Robust%20Digital%20Right%20Management%20Scheme%20(DRM)%20for%20Multimedia

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Robust Digital Right Management Scheme (DRM) for
Multimedia

• Anuj Maheshwari (atm2104_at_columbia.edu)
• Victor Sutan (vs2134_at_columbia.edu)

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Presentation Overview

• Introduction
• Project methodology
• Previous work
• Plan of action
• Project Design Flow
• Conclusion
• Questions

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Introduction

• Motivation Facilitating control of ownership of
  multimedia over the internet. Altering existing
  Digital Rights Management (DRM) schemes
• Main issues
• Security
• Robustness
• Efficiency
• Project goal To have a software that would
  provide more security and protection features to
  existing media players.

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Project methodology

• Concepts used
• Watermarking (focusing on Audio)
• Robustness against following attacks
• MPEG Audio compression
• Quantization
• Filtering
• A/D, D/A conversion
• Encryption
• Cryptographic algorithm (look for this)

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Previous work Steinebach 1

• Audio watermarking and partial encryption
  Steinebach2005
• Transparency between watermarked and encrypted
  data
• Need only one key to decrypt / extract watermark
• Lack of robustness against format compression

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Steinebach 2005 (II)
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Previous Work Memon (1998) 2

• Authentication Techniques for Multimedia Content
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• Many techniques for DRM
• Visible / Invisible watermarking (Yeung-Mintzer
  scheme, Wong scheme)
• Fragile / Robust watermarking
• Possible Attacks

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Memon (1998) (II)
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Previous work Bassia (1999) 3

• Robust audio watermarking in the time domain
• Embedding of information in audio
• Robustness against
• Lossy compression
• Quantization and re-quantization
• Low-pass filtering
• Results

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Bassia (1999) (II)
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Plan of Action (I)

• Shortcomings of previous DRM schemes
• Non robust to
• MPEG compression
• Quantization
• Filtering
• Key issues to be remembered
• Security
• Efficiency
• Robustness

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Plan of Action (II)

• Robustness issues to be tackled
• Most papers use LSB method
• Possible problem associated with LSB
• Blind retrieval of watermark information
• Weighted watermarking to resist attacks from
• Compression
• Quantization and Re-Quantization
• Other methods?

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Plan of Action (III)

• Efficiency issues to be tackled
• Level of computation required on server side
  large for encryption and watermark generation
• Attempt to move computation to client machine?
• Alter the format to allow for appending of
  watermark?

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Plan of Action (IV)

• Security issues to be tackled
• Investigate other encryption schemes
• Allow for less intensive computations
• Offer more security than shuffling tables
• Allow for minimum probability of random intrusion

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Project Design Flow
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Project Design Flow (II)
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Challenges Anticipated

• A lot of work has been done
• Security
• Robustness
• Efficiency

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Project timeline

• April
• Week of 11th
• Finalize project flow
• Finalize watermarking and encryption algorithms
• Week of 18th
• Implementation of watermarking and encryption
• Week of 25th
• Rigorous testing
• Preparation of final report
• Preparation for final presentation
• May
• Week of 2nd
• Submission of final report

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Conclusions

• Come up with alternate DRM
• Address the issues of
• Robustness
• Security
• Efficiency

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References

• 1 Stienebach M., Zmudzinski S., Bolke T. Audio
  watermarking and partial encryption Security,
  Steganography and watermarking of multimedia
  conference VII, Processing of SPIE-IST
  Electronic Imaging, SPIE Vol. 5681, March 2005
• 2 Memon N., Vora P. Authentication Techniques
  for Multimedia Content
• , SPIE conference for multimedia systems and
  applications, SPIE Vol. 3528, Nov. 1998
• 3 Bassia P., Pitas I., Robust Audio
  Watermarking in the time domain 1999
• 4 Picard J., Robert A., On the Public Key
  Watermarking Issue Security and Watermarking of
  Multimedia Contents III, Proceedings of SPIE Vol.
  4314, 2001

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Questions anyone?