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Message-ID: <20261112015223.GA242717@joooj.vinc17.net>
Date: Thu, 12 Nov 2026 02:52:23 +0100
From: Vincent Lefevre <vincent@...c17.net>
To: Alejandro Colomar <alx+linux-man@...nel.org>
Cc: Alejandro Colomar <alx@...nel.org>, linux-man@...r.kernel.org,
libc-alpha@...rceware.org, Walter Harms <wharms@....de>,
Rich Felker <dalias@...c.org>, ~hallyn/shadow@...ts.sr.ht,
musl@...ts.openwall.com
Subject: Re: [PATCH v1] man/man3/crypt.3: These functions accept many
algorithms, not only DES
Hi,
On 2026-11-10 01:01:19 +0100, Alejandro Colomar wrote:
> $ MANWIDTH=64 diffman-git -U99 HEAD
> --- HEAD^:man/man3/crypt.3
> +++ HEAD:man/man3/crypt.3
[...]
> STANDARDS
> crypt()
> POSIX.1‐2008.
[...]
> NOTES
> - Features in glibc
> - The glibc version of this function supports additional
> - hashing algorithms.
> -
> + salt
> If salt is a character string starting with the characters
> "$id$" followed by a string optionally terminated by "$",
> then the result has the form:
>
> $id$salt$hashed
[...]
The "$" character is disallowed by POSIX (in 2008 and still in the
current edition) in the salt argument:
https://pubs.opengroup.org/onlinepubs/9699919799.2008edition/functions/crypt.html
https://pubs.opengroup.org/onlinepubs/9799919799/functions/crypt.html
(this breaks a "shall").
I think that something should be said about that.
--
Vincent Lefèvre <vincent@...c17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / Pascaline project (LIP, ENS-Lyon)
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