NAME

       shishi_checksum - API function

SYNOPSIS

       #include <shishi.h>

       int  shishi_checksum(Shishi * handle, Shishi_key * key, int keyusage, int cksumtype, const
       char * in, size_t inlen, char ** out, size_t * outlen);

ARGUMENTS

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

       Shishi_key * key
                   key to compute checksum with.

       int keyusage
                   integer specifying what this key is used for.

       int cksumtype
                   the checksum algorithm to use.

       const char * in
                   input array with data to integrity protect.

       size_t inlen
                   size of input array with data to integrity protect.

       char ** out output array with newly allocated integrity protected data.

       size_t * outlen
                   output variable with length of output array with checksum.

DESCRIPTION

       Integrity protect data using key, possibly altered by supplied key usage.  If key usage is
       0, no key derivation is used.  The OUT buffer must be deallocated by the caller.

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.