Re: Re: Encrypting pg_shadow passwords

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От Bruce Momjian
Тема Re: Re: Encrypting pg_shadow passwords
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Msg-id 200106261531.f5QFVaS09953@candle.pha.pa.us
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Ответ на Re: Re: Encrypting pg_shadow passwords  (Tom Lane <tgl@sss.pgh.pa.us>)
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> In the long run, though, we want to drop crypt(3) usage entirely.
> It's just too much of a pain in the neck to depend on the C library's
> crypt(), for two reasons:
> 
> 1. It's not in libc on all systems, leading to constant problems when
> linking clients, particularly with shared libraries that have to have
> a dependency on another shared library because of this.  (Search the
> archives for problems about "can't find crypt".  There are many such
> reports.)
> 
> 2. crypt() isn't guaranteed compatible across platforms, meaning that
> your clients may be unable to log in anyway.  See for example
> http://fts.postgresql.org/db/mw/msg.html?mid=57516
> 
> Using our own MD5 (or whatever) code will avoid these problems.

Agreed.  If people say they want to keep crypt for /etc/passwd, we can. 
If they don't say they want it, we can go with only MD5.

--  Bruce Momjian                        |  http://candle.pha.pa.us pgman@candle.pha.pa.us               |  (610)
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