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OpenSolaris 2009.06 - man page for makekey (opensolaris section 1)

makekey(1)				  User Commands 			       makekey(1)

NAME
       makekey - generate encryption key

SYNOPSIS
       /usr/lib/makekey

DESCRIPTION
       makekey	improves  the usefulness of encryption schemes that depend on a key by increasing
       the amount of time required to search the key space. It attempts to read 8 bytes  for  its
       key (the first eight input bytes), then it attempts to read 2 bytes for its salt (the last
       two input bytes). The output depends on the input in a way intended  to	be  difficult  to
       compute (that is, 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  let-
       ters.  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  constitute
       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  algo-
       rithm,  but  broken in 4,096 different 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.

       makekey	is  intended  for programs that perform encryption. Usually, its input and output
       will be pipes.

SEE ALSO
       ed(1), vi(1), passwd(4)

NOTES
       makekey can produce different results depending upon whether the input  is  typed  at  the
       terminal or redirected from a file.

SunOS 5.11				    3 Mar 2008				       makekey(1)


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