NAME¶

gnutls_psk_set_client_credentials_function3 - API function

SYNOPSIS¶

#include <gnutls/gnutls.h>

void gnutls_psk_set_client_credentials_function3(gnutls_psk_client_credentials_t cred, gnutls_psk_client_credentials_function3 * func);

ARGUMENTS¶

gnutls_psk_client_credentials_t cred

is a gnutls_psk_server_credentials_t type.

gnutls_psk_client_credentials_function3 * func

is the callback function

DESCRIPTION¶

This function can be used to set a callback to retrieve the username and password for client PSK authentication. The callback's function form is: int (*callback)(gnutls_session_t, gnutls_datum_t* username, gnutls_datum_t* key, gnutls_datum_t* context, gnutls_psk_key_flags *flags);

This callback function has the same semantics as that of gnutls_psk_set_client_credentials_function2(), but it returns flags associated with the key. The callback may import external PSK using the method described in RFC 9258 by using gnutls_psk_format_imported_identity().

The data field of username , key , and context must be allocated using gnutls_malloc(). The username should be an ASCII string or UTF-8 string. In case of a UTF-8 string it is recommended to be following the PRECIS framework for usernames (rfc8265).

The callback function will be called once per handshake.

The callback function should return 0 on success. -1 indicates an error.

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/