---
name: "gnutls_x509_crq_get_attribute_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_crq_get_attribute_by_oid"
---

# gnutls\_x509\_crq\_get\_attribute\_by\_oid(3)

API function

## NAME

gnutls\_x509\_crq\_get\_attribute\_by\_oid - API function

## SYNOPSIS

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

**int gnutls\_x509\_crq\_get\_attribute\_by\_oid(gnutls\_x509\_crq\_t** *crq***, const char \*** *oid***, unsigned** *indx***, void \*** *buf***, size\_t \*** *buf\_size***);**

## ARGUMENTS

- gnutls\_x509\_crq\_t crq

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

- const char \* oid

  holds an Object Identifier in null-terminated string

- unsigned indx

  In case multiple same OIDs exist in the attribute list, this specifies which to get, use (0) to get the first one

- void \* buf

  a pointer to a structure to hold the attribute data (may be **NULL**)

- size\_t \* buf\_size

  initially holds the size of  *buf*

## DESCRIPTION

This function will return the attribute in the certificate request specified by the given Object ID.  The attribute will be DER encoded.

Attributes in a certificate request is an optional set of data appended to the request. Their interpretation depends on the CA policy.

## RETURNS

On success, **GNUTLS\_E\_SUCCESS** (0) is returned, 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/