Date: Sat, 25 Jan 2003 19:27:05 +0000 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: FreeBSD-questions@FreeBSD.ORG Subject: Re: Misc Questions. Message-ID: <20030125192705.GC44054@happy-idiot-talk.infracaninophi> In-Reply-To: <3E32DDB6.7040308@potentialtech.com> References: <F66WZhKmcEntH4NnXoN0000e3f8@hotmail.com> <3E32DDB6.7040308@potentialtech.com>
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On Sat, Jan 25, 2003 at 01:55:50PM -0500, Bill Moran wrote:
> >2. What command can i use if I want to crypt a word and I see it
> >encrypoted just like the /etc/master.passwd file? For example, I want to
> >know how the password "foobar" would be encrypted in /etc/master.passwd
> >if It would be my real passwd.
>
> I don't know the answer to this one, check the source.
crypt(3) is the C language interface. Or perl will let you get at it
from the command line. The format of the salt determines the
encryption algorithm used:
Eg. DES just uses two characters:
% perl -e 'print crypt("password", "xx"), "\n";'
xxj31ZMTZzkVA
whereas MD5 uses the 'Modular' format and an 8 character salt:
% perl -e 'print crypt(q{password}, q{$1$xxxxxxxx$}), "\n";'
$1$xxxxxxxx$UYCIxa628.9qXjpQCjM4a.
Only MD5 and DES are available in FreeBSD 4.x --- other systems may
support Blowfish using salts that start $2$
Cheers,
Matthew
--
Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks
Savill Way
PGP: http://www.infracaninophile.co.uk/pgpkey Marlow
Tel: +44 1628 476614 Bucks., SL7 1TH UK
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