---
name: "gnutls_x509_crt_get_expiration_time"
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_get_expiration_time"
---

# gnutls\_x509\_crt\_get\_expiration\_time(3)

API function

## NAME

gnutls\_x509\_crt\_get\_expiration\_time - API function

## SYNOPSIS

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

**time\_t gnutls\_x509\_crt\_get\_expiration\_time(gnutls\_x509\_crt\_t** *cert***);**

## ARGUMENTS

- gnutls\_x509\_crt\_t cert

  should contain a **gnutls\_x509\_crt\_t** type

## DESCRIPTION

This function will return the time this certificate was or will be expired.

## RETURNS

expiration time, or (time\_t)-1 on error.

## 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/