gnutls_certificate_verify_peers2(3) gnutls gnutls_certificate_verify_peers2(3)
NAME
gnutls_certificate_verify_peers2 - API function
SYNOPSIS
#include <gnutls/gnutls.h>
int gnutls_certificate_verify_peers2(gnutls_session_t session, unsigned
int * status);
ARGUMENTS
gnutls_session_t session
is a gnutls session
unsigned int * status
is the output of the verification
DESCRIPTION
This function will verify the peer's certificate and store the status
in the status variable as a bitwise OR of gnutls_certificate_status_t
values or zero if the certificate is trusted. Note that value in sta-
tus is set only when the return value of this function is success (i.e,
failure to trust a certificate does not imply a negative return value).
The default verification flags used by this function can be overridden
using gnutls_certificate_set_verify_flags().
This function will take into account the stapled OCSP responses sent by
the server, as well as the following X.509 certificate extensions: Name
Constraints, Key Usage, and Basic Constraints (pathlen).
Note that you must also check the peer's name in order to check if the
verified certificate belongs to the actual peer, see
gnutls_x509_crt_check_hostname(), or use gnutls_certificate_ver-
ify_peers3().
To avoid denial of service attacks some default upper limits regarding
the certificate key size and chain size are set. To override them use
gnutls_certificate_set_verify_limits().
Note that when using raw public-keys verification will not work because
there is no corresponding certificate body belonging to the raw key
that can be verified. In that case this function will return
GNUTLS_E_INVALID_REQUEST.
RETURNS
GNUTLS_E_SUCCESS (0) when the validation is performed, or a negative
error code otherwise. A successful error code means that the status
parameter must be checked to obtain the validation status.
REPORTING BUGS
Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org
COPYRIGHT
Copyright © 2001- 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 no-
tice 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 3.7.3 gnutls_certificate_verify_peers2(3)
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