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       gnutls_x509_crt_get_issuer_dn - This function returns the Certificate’s
       issuer distinguished name


       #include <gnutls/x509.h>

       int gnutls_x509_crt_get_issuer_dn(gnutls_x509_crt_t cert, char  *  buf,
       size_t * sizeof_buf);


       gnutls_x509_crt_t cert
                   should contain a gnutls_x509_crt_t structure

       char * buf  a pointer to a structure to hold the name (may be null)

       size_t * sizeof_buf
                   initially holds the size of buf


       This  function  will  copy  the  name  of the Certificate issuer in the
       provided buffer. The name will be in the  form  "C=xxxx,O=yyyy,CN=zzzz"
       as  described  in  RFC2253.  The  output  string will be ASCII or UTF-8
       encoded, depending on the certificate data.

       If buf is null then only the size will be filled.


       GNUTLS_E_SHORT_MEMORY_BUFFER if the provided buffer is not long enough,
       and  in  that  case  the  *sizeof_buf will be updated with the required
       size.  On success 0 is returned.


       Report   bugs   to    <>.     GnuTLS    home    page:  General  help  using GNU software:


       Copyright © 2008 Free Software Foundation.
       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.


       The full documentation for gnutls is maintained as  a  Texinfo  manual.
       If  the  info  and gnutls programs are properly installed at your site,
       the command

              info gnutls

       should give you access to the complete manual.