gnutls\_certificate\_set\_known\_dh\_params(3) gnutls gnutls\_certificate\_set\_known\_dh\_params(3)

# [NAME](#NAME)

gnutls\_certificate\_set\_known\_dh\_params - API function

# [SYNOPSIS](#SYNOPSIS)

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

**int gnutls\_certificate\_set\_known\_dh\_params(gnutls\_certificate\_credentials\_t res, gnutls\_sec\_param\_t sec\_param);**

# [ARGUMENTS](#ARGUMENTS)

[gnutls\_certificate\_credentials\_t res](#gnutls_certificate_credentials_t)

is a gnutls\_certificate\_credentials\_t type

[gnutls\_sec\_param\_t sec\_param](#gnutls_sec_param_t)

is an option of the **gnutls\_sec\_param\_t** enumeration

# [DESCRIPTION](#DESCRIPTION)

This function will set the Diffie-Hellman parameters for a certificate server to use. These parameters will be used in Ephemeral Diffie-Hellman cipher suites and will be selected from the FFDHE set of RFC7919 according to the security level provided.

# [DEPRECATED](#DEPRECATED)

This function is unnecessary and discouraged on GnuTLS 3.6.0 or later. Since 3.6.0, DH parameters are negotiated following RFC7919.

# [RETURNS](#RETURNS)

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

# [SINCE](#SINCE)

3.5.6

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