DragonFly On-Line Manual Pages

shishi_n_fold(3)                    shishi                    shishi_n_fold(3)

NAME
       shishi_n_fold - API function

SYNOPSIS
       #include <shishi.h>

       int shishi_n_fold(Shishi * handle, const char * in, size_t inlen, char
       * out, size_t outlen);

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

       const char * in
                   input array with data to decrypt.

       size_t inlen
                   size of input array with data to decrypt ("M").

       char * out  output array with decrypted data.

       size_t outlen
                   size of output array ("N").

DESCRIPTION
       Fold data into a fixed length output array, with the intent to give
       each input bit approximately equal weight in determining the value of
       each output bit.

       The algorithm is from "A Better Key Schedule For DES-like Ciphers" by
       Uri Blumenthal and Steven M. Bellovin,
       http://www.research.att.com/~smb/papers/ides.pdf, although the sample
       vectors provided by the paper are incorrect.

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                               1.0.2                    shishi_n_fold(3)