Enhancing Biometric Security Using Watermarking

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Enhancing Biometric Security Using Watermarking
By Shivankush Aras
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What is Watermarking?

• Biometric data is not replaceable and is not
  secret. A biometric system is also prone to
  several types of attacks which calls for data
  authentication using information hiding
  techniques.2
• One of the data hiding technique is
  Watermarking which means embedding biometric
  information into data that should be
  imperceptible but unremovable.
• It helps in avoiding the replay attacks that can
  take place in the communication channel in the
  biometric systems between various components.

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Project Description

• Watermarking for this project can be described as
  embedding the minutiae information of the
  fingerprints in the host data (e.g. synthetic
  fingerprints, face etc) so as to protect the
  intellectual properties of the original data.
• It uses Steganography ( covered writing) for
  developing an invisible watermark for protecting
  the minutiae data and help in increasing security
  of biometric data exchange.

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Techniques to be used

• The general watermarking techniques to be used in
  the project include the following 1
• 1. Spatial domain methods
• The pixel values in image channel are changed -
  like gradient orientation analysis or preserving
  singular points.
• 2. Spectral-transform domain methods
• Watermark signal is added to the host image in
  the transform domain. Eg. FullFrame DCT Domain

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Outline of the System
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References

• 1. Hiding fingerprint minutiae in images by
  A.K. Jain and U. Uludag. Proc. of Third Workshop
  on Automatic Identification Advanced Technologies
  (AutoID), pp. 97-102, Tarrytown, New York, March
  14-15, 2002.
• 2. Information Hiding Techniques for
  Steganography and Digital Watermarking, by M.
  Kutter and F. Hartung Artech House, 2000.