gnutls\_session\_set\_premaster(3) gnutls gnutls\_session\_set\_premaster(3)

# [NAME](#NAME)

gnutls\_session\_set\_premaster - API function

# [SYNOPSIS](#SYNOPSIS)

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

**int gnutls\_session\_set\_premaster(gnutls\_session\_t session, unsigned int entity, gnutls\_protocol\_t version, gnutls\_kx\_algorithm\_t kx, gnutls\_cipher\_algorithm\_t cipher, gnutls\_mac\_algorithm\_t mac, gnutls\_compression\_method\_t comp, const gnutls\_datum\_t * master, const gnutls\_datum\_t * session\_id);**

# [ARGUMENTS](#ARGUMENTS)

[gnutls\_session\_t session](#gnutls_session_t)

is a **gnutls\_session\_t** type.

[unsigned int entity](#unsigned)

GNUTLS\_SERVER or GNUTLS\_CLIENT

[gnutls\_protocol\_t version](#gnutls_protocol_t)

the TLS protocol version

[gnutls\_kx\_algorithm\_t kx](#gnutls_kx_algorithm_t)

the key exchange method

[gnutls\_cipher\_algorithm\_t cipher](#gnutls_cipher_algorithm_t)

the cipher

[gnutls\_mac\_algorithm\_t mac](#gnutls_mac_algorithm_t)

the MAC algorithm

[gnutls\_compression\_method\_t comp](#gnutls_compression_method_t)

the compression method (ignored)

[const gnutls\_datum\_t * master](#const)

the master key to use

[const gnutls\_datum\_t * session\_id](#const~2)

the session identifier

# [DESCRIPTION](#DESCRIPTION)

This function sets the premaster secret in a session. This is a function intended for exceptional uses. Do not use this function unless you are implementing a legacy protocol. Use **gnutls\_session\_set\_data()** instead.

# [RETURNS](#RETURNS)

On success, **GNUTLS\_E\_SUCCESS** (0) is returned, otherwise an error code 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

---

Document: gnutls_session_set_premaster(3) from gnutls 3.8.13-r3 (Chainguard OS)
Source: https://gitlab.com/gnutls/gnutls