CRYPT(III) 4/30/73 CRYPT(III)





CRYPT(III)                   4/30/73                   CRYPT(III)







NAME

     crypt - password encoding



SYNOPSIS

     mov     $key,r0

     jsr     pc,crypt



     char *crypt(key)

     char *key;



DESCRIPTION

     On entry, r0 points to a string of characters terminated  by

     an  ASCII NUL.  The routine performs an operation on the key

     which is difficult to invert (i.e. encrypts it)  and  leaves

     the resulting eight bytes of ASCII alphanumerics in a global

     cell called ``word''.



     From C, the key argument is a string and the value  returned

     is a pointer to the eight-character result.



     This routine is used to encrypt all passwords.



SEE ALSO

     passwd(I), passwd(V), login(I)



BUGS

     Short or otherwise simple passwords can be decrypted  easily

     by  exhaustive  search.   Six  characters  of  gibberish  is

     reasonably safe.
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