/* ---------------------------------------------------------------------------- | |
* SAM Software Package License | |
* ---------------------------------------------------------------------------- | |
* Copyright (c) 2015, Atmel Corporation | |
* | |
* All rights reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions are met: | |
* | |
* - Redistributions of source code must retain the above copyright notice, | |
* this list of conditions and the disclaimer below. | |
* | |
* Atmel's name may not be used to endorse or promote products derived from | |
* this software without specific prior written permission. | |
* | |
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR | |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE | |
* DISCLAIMED. IN NO EVENT SHALL ATMEL 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. | |
* ---------------------------------------------------------------------------- | |
*/ | |
#ifndef _TDES_ | |
#define _TDES_ | |
/*---------------------------------------------------------------------------- | |
* Headers | |
*----------------------------------------------------------------------------*/ | |
#include "chip.h" | |
/*---------------------------------------------------------------------------- | |
* Definitions | |
*----------------------------------------------------------------------------*/ | |
#define MODE_SINGLE_DES 0x00 | |
#define MODE_TRIPLE_DES 0x01 | |
#define MODE_XTEA 0x02 | |
/*---------------------------------------------------------------------------- | |
* Exported functions | |
*----------------------------------------------------------------------------*/ | |
/** | |
* \brief Starts Manual encryption/decryption process. | |
*/ | |
void tdes_start(void); | |
/** | |
* \brief Resets the TDES. | |
* A software triggered hardware reset of the TDES interface is performed. | |
*/ | |
void tdes_soft_reset(void); | |
/** | |
* \brief Configures an TDES peripheral with the specified parameters. | |
* \param mode Desired value for the TDES_MR mode register (see the datasheet). | |
*/ | |
void tdes_configure(uint32_t mode); | |
/** | |
* \brief Enables the selected interrupts sources on a TDES peripheral. | |
* \param sources Bitwise OR of selected interrupt sources. | |
*/ | |
void tdes_enable_it(uint32_t sources); | |
/** | |
* \brief Disables the selected interrupts sources on a TDES peripheral. | |
* \param sources Bitwise OR of selected interrupt sources. | |
*/ | |
void tdes_disable_it(uint32_t sources); | |
/** | |
* \brief Get the current status register of the given TDES peripheral. | |
* \return TDES status register. | |
*/ | |
extern uint32_t tdes_get_status(void); | |
/** | |
* \brief Set KEY 1/2/3. | |
* \param key_word0 Key x, word 0 | |
* \param key_word1 Key x, word 1 | |
*/ | |
void tdes_write_key1(uint32_t key_word0, uint32_t key_word1); | |
void tdes_write_key2(uint32_t key_word0, uint32_t key_word1); | |
void tdes_write_key3(uint32_t key_word0, uint32_t key_word1); | |
/** | |
* \brief Set the two 32-bit input data registers. Allows to set the 64-bit data | |
* block used for encryption/decryption. | |
* \param data0 Corresponds to the first word of the data to be processed. | |
* \param data1 Corresponds to the last word of the data to be processed. | |
*/ | |
void tdes_set_input(uint32_t data0, uint32_t data1); | |
/** | |
* \brief Read from the two 32-bit data registers containing the 64-bit data | |
* block which has been encrypted/decrypted. | |
* \param data0 Points to the first word. | |
* \param data1 Points to the second word. | |
*/ | |
void tdes_get_output(uint32_t *data0, uint32_t *data1); | |
/** | |
* \brief Set the 64-bit initialization vector data block, which is used by | |
* specific modes of operation as an additional initial input. | |
* \param v0 Corresponds to the first word of the initialization vector. | |
* \param v1 Corresponds to the second word of the initialization vector. | |
*/ | |
void tdes_set_vector(uint32_t v0, uint32_t v1); | |
/** | |
* \brief Set the 6-bit complete rounds. | |
* \param rounds Corresponds to rounds+1 complete round. | |
*/ | |
void tdes_set_xtea_rounds(uint32_t rounds); | |
#endif /* #ifndef _TDES_ */ |