gnutls_x509_crt_check_issuer(3)    gnutls    gnutls_x509_crt_check_issuer(3)

NAME         top

       gnutls_x509_crt_check_issuer - API function

SYNOPSIS         top

       #include <gnutls/x509.h>

       unsigned gnutls_x509_crt_check_issuer(gnutls_x509_crt_t cert,
       gnutls_x509_crt_t issuer);

ARGUMENTS         top

       gnutls_x509_crt_t cert
                   is the certificate to be checked

       gnutls_x509_crt_t issuer
                   is the certificate of a possible issuer

DESCRIPTION         top

       This function will check if the given certificate was issued by the
       given issuer. It checks the DN fields and the authority key
       identifier and subject key identifier fields match.

       If the same certificate is provided at the  cert and  issuer fields,
       it will check whether the certificate is self-signed.

RETURNS         top

       It will return true (1) if the given certificate is issued by the
       given issuer, and false (0) if not.

REPORTING BUGS         top

       Report bugs to <>.
       Home page:

COPYRIGHT         top

       Copyright © 2001-2018 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 

COLOPHON         top

       This page is part of the GnuTLS (GnuTLS Transport Layer Security
       Library) project.  Information about the project can be found at 
       ⟨⟩.  If you have a bug report for this manual
       page, send it to  This page was obtained from the
       tarball gnutls-3.6.2.tar.xz fetched from
       ⟨⟩ on 2018-04-30.  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
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gnutls                              3.6.2    gnutls_x509_crt_check_issuer(3)