crypt

[afrb2@chiark.chu.cam.ac.uk (Alan Bain)]

The crypt() function is effectively a DES encryption which is perturbed by 
the salt.  It is perfectly possible to use it (the one in GNU libc)
to perform DES encryption -- I have don it.  It is not reversible\
when it is used as a one way hash.  Vi on genuine un*x systems uses
crypt() to encrypt your files (:X - of course you mustn't confuse 
with :x).  I can dig out the C code which uses crypt for encoding
and decoding if it is of any use.  

Alan Bain
afrb2@cam.ac.uk