Функции API  (API function)
  
Имя (Name)
gnutls_x509_crt_export - API function
Синопсис (Synopsis)
#include <gnutls/x509.h>
       int gnutls_x509_crt_export(gnutls_x509_crt_t cert,
       gnutls_x509_crt_fmt_t format, void * output_data, size_t *
       output_data_size);
Аргументы (Arguments)
gnutls_x509_crt_t cert
                   Holds the certificate
       gnutls_x509_crt_fmt_t format
                   the format of output params. One of PEM or DER.
       void * output_data
                   will contain a certificate PEM or DER encoded
       size_t * output_data_size
                   holds the size of output_data (and will be replaced
                   by the actual size of parameters)
Описание (Description)
This function will export the certificate to DER or PEM format.
       If the buffer provided is not long enough to hold the output,
       then *output_data_size is updated and
       GNUTLS_E_SHORT_MEMORY_BUFFER will be returned.
       If the structure is PEM encoded, it will have a header of "BEGIN
       CERTIFICATE".
Возвращаемое значение (Return value)
In case of failure a negative error code will be returned, and 0
       on success.
Сообщение об ошибках (Reporting bugs)
Report bugs to <bugs@gnutls.org>.
       Home page: https://www.gnutls.org
Смотри также (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/