---
name: "gnutls_pkcs11_token_check_mechanism"
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_pkcs11_token_check_mechanism"
---

# gnutls\_pkcs11\_token\_check\_mechanism(3)

API function

## NAME

gnutls\_pkcs11\_token\_check\_mechanism - API function

## SYNOPSIS

**#include \<gnutls/pkcs11.h\>**

**unsigned gnutls\_pkcs11\_token\_check\_mechanism(const char \*** *url***, unsigned long** *mechanism***, void \*** *ptr***, unsigned** *psize***, unsigned** *flags***);**

## ARGUMENTS

- const char \* url

  should contain a PKCS 11 URL

- unsigned long mechanism

  The PKCS **11** mechanism ID

- void \* ptr

  if set it should point to a CK\_MECHANISM\_INFO struct

- unsigned psize

  the size of CK\_MECHANISM\_INFO struct (for safety)

- unsigned flags

  must be zero

## DESCRIPTION

This function will return whether a mechanism is supported by the given token. If the mechanism is supported and\
  *ptr* is set, it will be updated with the token information.

## RETURNS

Non-zero if the mechanism is supported or zero otherwise.

## SINCE

3\.6.0

## 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/