svn commit: r274103 - head/sys/dev/random

[Ian Lepore]

On Tue, 2014-11-04 at 23:02 +0000, Dag-Erling Smørgrav wrote:
> Author: des
> Date: Tue Nov  4 23:02:19 2014
> New Revision: 274103
> URL: https://svnweb.freebsd.org/changeset/base/274103
> 
> Log:
>   When reseeding the DPRNG, we're supposed to hash the current key and
>   some accumulated entropy twice and use that as the new key.  Due to a
>   typo, we were using the output of the first hash round instead of the
>   second.  Correct this, but eliminate temp[] since we can reuse hash[].
>   Also add comments explaining what is going on and why.
>   
>   Noticed by:	Sami Farin <sami.farin at gmail.com>
>   Reviewed by:	markm@
>   Approved by:	so (des)
> 
> Modified:
>   head/sys/dev/random/fortuna.c
> 
> Modified: head/sys/dev/random/fortuna.c
> ==============================================================================
> --- head/sys/dev/random/fortuna.c	Tue Nov  4 23:02:16 2014	(r274102)
> +++ head/sys/dev/random/fortuna.c	Tue Nov  4 23:02:19 2014	(r274103)
> @@ -25,6 +25,17 @@
>   *
>   */
>  
> +/* This implementation of Fortuna is based on the descriptions found in
> + * ISBN 0-471-22357-3 "Practical Cryptography" by Ferguson and Schneier
> + * ("K&S").

I'm guessing s/b F&S.

-- Ian