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

# [NAME](#NAME)

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

# [SYNOPSIS](#SYNOPSIS)

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

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

# [ARGUMENTS](#ARGUMENTS)

[gnutls\_pin\_callback\_t fn](#gnutls_pin_callback_t)

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

[void * userdata](#void)

data to be supplied to callback

# [DESCRIPTION](#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](#SINCE)

2.12.0

# [REPORTING BUGS](#REPORTING_BUGS)

Report bugs to <bugs@gnutls.org>.  
Home page: https://www.gnutls.org

# [COPYRIGHT](#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](#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/](https://www.gnutls.org/manual/)

3.8.13 gnutls

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Document: gnutls_pkcs11_set_pin_function(3) from gnutls 3.8.13-r1 (Chainguard OS)
Source: https://gitlab.com/gnutls/gnutls