The information hiding homepage
digital watermarking & steganography
Until recently, information hiding techniques received very much less
attention from the research community and from industry than cryptography, but
this has changed rapidly. The first
academic conference on the subject was organised in 1996. It was followed by
several other conferences focussing on information hiding as well as
watermarking. The fifth
international workshop on information hiding will be held in
Noordwijkerhout (pronounce node-why-cur-how-t) in October 2002.
The main driving force is concern over protecting copyright; as audio, video
and other works become available in digital form, it may be that the ease with
which perfect copies can be made will lead to large-scale unauthorised copying
which will undermine the music, film, book and software publishing industries.
There has therefore been significant recent research into ‘watermarking’
(hidden copyright messages) and ‘fingerprinting’ (hidden serial numbers or a
set of characteristics that tend to distinguish an object from other similar
objects); the idea is that the latter can be used to detect copyright violators
and the former to prosecute them.
But there are many other other applications of increasing interest to both
the academic and business communities, including anonymous communications,
covert channels in computer systems, detection of hidden information,