glenda.party
term% ls -F
term% cat index.txt
MAKEKEY(8)                  System Manager's Manual                 MAKEKEY(8)



NAME
       makekey - generate encryption key

SYNOPSIS
       /usr/lib/makekey

DESCRIPTION
       Makekey  improves  the  usefulness of encryption schemes depending on a
       key by increasing the amount of time required to search the key  space.
       It  reads  10 bytes from its standard input, and writes 13 bytes on its
       standard output.  The output depends on the input in a way intended  to
       be  difficult  to  compute (i.e. to require a substantial fraction of a
       second).

       The first eight input bytes (the input  key)  can  be  arbitrary  ASCII
       characters.   The  last  two (the salt) are best chosen from the set of
       digits, upper- and lower-case letters, and `.' and `/'.  The salt char‐
       acters are repeated as the first two characters of the output.  The re‐
       maining 11 output characters are chosen from the same set as  the  salt
       and constitute the output key.

       The  transformation performed is essentially the following: the salt is
       used to select one of 4096 cryptographic machines all based on the  Na‐
       tional  Bureau of Standards DES algorithm, but modified in 4096 differ‐
       ent ways.  Using the input key as key, a constant string  is  fed  into
       the  machine and recirculated a number of times.  The 64 bits that come
       out are distributed into the 66 useful key bits in the result.

       Makekey is intended for programs that perform encryption (e.g.  ed  and
       crypt(1)).  Usually its input and output will be pipes.

SEE ALSO
       crypt(1), ed(1)



                                                                    MAKEKEY(8)