting lectures and seminars. These tools prove to be far from optimal for this purpose since they do not take into account the specific requirements of teaching. Security issues such as authentication, secure key exchange, and fast symmetric encryption are almost completely neglected, even though security is extremely important to allow for confidential, private sessions, and billing.


Block Cipher Video Conferencing Brute Force Attack Security Concept Collaborative Service 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • Werner Geyer
    • 1
  • Rüdiger Weis
    • 1
  1. 1.Praktische Informatik IVUniversity of MannheimMannheimGermany

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