gnutls\_x509\_crt\_set\_subject\_key\_id(3) gnutls gnutls\_x509\_crt\_set\_subject\_key\_id(3)

# [NAME](#NAME)

gnutls\_x509\_crt\_set\_subject\_key\_id - API function

# [SYNOPSIS](#SYNOPSIS)

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

**int gnutls\_x509\_crt\_set\_subject\_key\_id(gnutls\_x509\_crt\_t cert, const void * id, size\_t id\_size);**

# [ARGUMENTS](#ARGUMENTS)

[gnutls\_x509\_crt\_t cert](#gnutls_x509_crt_t)

a certificate of type **gnutls\_x509\_crt\_t**

[const void * id](#const)

The key ID

[size\_t id\_size](#size_t)

Holds the size of the subject key ID field.

# [DESCRIPTION](#DESCRIPTION)

This function will set the X.509 certificate's subject key ID extension.

# [RETURNS](#RETURNS)

On success, **GNUTLS\_E\_SUCCESS** (0) is returned, otherwise a negative error value.

# [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_x509_crt_set_subject_key_id(3) from gnutls 3.8.13-r1 (Chainguard OS)
Source: https://gitlab.com/gnutls/gnutls