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Re: [PATCH] ELF: implement AT_RANDOM for glibc PRNG seeding

From: Ulrich Drepper <drepper at redhat dot com>
To: Kees Cook <kees dot cook at canonical dot com>
Cc: Arjan van de Ven <arjan at infradead dot org>, linux-kernel at vger dot kernel dot org, libc-alpha at sourceware dot org
Date: Fri, 03 Oct 2008 07:56:57 -0700
Subject: Re: [PATCH] ELF: implement AT_RANDOM for glibc PRNG seeding
References: <20081001201116.GD12527@outflux.net> <48E3EFD6.2010704@redhat.com> <20081001215657.GH12527@outflux.net> <20081001220948.GC32107@sunsite.ms.mff.cuni.cz> <20081001222706.68E7E1544B4@magilla.localdomain> <20081003001616.GN10632@outflux.net> <20081003004340.GF32682@tyan-ft48-01.lab.bos.redhat.com> <20081003052938.GS10632@outflux.net> <20081002225718.6a0d803a@infradead.org> <48E5BAC6.9070007@redhat.com> <20081003145054.GU10632@outflux.net>

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There is no need for a AT_RANDOM_SIZE entry.  It's unlikely that ever a
different value is used.  The kernel's entropy pool cannot be strssed
that much.  If more data is needed userlevel will use the bits to seed a
PRNG.

- --
â Ulrich Drepper â Red Hat, Inc. â 444 Castro St â Mountain View, CA â
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References:
- randomized stack protector value
  - From: Kees Cook
- Re: randomized stack protector value
  - From: Ulrich Drepper
- Re: randomized stack protector value
  - From: Kees Cook
- Re: randomized stack protector value
  - From: Jakub Jelinek
- Re: randomized stack protector value
  - From: Roland McGrath
- [PATCH] ELF: implement AT_RANDOM for future glibc use
  - From: Kees Cook
- Re: [PATCH] ELF: implement AT_RANDOM for future glibc use
  - From: Jakub Jelinek
- [PATCH] ELF: implement AT_RANDOM for future glibc use
  - From: Kees Cook
- Re: [PATCH] ELF: implement AT_RANDOM for future glibc use
  - From: Arjan van de Ven
- Re: [PATCH] ELF: implement AT_RANDOM for future glibc use
  - From: Ulrich Drepper
- [PATCH] ELF: implement AT_RANDOM for glibc PRNG seeding
  - From: Kees Cook

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