---
name: "gnutls_x509_trust_list_remove_cas"
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_trust_list_remove_cas"
---

# gnutls\_x509\_trust\_list\_remove\_cas(3)

API function

## NAME

gnutls\_x509\_trust\_list\_remove\_cas - API function

## SYNOPSIS

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

**int gnutls\_x509\_trust\_list\_remove\_cas(gnutls\_x509\_trust\_list\_t** *list***, const gnutls\_x509\_crt\_t \*** *clist***, unsigned** *clist\_size***);**

## ARGUMENTS

- gnutls\_x509\_trust\_list\_t list

  The list

- const gnutls\_x509\_crt\_t \* clist

  A list of CAs

- unsigned clist\_size

  The length of the CA list

## DESCRIPTION

This function will remove the given certificate authorities from the trusted list.

Note that this function can accept certificates and authorities not yet known. In that case they will be kept in a separate block list that will be used during certificate verification. Unlike **gnutls\_x509\_trust\_list\_add\_cas()** there is no deinitialization restriction for  certificate list provided in this function.

## RETURNS

The number of removed elements is returned.

## SINCE

3\.1.10

## 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/