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Cybersecurity

Password Authentication

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# 1  
Old 08-03-2001
Password Authentication
I would like to know how to validate an unix password from shell script (If is possible)

Thanks very much
Smilie
# 2  
Old 08-03-2001
as in trying to crack a password type of validate? Passwords are a one way salt. so your more or less just running random words and compairing it the shadow file's password field. once you have a match you have the password.

look into the command crypt.

/usr/bin/crypt
/usr/include/crypt.h
# 3  
Old 08-07-2001

This may seem like a dumb add-on question, but does anyone know where I can get the "crypt" command source? Or perhaps where I could even start looking for it? I have a little bit of downtime in my night-shift, so I'm not afraid to look for it - I've just been unsuccessful so far.

Also, is there a command out there that produces the MD5 passwords used in more current Unices?
# 4  
Old 08-07-2001
The ssleay and similar cryptographic distros have versions of crypt and mcrypt.
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