llsec: Configuration option for defining a constant LoWPAN-wide security level

This commit is contained in:
kkrentz 2013-05-24 02:01:43 -07:00
parent c396a85364
commit bb74fc320f
3 changed files with 90 additions and 3 deletions

View File

@ -78,6 +78,13 @@
#define NETSTACK_CONF_LLSEC nullsec_driver
#endif /* NETSTACK_CONF_LLSEC */
/* To avoid unnecessary complexity, we assume the common case of
a constant LoWPAN-wide IEEE 802.15.4 security level, which
can be specified by defining LLSEC802154_CONF_SECURITY_LEVEL. */
#ifndef LLSEC802154_CONF_SECURITY_LEVEL
#define LLSEC802154_CONF_SECURITY_LEVEL 0
#endif /* LLSEC802154_CONF_SECURITY_LEVEL */
/* NETSTACK_CONF_NETWORK specifies the network layer and can be either
sicslowpan_driver, for IPv6 networking, or rime_driver, for the
custom Rime network stack. */

View File

@ -0,0 +1,75 @@
/**
* \addtogroup llsec
* @{
*/
/**
* \defgroup llsec802154
*
* Common functionality of 802.15.4-compliant llsec_drivers.
*
* @{
*/
/*
* Copyright (c) 2013, Hasso-Plattner-Institut.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
*/
/**
* \file
* Common functionality of 802.15.4-compliant llsec_drivers.
* \author
* Konrad Krentz <konrad.krentz@gmail.com>
*/
#ifndef LLSEC802154_H_
#define LLSEC802154_H_
#include "net/mac/frame802154.h"
#ifdef LLSEC802154_CONF_SECURITY_LEVEL
#define LLSEC802154_SECURITY_LEVEL LLSEC802154_CONF_SECURITY_LEVEL
#else /* LLSEC802154_CONF_SECURITY_LEVEL */
#define LLSEC802154_SECURITY_LEVEL FRAME802154_SECURITY_LEVEL_NONE
#endif /* LLSEC802154_CONF_SECURITY_LEVEL */
#define LLSEC802154_MIC_LENGTH ((LLSEC802154_SECURITY_LEVEL & 3) * 4)
#ifdef LLSEC802154_CONF_USES_ENCRYPTION
#define LLSEC802154_USES_ENCRYPTION LLSEC802154_CONF_USES_ENCRYPTION
#else /* LLSEC802154_CONF_USES_ENCRYPTION */
#define LLSEC802154_USES_ENCRYPTION (LLSEC802154_SECURITY_LEVEL & (1 << 2))
#endif /* LLSEC802154_CONF_USES_ENCRYPTION */
#endif /* LLSEC802154_H_ */
/** @} */
/** @} */

View File

@ -96,9 +96,14 @@
#define FRAME802154_IEEE802154_2003 (0x00)
#define FRAME802154_IEEE802154_2006 (0x01)
#define FRAME802154_SECURITY_LEVEL_NONE (0)
#define FRAME802154_SECURITY_LEVEL_128 (3)
#define FRAME802154_SECURITY_LEVEL_NONE (0)
#define FRAME802154_SECURITY_LEVEL_MIC_32 (1)
#define FRAME802154_SECURITY_LEVEL_MIC_64 (2)
#define FRAME802154_SECURITY_LEVEL_MIC_128 (3)
#define FRAME802154_SECURITY_LEVEL_ENC (4)
#define FRAME802154_SECURITY_LEVEL_ENC_MIC_32 (5)
#define FRAME802154_SECURITY_LEVEL_ENC_MIC_64 (6)
#define FRAME802154_SECURITY_LEVEL_ENC_MIC_128 (7)
/**
* @brief The IEEE 802.15.4 frame has a number of constant/fixed fields that