---
name: "gnutls_x509_crl_iter_crt_serial"
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_crl_iter_crt_serial"
---

# gnutls\_x509\_crl\_iter\_crt\_serial(3)

API function

## NAME

gnutls\_x509\_crl\_iter\_crt\_serial - API function

## SYNOPSIS

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

**int gnutls\_x509\_crl\_iter\_crt\_serial(gnutls\_x509\_crl\_t** *crl***, gnutls\_x509\_crl\_iter\_t \*** *iter***, unsigned char \*** *serial***, size\_t \*** *serial\_size***, time\_t \*** *t***);**

## ARGUMENTS

- gnutls\_x509\_crl\_t crl

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

- gnutls\_x509\_crl\_iter\_t \* iter

  A pointer to an iterator (initially the iterator should be **NULL**)

- unsigned char \* serial

  where the serial number will be copied

- size\_t \* serial\_size

  initially holds the size of serial

- time\_t \* t

  if non null, will hold the time this certificate was revoked

## DESCRIPTION

This function performs the same as **gnutls\_x509\_crl\_get\_crt\_serial()**, but reads sequentially and keeps state in the iterator  between calls. That allows it to provide better performance in sequences  with many elements (50000+).

When past the last element is accessed **GNUTLS\_E\_REQUESTED\_DATA\_NOT\_AVAILABLE** is returned and the iterator is reset.

After use, the iterator must be deinitialized using **gnutls\_x509\_crl\_iter\_deinit()**.

## 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/