Multimedia and Security Workshop at ACM Multimedia 2002, Juan-les-Pins, France
Jana Dittmann
Petra Wohlmacher
Jessica Fridrich

ACM Multimedia 2002

Multimedia and Security
Workshop at ACM Multimedia
    Juan-les-Pins on the French Riviera,
        Friday, Dec 6th, 2002
Jana Dittmann 1 Jessica Fridrich 2 and Petra Wohlmacher 3

Beside the request from content industries for reliable technologies and protocols for protecting the rights of the works they own, there is an increasing interest in manipulation recognition to ensure media data authentication forced by the electronic signature act and in recognition of hidden communication due to recent anti-terrorist activities. One of the (undesired) effects of the universal availability of effective signal processing tools is the possibility to tamper digital multimedia data or to manipulate the media to embed secret information in order to hide the communication without leaving any trace. This puts the credibility of digital multimedia data in doubt. Especially electronic communication, E-Commerce, and even E-Government, where multimedia data is increasingly used, necessitate electronic signatures allowing originator authentication as well as data authentication. Here, there is a great demand for legal recognition of electronic signatures to provide business and civil services within the digital world. Reliable and accurate detection of steganographic communication could prove vital in the future as the society creates defence mechanisms against criminal and terrorist activities. Fast and reliable identification of the stego-product and estimation of the secret message size and its decoding are among the highest ranking requirements formulated by law enforcement. Watermarking technology is recent and still needs further research, development, and coordinated actions for their efficient use in multimedia systems. The goal of the workshop is to set a platform able to identify key issues to be addressed by future research of manipulation recognition for media data authentication as well as to detect hidden communication channels to motivate this research and to establish fruitful relationships with key actors in the European, US, and Asian countries.  

Based on the previous excellent experience of the last four workshops, the objectives of the workshop are

  • Discussion of authentication technologies, both on the basis of fragile watermarks and combinations of perceptual fingerprints and robust watermarks for digital image, video, and audio data

  • Discussion of reversible watermarking technologies, i.e. technologies where the origi-nal content can be completely restored. As a generalization, there appears to be a considerable interest in reversible watermarking methods with the additional property that embedding commutes with predefined degradation processing. This means that watermark removal after content degradation yields content with minimum degradation. The definition of parameter ranges (robust-ness, security, transparency, capacity, complexity) for different watermarking application areas;

  • Steganalysis as method to detect media manipulations to embed hidden communication channels: Steganographic capacity for various embedding paradigms, identification of steganographic products, estimation of message size and its decoding, universal blind detectors for unknown steganographic methods, practical definition of steganographic security.

  • Discussion of electronic signatures especially focused on ongoing processes of legislation and harmonization, but also definitions of requirements for technical equipment as well as their related security infrastructures, and interoperability aspects of electronic signature products. Particularly within the multimedia area there exist specific requirements.

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The mission of the workshop is to bring together experienced researchers, developers, and practitioners from academia and industry for a discussion of aspects and the impact of digital manipulations and steganographic channels. The workshop reflects the strength and weaknesses of what the multimedia community has to offer to meet the needs of secure multimedia environments. Participants get an excellent overview about what the community has to offer, where the improvements are, and discuss ongoing progress as well as open research problems.

This year, we focused on the topics such as but not limited to 
  • robust and fragile watermarking techniques, watermarking protocols
  • watermarking attacks, quality evaluations and benchmarks
  • conditional access
  • content-based digital signatures
  • legal aspects
  • security in JPEG2000, MPEG-4, MPEG-7 or MPEG21
  • biometrics and multimedia secuirty
  • video and audio crypting
  • new applications and security issues
How to submit? Please see above . The papers (page limit is 4 pages) will be published by ACM in an extra workshop proceeding. There will be a workshop fee. 

More about the ACM Multimedia 2002


Jana Dittmann, Jessica Fridrich, Petra Wohlmacher
„Session leader introduction of participants: Manipulating the Digital World – Challenges and Legal Aspects of Multimedia Cryptography, Steganalysis, and Digital Watermarking“


Jessica Fridrich, Miroslav Goljan, Dorin Hogea
„Attacking the OutGuess“


Kamran Ahsan, Deepa Kundur
“Practical Data Hiding in TCP/IP“
 Gina Fisk, Eric Weigle, Joshua Neil
„On the Limitations of Embedding Data in Immutable Carriers


Jessica Fridrich
„Round table wrap-up; discussion amongst the par-ticipants: The importance of steganalysis, open problems, formulation of relevant future research problems“




Deran Maas, Ton Kalker, Frans Willems, Philips Research
„A Code Construction for Recursive Reversible Data-Hiding“


Jun Tian
„Reversible Watermarking by Difference Expansion“


Maria Grazia Albanesi, Federico Guerrini
„Authentication and Recovery of Digital Images Using Error Correcting Codes“


Klaus Keus, Claus Vielhauer, Jana Dittmann
„Trustworthy User Authentication – a Combination of Handwriting and Electronic Signatures“




Martin Dietze, Sabah Jassim
„The Choice of Filter Banks for Waveletbased Robust Digital Watermarking“


EeChien Chang, Sujoy Roy
„Watermarking with Retrieval Systems“


Nataša Terzija, Markus Repges, Kerstin Luck, Walter Geisselhardt
„Impact of different Reed-Solomon codes on digital watermarks based on DWT“


Break with DEMO : Weijie Lu, Kefei Chen
„Self Authenticating Image“


Paul Judge, Mostafa Ammar
„The Role of Watermarking in Securing Peer-to-Peer Systems“


Charistian Neubauer, Frank Siebenhaar, Martin Steinebach
„AAC Bitstream Watermarking Robustness Assessment“


Yongju Cho, Jinwoo Hong, Jinwoong Kim
„Security System Compliant with MPEG-4 IPMPX“




Andreas Pommer, Andreas Uhl
„Selective Encryption of Wavelet Packet Subband Structures for Secure Transmission of Visual Data“


Andreas Pommer, Andreas Uhl
„Application Scenarios for Selective Encryption of Visual Data“


Rüdiger Grimm, Jürgen Nützel
„Security and Business Models for Virtual Goods“


Round table wrap-up; discussion amongst the par-ticipants: The importance of reliable steganalysis, open problems, formulation of relevant future research problems.

1 Platanista and Applied University Leipzig
Postfach 300066, D-04251 Leipzig, Germany

2 Department of Electrical and Computer Engineering
SUNY Binghamton, Binghamton, NY 13902-6000

3 Regulatory Authority for Telecommunications and Posts
Section Electronic Signature
July 2002