160 lines
6.7 KiB
C
160 lines
6.7 KiB
C
/*
|
|
* Original file:
|
|
* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
|
|
* All rights reserved.
|
|
*
|
|
* Port to Contiki:
|
|
* Copyright (c) 2013, ADVANSEE - http://www.advansee.com/
|
|
* 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 copyright holder 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 COPYRIGHT HOLDERS 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
|
|
* COPYRIGHT HOLDER 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.
|
|
*/
|
|
/**
|
|
* \addtogroup cc2538-aes
|
|
* @{
|
|
*
|
|
* \defgroup cc2538-ccm cc2538 AES-CCM
|
|
*
|
|
* Driver for the cc2538 AES-CCM mode of the security core
|
|
* @{
|
|
*
|
|
* \file
|
|
* Header file for the cc2538 AES-CCM driver
|
|
*/
|
|
#ifndef CCM_H_
|
|
#define CCM_H_
|
|
|
|
#include "contiki.h"
|
|
#include "dev/aes.h"
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
/*---------------------------------------------------------------------------*/
|
|
/** \name AES-CCM constants
|
|
* @{
|
|
*/
|
|
#define CCM_FLAGS_LEN 1
|
|
#define CCM_NONCE_LEN_LEN (AES_IV_LEN - CCM_FLAGS_LEN)
|
|
#define CCM_MIC_MAX_LEN AES_TAG_LEN
|
|
/** @} */
|
|
/*---------------------------------------------------------------------------*/
|
|
/** \name AES-CCM functions
|
|
* @{
|
|
*/
|
|
|
|
/** \brief Starts a CCM authentication and encryption operation
|
|
* \param len_len Number of octets in length field (2, 4, or 8)
|
|
* \param key_area Area in Key RAM where the key is stored (0 to
|
|
* \c AES_KEY_AREAS - 1)
|
|
* \param nonce Pointer to nonce (\c CCM_NONCE_LEN_LEN - \p len_len octets)
|
|
* \param adata Pointer to additional authenticated data in SRAM, or \c NULL
|
|
* \param adata_len Length of additional authenticated data in octets, or \c 0
|
|
* \param pdata Pointer to message to authenticate and encrypt in SRAM, or
|
|
* \c NULL
|
|
* \param pdata_len Length of message to authenticate and encrypt in octets, or
|
|
* \c 0
|
|
* \param cdata Pointer to encrypted message in SRAM (may be \p pdata), or
|
|
* \c NULL
|
|
* \param mic_len Number of octets in authentication field (even value between 0
|
|
* and \c CCM_MIC_MAX_LEN)
|
|
* \param process Process to be polled upon completion of the operation, or
|
|
* \c NULL
|
|
* \return \c CRYPTO_SUCCESS if successful, or CRYPTO/AES/CCM error code
|
|
*/
|
|
uint8_t ccm_auth_encrypt_start(uint8_t len_len, uint8_t key_area,
|
|
const void *nonce, const void *adata,
|
|
uint16_t adata_len, const void *pdata,
|
|
uint16_t pdata_len, void *cdata, uint8_t mic_len,
|
|
struct process *process);
|
|
|
|
/** \brief Checks the status of the CCM authentication and encryption operation
|
|
* \retval false Result not yet available, and no error occurred
|
|
* \retval true Result available, or error occurred
|
|
*/
|
|
#define ccm_auth_encrypt_check_status aes_auth_crypt_check_status
|
|
|
|
/** \brief Gets the result of the CCM authentication and encryption operation
|
|
* \param mic Pointer to authentication field, or \c NULL
|
|
* \param mic_len Number of octets in authentication field (even value between 0
|
|
* and \c CCM_MIC_MAX_LEN)
|
|
* \return \c CRYPTO_SUCCESS if successful, or CRYPTO/AES/CCM error code
|
|
* \note This function must be called only after \c ccm_auth_encrypt_start().
|
|
*/
|
|
uint8_t ccm_auth_encrypt_get_result(void *mic, uint8_t mic_len);
|
|
|
|
/** \brief Starts a CCM authentication checking and decryption operation
|
|
* \param len_len Number of octets in length field (2, 4, or 8)
|
|
* \param key_area Area in Key RAM where the key is stored (0 to
|
|
* \c AES_KEY_AREAS - 1)
|
|
* \param nonce Pointer to nonce (\c CCM_NONCE_LEN_LEN - \p len_len octets)
|
|
* \param adata Pointer to additional authenticated data in SRAM, or \c NULL
|
|
* \param adata_len Length of additional authenticated data in octets, or \c 0
|
|
* \param cdata Pointer to encrypted and authenticated message in SRAM
|
|
* \param cdata_len Length of encrypted and authenticated message in octets
|
|
* \param pdata Pointer to decrypted message in SRAM (may be \p cdata), or
|
|
* \c NULL
|
|
* \param mic_len Number of octets in authentication field (even value between 0
|
|
* and \c CCM_MIC_MAX_LEN)
|
|
* \param process Process to be polled upon completion of the operation, or
|
|
* \c NULL
|
|
* \return \c CRYPTO_SUCCESS if successful, or CRYPTO/AES/CCM error code
|
|
*/
|
|
uint8_t ccm_auth_decrypt_start(uint8_t len_len, uint8_t key_area,
|
|
const void *nonce, const void *adata,
|
|
uint16_t adata_len, const void *cdata,
|
|
uint16_t cdata_len, void *pdata, uint8_t mic_len,
|
|
struct process *process);
|
|
|
|
/** \brief Checks the status of the CCM authentication checking and decryption
|
|
* operation
|
|
* \retval false Result not yet available, and no error occurred
|
|
* \retval true Result available, or error occurred
|
|
*/
|
|
#define ccm_auth_decrypt_check_status aes_auth_crypt_check_status
|
|
|
|
/** \brief Gets the result of the CCM authentication checking and decryption
|
|
* operation
|
|
* \param cdata Pointer to encrypted and authenticated message
|
|
* \param cdata_len Length of encrypted and authenticated message in octets
|
|
* \param mic Pointer to authentication field, or \c NULL
|
|
* \param mic_len Number of octets in authentication field (even value between 0
|
|
* and \c CCM_MIC_MAX_LEN)
|
|
* \return \c CRYPTO_SUCCESS if successful, or CRYPTO/AES/CCM error code
|
|
* \note This function must be called only after \c ccm_auth_decrypt_start().
|
|
*/
|
|
uint8_t ccm_auth_decrypt_get_result(const void *cdata, uint16_t cdata_len,
|
|
void *mic, uint8_t mic_len);
|
|
|
|
/** @} */
|
|
|
|
#endif /* CCM_H_ */
|
|
|
|
/**
|
|
* @}
|
|
* @}
|
|
*/
|