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/*
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* Copyright (C) 2005-2012 Free Software Foundation, Inc.
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*
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* Author: Nikos Mavrogiannopoulos
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*
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* This file is part of GnuTLS.
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*
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* The GnuTLS is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>
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*
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*/
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#ifndef GNUTLS_LIB_AUTH_PSK_H
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#define GNUTLS_LIB_AUTH_PSK_H
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#include <auth.h>
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#include <auth/dh_common.h>
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typedef struct gnutls_psk_client_credentials_st {
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gnutls_datum_t username;
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gnutls_datum_t key;
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gnutls_psk_client_credentials_function2 *get_function;
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gnutls_psk_client_credentials_function *get_function_legacy;
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/* TLS 1.3 - The HMAC algorithm to use to compute the binder values */
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const mac_entry_st *binder_algo;
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} psk_client_credentials_st;
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typedef struct gnutls_psk_server_credentials_st {
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char *password_file;
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/* callback function, instead of reading the
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* password files.
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*/
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gnutls_psk_server_credentials_function2 *pwd_callback;
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gnutls_psk_server_credentials_function *pwd_callback_legacy;
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/* For DHE_PSK */
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gnutls_dh_params_t dh_params;
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unsigned int deinit_dh_params;
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gnutls_sec_param_t dh_sec_param;
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/* this callback is used to retrieve the DH or RSA
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* parameters.
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*/
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gnutls_params_function *params_func;
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/* Identity hint. */
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char *hint;
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/* TLS 1.3 - HMAC algorithm for the binder values */
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const mac_entry_st *binder_algo;
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} psk_server_cred_st;
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/* these structures should not use allocated data */
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typedef struct psk_auth_info_st {
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char username[MAX_USERNAME_SIZE + 1];
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uint16_t username_len;
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dh_info_st dh;
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char hint[MAX_USERNAME_SIZE + 1];
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} *psk_auth_info_t;
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typedef struct psk_auth_info_st psk_auth_info_st;
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inline static
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void _gnutls_copy_psk_username(psk_auth_info_t info, const gnutls_datum_t *username)
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{
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assert(sizeof(info->username) > username->size);
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memcpy(info->username, username->data, username->size);
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info->username[username->size] = 0;
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info->username_len = username->size;
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}
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#ifdef ENABLE_PSK
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int
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_gnutls_set_psk_session_key(gnutls_session_t session, gnutls_datum_t * key,
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gnutls_datum_t * psk2);
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int _gnutls_gen_psk_server_kx(gnutls_session_t session,
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gnutls_buffer_st * data);
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int _gnutls_gen_psk_client_kx(gnutls_session_t, gnutls_buffer_st *);
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#else
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#define _gnutls_set_psk_session_key(x,y,z) GNUTLS_E_UNIMPLEMENTED_FEATURE
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#endif /* ENABLE_PSK */
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#endif /* GNUTLS_LIB_AUTH_PSK_H */
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