Detection Framework

Stegbreak performance on a 1200 MHz Pentium III:

JPHide speed:
Approximately 15,000 words/s.
300 images with a 577,000 word dictionary take 10 days.
Slow because of expensive key schedule computation.
Only some key schedule caching possible.

Outguess speed:
Approximately 47,000 words/s.
With a large dictionary finds a candidate for almost every image.

JSteg-Shell speed:
Approximately 112,000 words/s.
Fast enough to do a brute-force search of 40-bit key space.