gnutls_fingerprint(3) gnutls gnutls_fingerprint(3)
NAME
gnutls_fingerprint - API function
SYNOPSIS
#include <gnutls/gnutls.h>
int gnutls_fingerprint(gnutls_digest_algorithm_t algo, const gnutls_da-
tum_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 certifi-
cate 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 3.8.9 gnutls_fingerprint(3)
Generated by dwww version 1.16 on Sat Oct 3 06:03:18 CEST 2026.