gnutls_x509_crt_print man page

gnutls_x509_crt_print — API function


#include <gnutls/x509.h>

int gnutls_x509_crt_print(gnutls_x509_crt_t cert, gnutls_certificate_print_formats_t format, gnutls_datum_t * out);


gnutls_x509_crt_t cert
The data to be printed
gnutls_certificate_print_formats_t format
Indicate the format to use
gnutls_datum_t * out
Newly allocated datum with null terminated string.


This function will pretty print a X.509 certificate, suitable for display to a human.

If the format is GNUTLS_CRT_PRINT_FULL then all fields of the certificate will be output, on multiple lines. The GNUTLS_CRT_PRINT_ONELINE format will generate one line with some selected fields, which is useful for logging purposes.

The output out needs to be deallocated using gnutls_free().


On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative error value.

Reporting Bugs

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

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



gnutls 3.5.4