---
name: "gnutls_x509_crl_verify"
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_verify"
---

# gnutls\_x509\_crl\_verify(3)

API function

## NAME

gnutls\_x509\_crl\_verify - API function

## SYNOPSIS

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

**int gnutls\_x509\_crl\_verify(gnutls\_x509\_crl\_t** *crl***, const gnutls\_x509\_crt\_t \*** *trusted\_cas***, unsigned** *tcas\_size***, unsigned int** *flags***, unsigned int \*** *verify***);**

## ARGUMENTS

- gnutls\_x509\_crl\_t crl

  is the crl to be verified

- const gnutls\_x509\_crt\_t \* trusted\_cas

  is a certificate list that is considered to be trusted one

- unsigned tcas\_size

  holds the number of CA certificates in CA\_list

- unsigned int flags

  Flags that may be used to change the verification algorithm. Use OR of the gnutls\_certificate\_verify\_flags enumerations.

- unsigned int \* verify

  will hold the crl verification output.

## DESCRIPTION

This function will try to verify the given crl and return its verification status. See **gnutls\_x509\_crt\_list\_verify()** for a detailed description of return values. Note that since GnuTLS 3.1.4 this function includes the time checks.

Note that value in  *verify* is set only when the return value of this  function is success (i.e, failure to trust a CRL a certificate does not imply  a negative return value).

Before GnuTLS 3.5.7 this function would return zero or a positive number on success.

## RETURNS

On success, **GNUTLS\_E\_SUCCESS** (0), 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/