---
name: "gnutls_x509_crt_print"
section: "3"
platform: "linux"
package: "gnutls"
version: "3.8.13-3"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/gnutls_x509_crt_print"
---

# gnutls\_x509\_crt\_print(3)

API function

## NAME

gnutls\_x509\_crt\_print - API function

## SYNOPSIS

**#include \<gnutls/x509.h\>**

**int gnutls\_x509\_crt\_print(gnutls\_x509\_crt\_t** *cert***, gnutls\_certificate\_print\_formats\_t** *format***, gnutls\_datum\_t \*** *out***);**

## ARGUMENTS

- 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.

## DESCRIPTION

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()**.

## RETURNS

On success, **GNUTLS\_E\_SUCCESS** (0) is returned, otherwise a negative error value.

## REPORTING BUGS

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

## COPYRIGHT

Copyright © 2001-2023 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

- https://www.gnutls.org/manual/