[FW1] encrypting user passwords

[Joe Neuman <intellis@i2k.com>]

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We're still working on importing users into the FW-1 internal database.
The passwords need to be encrypted before they can be imported. I'm using
a perl script to pass the clear text password to the crypt function and
return the encrypted password. If I get the crypt function's two
character salt value right I get the correct encrypted password.
 
I can enter some user ids and passwords into the database then use fw
dbexport to get the encrypted passwords. The salt value used to encrypt
the clear text password is the first two characters of the encrypted
password. If I turn around and use these two characters as the salt value
in my perl script I get the identical encrypted password. But these two
characters aren't consistent.
 
So my question is does anyone know how FW-1 determines which two
characters to use for the salt value?
 
Any help would be appreciated
 
Thanks,
 
Joe Neuman