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API function


#include <gnutls/gnutls.h>

void gnutls_psk_set_server_credentials_function3(gnutls_psk_server_credentials_t cred, gnutls_psk_server_credentials_function3 func);


gnutls_psk_server_credentials_t cred

is a gnutls_psk_server_credentials_t type.

gnutls_psk_server_credentials_function3 func

is the callback function


This function can be used to set a callback to retrieve the user's PSK credentials. The callback's function form is: int (*callback)(gnutls_session_t, const gnutls_datum_t* username, gnutls_datum_t* key, gnutls_psk_key_flags *flags);

This callback function has the same semantics as that of gnutls_psk_set_server_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().

username contains the actual username. The  key must be filled in using the gnutls_malloc().

In case the callback returned a negative number then gnutls will assume that the username does not exist.

The callback function will only be called once per handshake.  The callback function should return 0 on success, while -1 indicates an error.

Reporting Bugs

Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org

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



3.8.6 gnutls