---
name: "gnutls_x509_crt_set_issuer_dn_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_crt_set_issuer_dn_by_oid"
---

# gnutls\_x509\_crt\_set\_issuer\_dn\_by\_oid(3)

API function

## NAME

gnutls\_x509\_crt\_set\_issuer\_dn\_by\_oid - API function

## SYNOPSIS

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

**int gnutls\_x509\_crt\_set\_issuer\_dn\_by\_oid(gnutls\_x509\_crt\_t** *crt***, const char \*** *oid***, unsigned int** *raw\_flag***, const void \*** *name***, unsigned int** *sizeof\_name***);**

## ARGUMENTS

- gnutls\_x509\_crt\_t crt

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

- const char \* oid

  holds an Object Identifier in a null terminated string

- unsigned int raw\_flag

  must be 0, or 1 if the data are DER encoded

- const void \* name

  a pointer to the name

- unsigned int sizeof\_name

  holds the size of  *name*

## DESCRIPTION

This function will set the part of the name of the Certificate issuer, specified by the given OID.  The input string should be ASCII or UTF-8 encoded.

Some helper macros with popular OIDs can be found in gnutls/x509.h With this function you can only set the known OIDs. You can test for known OIDs using **gnutls\_x509\_dn\_oid\_known()**. For OIDs that are not known (by gnutls) you should properly DER encode your data, and call this function with  *raw\_flag* set.

Normally you do not need to call this function, since the signing operation will copy the signer's name as the issuer of the certificate.

## 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/