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Re: Bug#448775: Uses too much entropy (Debian Bug #343085)
From: |
Nikos Mavrogiannopoulos |
Subject: |
Re: Bug#448775: Uses too much entropy (Debian Bug #343085) |
Date: |
Fri, 4 Jan 2008 11:59:58 +0200 |
On Jan 4, 2008 11:48 AM, Andreas Metzler <address@hidden> wrote:
> >> have to disagree with this being a kernel bug. man 4 random on
> >> Linux documents how /dev/urandom behaves, and is supposed to
> >> behave. "Some bytes" looks more like "a few hundred bytes", and
> >> Exim does not exhaust /dev/urandom as badly when OpenSSL is used.
>
> Hello,
> The amount of data read from /dev/urandom in Gnutls/Gcrypt is on a
> different scale than in openssl:
>
[...]
> So with a forking daemon (therefore initialising the RNG for every in-
> and outgoing connection) GnuTLS will deplete entropy_avail to its
> bare minimum vor every single connection, while openssl only takes
> about 7%.
> What is the actual cause of this difference in resource usage?
This is mostly a question for libgcrypt developers, but I believe
libgcrypt initializes the PRNG in a more conservative way.
regards,
Nikos
- Uses too much entropy (Debian Bug #343085), Marc Haber, 2008/01/02
- Re: Uses too much entropy (Debian Bug #343085), Nikos Mavrogiannopoulos, 2008/01/04
- Re: Bug#448775: Uses too much entropy (Debian Bug #343085), Andreas Metzler, 2008/01/04
- Re: Bug#448775: Uses too much entropy (Debian Bug #343085),
Nikos Mavrogiannopoulos <=
- Re: Bug#448775: Uses too much entropy (Debian Bug #343085), Werner Koch, 2008/01/04
- Re: Bug#448775: Uses too much entropy (Debian Bug #343085), Simon Josefsson, 2008/01/04
- Re: Bug#448775: Uses too much entropy (Debian Bug #343085), Florian Weimer, 2008/01/04
- Re: Bug#448775: Uses too much entropy (Debian Bug #343085), Simon Josefsson, 2008/01/04
- Re: Bug#448775: Uses too much entropy (Debian Bug #343085), Werner Koch, 2008/01/04
- Re: Bug#448775: Uses too much entropy (Debian Bug #343085), Simon Josefsson, 2008/01/04
- Re: Bug#448775: Uses too much entropy (Debian Bug #343085), Florian Weimer, 2008/01/04
- Re: Bug#448775: Uses too much entropy (Debian Bug #343085), Werner Koch, 2008/01/04
- Re: Bug#448775: Uses too much entropy (Debian Bug #343085), Simon Josefsson, 2008/01/04
- Re: Bug#448775: Uses too much entropy (Debian Bug #343085), Werner Koch, 2008/01/08