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

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From: Ulrich Drepper <drepper@...>
To: Kees Cook <kees.cook@...>
Cc: Arjan van de Ven <arjan@...>, <linux-kernel@...>, <libc-alpha@...>
Subject: Re: [PATCH] ELF: implement AT_RANDOM for glibc PRNG seeding
Date: Friday, October 3, 2008 - 10:56 am

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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.

- --
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
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Messages in current thread:
[PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Thu Oct 2, 8:16 pm)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Andi Kleen, (Mon Oct 6, 2:00 am)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Mon Oct 6, 1:50 pm)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Andi Kleen, (Mon Oct 6, 3:26 pm)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Mon Oct 6, 6:07 pm)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Roland McGrath, (Mon Oct 6, 7:58 pm)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Mon Oct 6, 8:31 pm)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Ulrich Drepper, (Mon Oct 6, 8:57 pm)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Mon Oct 6, 9:44 pm)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Ulrich Drepper, (Mon Oct 6, 9:51 pm)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Ulrich Drepper, (Mon Oct 6, 8:08 pm)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Andi Kleen, (Mon Oct 6, 7:28 pm)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Mon Oct 6, 6:01 pm)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Andi Kleen, (Mon Oct 6, 7:19 pm)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Mon Oct 6, 7:29 pm)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Andi Kleen, (Mon Oct 6, 7:44 pm)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Roland McGrath, (Thu Oct 2, 8:52 pm)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Fri Oct 3, 1:15 am)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Roland McGrath, (Fri Oct 3, 4:22 pm)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Jakub Jelinek, (Thu Oct 2, 8:43 pm)
[PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Fri Oct 3, 1:29 am)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Arjan van de Ven, (Fri Oct 3, 1:57 am)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Ulrich Drepper, (Fri Oct 3, 2:25 am)
[PATCH] ELF: implement AT_RANDOM for glibc PRNG seeding, Kees Cook, (Fri Oct 3, 10:50 am)
Re: [PATCH] ELF: implement AT_RANDOM for glibc PRNG seeding, Jakub Jelinek, (Fri Oct 3, 10:57 am)
[PATCH] ELF: implement AT_RANDOM for glibc PRNG seeding, Kees Cook, (Fri Oct 3, 1:33 pm)
Re: [PATCH] ELF: implement AT_RANDOM for glibc PRNG seeding, Ulrich Drepper, (Fri Oct 3, 1:41 pm)
[PATCH v5] ELF: implement AT_RANDOM for glibc PRNG seeding, Kees Cook, (Fri Oct 3, 1:59 pm)
Re: [PATCH v5] ELF: implement AT_RANDOM for glibc PRNG seeding, Andrew Morton, (Tue Oct 21, 4:01 pm)
Re: [PATCH v5] ELF: implement AT_RANDOM for glibc PRNG seeding, Ulrich Drepper, (Tue Oct 21, 4:22 pm)
Re: [PATCH v5] ELF: implement AT_RANDOM for glibc PRNG seeding, Andrew Morton, (Mon Oct 27, 1:46 am)
Re: [PATCH v5] ELF: implement AT_RANDOM for glibc PRNG seeding, Ulrich Drepper, (Sat Oct 18, 1:42 am)
Re: [PATCH] ELF: implement AT_RANDOM for glibc PRNG seeding, Ulrich Drepper, (Fri Oct 3, 10:56 am)
Re: [PATCH] ELF: implement AT_RANDOM for future glibc use, Kees Cook, (Fri Oct 3, 1:25 am)