---
name: "gnutls_x509_rdn_get_by_oid"
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_x509_rdn_get_by_oid"
---

# gnutls\_x509\_rdn\_get\_by\_oid(3)

API function

## NAME

gnutls\_x509\_rdn\_get\_by\_oid - API function

## SYNOPSIS

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

**int gnutls\_x509\_rdn\_get\_by\_oid(const gnutls\_datum\_t \*** *idn***, const char \*** *oid***, unsigned** *indx***, unsigned int** *raw\_flag***, void \*** *buf***, size\_t \*** *buf\_size***);**

## ARGUMENTS

- const gnutls\_datum\_t \* idn

  should contain a DER encoded RDN sequence

- const char \* oid

  an Object Identifier

- unsigned indx

  In case multiple same OIDs exist in the RDN indicates which to send. Use 0 for the first one.

- unsigned int raw\_flag

  If non-zero then the raw DER data are returned.

- void \* buf

  a pointer to a structure to hold the peer's name

- size\_t \* buf\_size

  holds the size of  *buf*

## DESCRIPTION

This function will return the name of the given Object identifier, of the RDN sequence.  The name will be encoded using the rules from RFC4514.

## RETURNS

On success, **GNUTLS\_E\_SUCCESS** (0) is returned, or **GNUTLS\_E\_SHORT\_MEMORY\_BUFFER** is returned and \* *buf\_size* is updated if the provided buffer is not long enough, otherwise a negative error value.

## 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/