gnutls\_x509\_crt\_get\_dn\_oid(3) gnutls gnutls\_x509\_crt\_get\_dn\_oid(3)

# [NAME](#NAME)

gnutls\_x509\_crt\_get\_dn\_oid - API function

# [SYNOPSIS](#SYNOPSIS)

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

**int gnutls\_x509\_crt\_get\_dn\_oid(gnutls\_x509\_crt\_t cert, unsigned indx, void * oid, size\_t * oid\_size);**

# [ARGUMENTS](#ARGUMENTS)

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

should contain a **gnutls\_x509\_crt\_t** type

[unsigned indx](#unsigned)

This specifies which OID to return. Use (0) to get the first one.

[void * oid](#void)

a pointer to a buffer to hold the OID (may be null)

[size\_t * oid\_size](#size_t)

initially holds the size of *oid*

# [DESCRIPTION](#DESCRIPTION)

This function will extract the OIDs of the name of the Certificate subject specified by the given index.

If *oid* is null then only the size will be filled. The *oid* returned will be null terminated, although *oid\_size* will not account for the trailing null.

# [RETURNS](#RETURNS)

**GNUTLS\_E\_SHORT\_MEMORY\_BUFFER** if the provided buffer is not long enough, and in that case the *buf\_size* will be updated with the required size. **GNUTLS\_E\_REQUESTED\_DATA\_NOT\_AVAILABLE** if there are no data in the current index. On success 0 is returned.

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