osd-contiki/core/dev/cc2420-aes.h
nifi 55e0fec37e * Changed to write keys to CC2420 RAM big-endian order
* Fixed cc2420_aes_cipher() to wait for encryption to finish before reading result
2010-03-15 23:04:54 +00:00

77 lines
3 KiB
C

/*
* Copyright (c) 2008, Swedish Institute of Computer Science.
* 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.
*
* $Id: cc2420-aes.h,v 1.3 2010/03/15 23:04:54 nifi Exp $
*/
/**
* \file
* Interface to the CC2420 AES encryption/decryption functions
* \author
* Adam Dunkels <adam@sics.se>
*/
#ifndef __CC2420_AES_H__
#define __CC2420_AES_H__
/**
* \brief Setup an AES key
* \param key A pointer to a 16-byte AES key
* \param index The key index: either 0 or 1.
*
* This function sets up an AES key with the CC2420
* chip. The AES key can later be used with the
* cc2420_aes_cipher() function to encrypt or decrypt
* data.
*
* The CC2420 can store two separate keys in its
* memory. The keys are indexed as 0 or 1 and the key
* index is given by the 'index' parameter.
*
*/
void cc2420_aes_set_key(const uint8_t *key, int index);
/**
* \brief Encrypt/decrypt data with AES
* \param data A pointer to the data to be encrypted/decrypted
* \param len The length of the data to be encrypted/decrypted
* \param key_index The key to use. The key must have previously been set up with cc2420_aes_set_key().
*
* This function encrypts/decrypts data with AES. A
* pointer to the data is passed as a parameter, and the
* function overwrites the data with the encrypted data.
*
*/
void cc2420_aes_cipher(uint8_t *data, int len, int key_index);
#endif /* __CC2420_AES_H__ */