fwd: What good is this really going to be?
James H. Cloos Jr.
cloos at jhcloos.com
Sat Dec 5 12:33:22 CET 1998
Is there any chance of using the code in the Math-Trulyrandom Perl
module for platforms w/o a /dev/random? The license for the code in
* Physically random numbers (very nearly uniform)
* D. P. Mitchell
* Modified by Matt Blaze 2/95
* The authors of this software are Don Mitchell and Matt Blaze.
* Copyright (c) 1995 by AT&T.
* Permission to use, copy, and modify this software without fee
* is hereby granted, provided that this entire notice is included in
* all copies of any software which is or includes a copy or
* modification of this software and in all copies of the supporting
* documentation for such software.
* This software may be subject to United States export controls.
* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR AT&T MAKE ANY
* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
* OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
It goes on to say that you get about 16 bits of pseudo-entropy out of
each 32 bit return value, and to run it through a post-whitening
function like DES or MD5 to ensure uniform diffusion of said entropy.
Cf the truerand.c file in
James H. Cloos, Jr. <http://www.jhcloos.com/cloos/pgp_public_key.txt>
<cloos at jhcloos.com> E9E9 F828 61A4 6EA9 0F2B 63E7 997A 9F17 ED7D AEA6
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