NAME

       gnutls_fingerprint - API function

SYNOPSIS

       #include <gnutls/gnutls.h>

       int gnutls_fingerprint(gnutls_digest_algorithm_t algo, const gnutls_datum_t * data, void * result, size_t
       * result_size);

ARGUMENTS

       gnutls_digest_algorithm_t algo
                   is a digest algorithm

       const gnutls_datum_t * data
                   is the data

       void * result
                   is the place where the result will be copied (may be null).

       size_t * result_size
                   should  hold  the  size  of  the  result. The actual size of the returned result will also be
                   copied there.

DESCRIPTION

       This function will calculate a fingerprint (actually a hash), of the  given  data.   The  result  is  not
       printable data.  You should convert it to hex, or to something else printable.

       This  is the usual way to calculate a fingerprint of an X.509 DER encoded certificate.  Note however that
       the fingerprint of an OpenPGP certificate is not just a hash and cannot be calculated with this function.

RETURNS

       On success, GNUTLS_E_SUCCESS (0) is returned, otherwise an error code is returned.

REPORTING BUGS

       Report bugs to <bugs@gnutls.org>.
       Home page: https://www.gnutls.org

COPYRIGHT

       Copyright © 2001-2023 Free Software Foundation, Inc., and others.
       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  gnutls  is  maintained as a Texinfo manual.  If the /usr/share/doc/gnutls/
       directory does not contain the HTML form visit

       https://www.gnutls.org/manual/

gnutls                                                3.8.3                                gnutls_fingerprint(3)