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NAME

       shishi_dk - API function

SYNOPSIS

       #include <shishi.h>

       int   shishi_dk(Shishi  *  handle,  Shishi_key  *  key,  const  char  *
       prfconstant, size_t prfconstantlen, Shishi_key * derivedkey);

ARGUMENTS

       Shishi * handle
                   shishi handle as allocated by shishi_init().

       Shishi_key * key
                   input cryptographic key to use.

       const char * prfconstant
                   input array with the constant string.

       size_t prfconstantlen
                   size of input array with the constant string.

       Shishi_key * derivedkey
                   pointer to derived key (allocated by caller).

DERIVE A KEY FROM A KEY AND A CONSTANT THUSLY

       DK(KEY,     PRFCONSTANT)     =      SHISHI_RANDOM-TO-KEY(SHISHI_DR(KEY,
       PRFCONSTANT)).

RETURN VALUE

       Returns SHISHI_OK iff successful.

REPORTING BUGS

       Report bugs to <bug-shishi@gnu.org>.

COPYRIGHT

       Copyright © 2002-2010 Simon Josefsson.
       Copying  and  distribution  of this file, with or without modification,
       are permitted in any medium  without  royalty  provided  the  copyright
       notice and this notice are preserved.

SEE ALSO

       The  full  documentation  for shishi is maintained as a Texinfo manual.
       If the info and shishi programs are properly installed  at  your  site,
       the command

              info shishi

       should give you access to the complete manual.