gnutls_certificate_verify_peers3(3) — Linux manual page

NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURNS | SINCE | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON

gnutls_certificate_verify_peers3(3)utlsutls_certificate_verify_peers3(3)

NAME         top

       gnutls_certificate_verify_peers3 - API function

SYNOPSIS         top

       #include <gnutls/gnutls.h>

       int gnutls_certificate_verify_peers3(gnutls_session_t session,
       const char * hostname, unsigned int * status);

ARGUMENTS         top

       gnutls_session_t session
                   is a gnutls session

       const char * hostname
                   is the expected name of the peer; may be NULL

       unsigned int * status
                   is the output of the verification

DESCRIPTION         top

       This function will verify the peer's certificate and store the
       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  status 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(). See the documentation of
       gnutls_certificate_verify_peers2() for details in the
       verification process.

       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).

       If the  hostname provided is non-NULL then this function will
       compare the hostname in the certificate against it. The
       comparison will follow the RFC6125 recommendations. If names do
       not match the GNUTLS_CERT_UNEXPECTED_OWNER status flag will be
       set.

       In order to verify the purpose of the end-certificate (by
       checking the extended key usage), use
       gnutls_certificate_verify_peers().

       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         top

       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.

SINCE         top

       3.1.4

REPORTING BUGS         top

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

COPYRIGHT         top

       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 notice and this notice are preserved.

SEE ALSO         top

       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/ 

COLOPHON         top

       This page is part of the GnuTLS (GnuTLS Transport Layer Security
       Library) project.  Information about the project can be found at
       ⟨http://www.gnutls.org/⟩.  If you have a bug report for this
       manual page, send it to bugs@gnutls.org.  This page was obtained
       from the tarball gnutls-3.7.1.tar.xz fetched from
       ⟨http://www.gnutls.org/download.html⟩ on 2021-04-01.  If you
       discover any rendering problems in this HTML version of the page,
       or you believe there is a better or more up-to-date source for
       the page, or you have corrections or improvements to the
       information in this COLOPHON (which is not part of the original
       manual page), send a mail to man-pages@man7.org

gnutls                            3.7.g1nutls_certificate_verify_peers3(3)