---
name: "gnutls_pkcs11_set_pin_function"
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_set_pin_function"
---

# gnutls\_pkcs11\_set\_pin\_function(3)

API function

## NAME

gnutls\_pkcs11\_set\_pin\_function - API function

## SYNOPSIS

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

**void gnutls\_pkcs11\_set\_pin\_function(gnutls\_pin\_callback\_t** *fn***, void \*** *userdata***);**

## ARGUMENTS

- gnutls\_pin\_callback\_t fn

  The PIN callback, a **gnutls\_pin\_callback\_t()** function.

- void \* userdata

  data to be supplied to callback

## DESCRIPTION

This function will set a callback function to be used when a PIN is required for PKCS 11 operations.  See **gnutls\_pin\_callback\_t()** on how the callback should behave.

## SINCE

2\.12.0

## 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/