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'd 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().

       This function will take into account the OCSP Certificate Status TLS extension, as well as
       the  following  X.509  certificate  extensions:  Name  Constraints,  Key  Usage, and Basic
       Constraints (pathlen).

       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  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_verify_peers3().

RETURNS

       GNUTLS_E_SUCCESS (0) when the validation is performed, or a negative error code otherwise.
       A sucessful 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: http://www.gnutls.org

COPYRIGHT

       Copyright © 2001-2022 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

       http://www.gnutls.org/manual/