makekey man page on HP-UX

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makekey(1)							    makekey(1)

       makekey - generate encryption key

       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 stan‐
       dard 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 sec‐

       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, and uppercase and lowercase letters.  The salt  characters  are
       repeated	 as  the first two characters of the output.  The remaining 11
       output characters are chosen from the same set as the salt and  consti‐
       tute the output key.

       The  transformation performed is essentially the following: the salt is
       used to select one of 4,096 cryptographic machines  all	based  on  the
       National Bureau of Standards DES algorithm, but broken in 4,096 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 output key bits in the result.

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

       crypt(1), ed(1), passwd(4).


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