Bugtraq: Re: Jetty Session ID Prediction

[Michal Zalewski <lcamtuf () dione ids pl>]

On Tue, 6 Feb 2007, Chris Anley wrote:

> http://www.ngssoftware.com/research/papers/Randomness.pdf
Nice paper, and quite certainly helpful for security testers as far as
showing the weakness of standard library PRNGs to others goes.

> The idea is eventually to have a tool that performs point-and-click
> identification, analysis and prediction of an unknown source of
> "randomness", including LCGs but also more advanced generators such as
> the Mersenne twister and SHA1PRNG.
Now not that I want to be obtrusive than I already am (hi mom!), but
http://lcamtuf.coredump.cx/stompy.tgz can very well tell LCGs from
SHA1PRNGs - that and do a bunch of other tricks ;-)

/mz