shishi_dk(3)							      shishi							      shishi_dk(3)

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 (C) 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.

shishi								       1.0.1							      shishi_dk(3)