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/*******************************************************************************
*
* Copyright (c) 2011, 2012, 2013, 2014, 2015 Olaf Bergmann (TZI) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Eclipse Distribution License v. 1.0 which accompanies this distribution.
*
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Olaf Bergmann - initial API and implementation
* Hauke Mehrtens - memory optimization, ECC integration
*
*******************************************************************************/
/**
* @file state.h
* @brief state information for DTLS FSM
*/
#ifndef _DTLS_STATE_H_
#define _DTLS_STATE_H_
#include <sys/types.h>
#include <stdint.h>
#include "global.h"
#include "hmac.h"
typedef enum {
DTLS_STATE_INIT = 0, DTLS_STATE_WAIT_CLIENTHELLO, DTLS_STATE_WAIT_CLIENTCERTIFICATE,
DTLS_STATE_WAIT_CLIENTKEYEXCHANGE, DTLS_STATE_WAIT_CERTIFICATEVERIFY,
DTLS_STATE_WAIT_CHANGECIPHERSPEC,
DTLS_STATE_WAIT_FINISHED, DTLS_STATE_FINISHED,
/* client states */
DTLS_STATE_CLIENTHELLO, DTLS_STATE_WAIT_SERVERCERTIFICATE, DTLS_STATE_WAIT_SERVERKEYEXCHANGE,
DTLS_STATE_WAIT_SERVERHELLODONE,
DTLS_STATE_CONNECTED,
DTLS_STATE_CLOSING,
DTLS_STATE_CLOSED
} dtls_state_t;
typedef struct {
uint16_t mseq_s; /**< send handshake message sequence number counter */
uint16_t mseq_r; /**< received handshake message sequence number counter */
uint16_t read_epoch; /**< handshake's current read epoch */
/** pending config that is updated during handshake */
/* FIXME: dtls_security_parameters_t pending_config; */
/* temporary storage for the final handshake hash */
dtls_hash_ctx hs_hash;
/* temporary storage for the extended master secret handshake hash */
dtls_hash_ctx ext_hash;
} dtls_hs_state_t;
#endif /* _DTLS_STATE_H_ */