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>.      GNU      Shishi      home      page:
       http://www.gnu.org/software/shishi/      General      help     using     GNU     software:
       http://www.gnu.org/gethelp/

COPYRIGHT

       Copyright © 2002-2022 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.