[4592] in cryptography@c2.net mail archive
BSD & /dev/random web page
daemon@ATHENA.MIT.EDU (David Honig)
Tue May 4 13:45:12 1999
Date: Tue, 04 May 1999 10:08:51 -0700
To: (Recipient list suppressed)
From: David Honig <honig@sprynet.com>
I've posted a small collection of my BSD and
crypto-randomness-related pages at
http://www.geocities.com/SiliconValley/Code/4704/
This includes MUST code in C (and a PDF copy of Maurer's paper), How to
instrument BSD with sysctl,How to Verify your IPsec, and studies of
/dev/random. The site collects in a permenant place the hacks
that I've posted in various fora.
I've included a modified BSD random_machdep.c file on the web site
which includes sysctl switches for various parts of
the /dev/random system. With this, I've observed:
By replacing the MD5 hash with an insecure version,
(so you can 'see' into the random pool)
you can monitor, in real-time, the entropy of your
random pool ("cat /dev/urandom | uliscan")
and see the effect of various interrupts
as they temporarily boost the entropy. This study is
in progress.
