Add AES-128 driver for CC26x0/CC13x0
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Atis Elsts
parent
4928a5e1e0
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0b31b090aa
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@ -44,6 +44,7 @@ CONTIKI_CPU_SOURCEFILES += rf-core.c rf-ble.c ieee-mode.c
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CONTIKI_CPU_SOURCEFILES += ble-cc2650.c ble-hal-cc26xx.c ble-addr.c rf-ble-cmd.c
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CONTIKI_CPU_SOURCEFILES += random.c soc-trng.c int-master.c
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CONTIKI_CPU_SOURCEFILES += spi-arch.c
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CONTIKI_CPU_SOURCEFILES += cc26xx-aes.c
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CONTIKI_SOURCEFILES += $(CONTIKI_CPU_SOURCEFILES)
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@ -102,6 +102,11 @@
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#define NETSTACK_RADIO_MAX_PAYLOAD_LEN 125
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/* Platform-specific (H/W) AES implementation */
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#ifndef AES_128_CONF
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#define AES_128_CONF cc26xx_aes_128_driver
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#endif /* AES_128_CONF */
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/** @} */
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/*---------------------------------------------------------------------------*/
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/**
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@ -0,0 +1,127 @@
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/*
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* Copyright (c) 2016, University of Bristol - http://www.bristol.ac.uk
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/**
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* \addtogroup cc26xx-aes
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* @{
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*
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* \file
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* Implementation of the AES driver for the CC26x0/CC13x0 SoC
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* \author
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* Atis Elsts <atis.elsts@gmail.com>
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*/
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#include "contiki.h"
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#include "dev/cc26xx-aes.h"
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#include "ti-lib.h"
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/*---------------------------------------------------------------------------*/
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#include "sys/log.h"
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#define LOG_MODULE "cc26xx-aes"
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#define LOG_LEVEL LOG_LEVEL_MAIN
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/*---------------------------------------------------------------------------*/
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static uint32_t skey[AES_128_KEY_LENGTH / sizeof(uint32_t)];
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/*---------------------------------------------------------------------------*/
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void
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cc26xx_aes_set_key(const uint8_t *key)
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{
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memcpy(skey, key, AES_128_KEY_LENGTH);
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}
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/*---------------------------------------------------------------------------*/
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static void
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encrypt_decrypt(uint8_t *plaintext_and_result, bool do_encrypt)
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{
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uint32_t result[AES_128_BLOCK_SIZE / sizeof(uint32_t)];
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unsigned status;
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int i;
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/* First, make sure the PERIPH PD is on */
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ti_lib_prcm_power_domain_on(PRCM_DOMAIN_PERIPH);
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while((ti_lib_prcm_power_domain_status(PRCM_DOMAIN_PERIPH)
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!= PRCM_DOMAIN_POWER_ON));
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/* Enable CRYPTO peripheral */
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ti_lib_prcm_peripheral_run_enable(PRCM_PERIPH_CRYPTO);
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ti_lib_prcm_load_set();
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while(!ti_lib_prcm_load_get());
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status = ti_lib_crypto_aes_load_key(skey, CRYPTO_KEY_AREA_0);
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if(status != AES_SUCCESS) {
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LOG_WARN("load key failed: %u\n", status);
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} else {
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status = ti_lib_crypto_aes_ecb((uint32_t *)plaintext_and_result, result, CRYPTO_KEY_AREA_0, do_encrypt, false);
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if(status != AES_SUCCESS) {
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LOG_WARN("ecb failed: %u\n", status);
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} else {
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for(i = 0; i < 100; ++i) {
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ti_lib_cpu_delay(10);
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status = ti_lib_crypto_aes_ecb_status();
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if(status != AES_DMA_BSY) {
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break;
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}
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}
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ti_lib_crypto_aes_ecb_finish();
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if(status != AES_SUCCESS) {
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LOG_WARN("ecb get result failed: %u\n", status);
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}
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}
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}
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ti_lib_prcm_peripheral_run_disable(PRCM_PERIPH_CRYPTO);
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ti_lib_prcm_load_set();
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while(!ti_lib_prcm_load_get());
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if(status == AES_SUCCESS) {
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memcpy(plaintext_and_result, result, AES_128_BLOCK_SIZE);
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} else {
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/* corrupt the result */
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plaintext_and_result[0] ^= 1;
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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cc26xx_aes_encrypt(uint8_t *plaintext_and_result)
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{
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encrypt_decrypt(plaintext_and_result, true);
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}
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/*---------------------------------------------------------------------------*/
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void
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cc26xx_aes_decrypt(uint8_t *cyphertext_and_result)
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{
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encrypt_decrypt(cyphertext_and_result, false);
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}
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/*---------------------------------------------------------------------------*/
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const struct aes_128_driver cc26xx_aes_128_driver = {
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cc26xx_aes_set_key,
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cc26xx_aes_encrypt
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};
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/** @} */
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@ -0,0 +1,80 @@
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/*
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* Copyright (c) 2016, University of Bristol - http://www.bristol.ac.uk
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/**
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* \addtogroup cc26xx
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* @{
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*
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* \defgroup cc26xx-aes CC26x0/CC13x0 AES-128
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*
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* AES-128 driver for the CC26x0/CC13x0 SoC
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* @{
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*
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* \file
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* Header file of the AES-128 driver for the CC26xx SoC
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* \author
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* Atis Elsts <atis.elsts@gmail.com>
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*/
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#ifndef CC2538_AES_H_
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#define CC2538_AES_H_
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#include "lib/aes-128.h"
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/**
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* \brief Set a key to use in subsequent encryption & decryption operations.
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* \param key The key to use
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*
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* The size of the key must be AES_128_KEY_LENGTH.
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*/
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void cc26xx_aes_set_key(const uint8_t *key);
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/**
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* \brief Encrypt a message using the SoC AES-128 hardware implementation
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* \param plaintext_and_result In: message to encrypt, out: the encrypted message.
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*
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* The size of the message must be AES_128_BLOCK_SIZE.
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* The key to use in the encryption must be set before calling this function.
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*/
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void cc26xx_aes_encrypt(uint8_t *plaintext_and_result);
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/**
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* \brief Decrypt a message using the SoC AES-128 hardware implementation
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* \param cyphertext_and_result In: message to decrypt, out: the decrypted message.
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*
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* The size of the message must be AES_128_BLOCK_SIZE.
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* The key to use in the decryption must be set before calling this function.
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*/
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void cc26xx_aes_decrypt(uint8_t *cyphertext_and_result);
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extern const struct aes_128_driver cc26xx_aes_128_driver;
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#endif /* CC2538_AES_H_ */
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/**
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* @}
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* @}
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*/
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@ -572,6 +572,14 @@
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#define ti_lib_watchdog_stall_enable(...) WatchdogStallEnable(__VA_ARGS__)
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#define ti_lib_watchdog_stall_disable(...) WatchdogStallDisable(__VA_ARGS__)
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/*---------------------------------------------------------------------------*/
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/* crypto.h */
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#include "driverlib/crypto.h"
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#define ti_lib_crypto_aes_load_key(...) CRYPTOAesLoadKey(__VA_ARGS__)
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#define ti_lib_crypto_aes_ecb(...) CRYPTOAesEcb(__VA_ARGS__)
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#define ti_lib_crypto_aes_ecb_status(...) CRYPTOAesEcbStatus(__VA_ARGS__)
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#define ti_lib_crypto_aes_ecb_finish(...) CRYPTOAesEcbFinish(__VA_ARGS__)
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/*---------------------------------------------------------------------------*/
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#endif /* TI_LIB_H_ */
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/*---------------------------------------------------------------------------*/
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/**
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