Nordic Semiconductor / nRF51822

Nordic stack and drivers for the mbed BLE API

Dependents:   BLE_ANCS_SDAPI BLE_temperature BLE_HeartRate writable_gatt ... more

TARGET_MCU_NRF51822/sdk/source/drivers_nrf/hal/nrf_ecb.c@638:c90ae1400bf2, 2016-09-14 (annotated)

Committer:
Vincent Coubard
Date:
Wed Sep 14 14:39:43 2016 +0100
Revision:
638:c90ae1400bf2
Sync with bdab10dc0f90748b6989c8b577771bb403ca6bd8 from ARMmbed/mbed-os.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Vincent Coubard 638:c90ae1400bf2 1 /*
Vincent Coubard 638:c90ae1400bf2 2 * Copyright (c) Nordic Semiconductor ASA
Vincent Coubard 638:c90ae1400bf2 3 * All rights reserved.
Vincent Coubard 638:c90ae1400bf2 4 *
Vincent Coubard 638:c90ae1400bf2 5 * Redistribution and use in source and binary forms, with or without modification,
Vincent Coubard 638:c90ae1400bf2 6 * are permitted provided that the following conditions are met:
Vincent Coubard 638:c90ae1400bf2 7 *
Vincent Coubard 638:c90ae1400bf2 8 * 1. Redistributions of source code must retain the above copyright notice, this
Vincent Coubard 638:c90ae1400bf2 9 * list of conditions and the following disclaimer.
Vincent Coubard 638:c90ae1400bf2 10 *
Vincent Coubard 638:c90ae1400bf2 11 * 2. Redistributions in binary form must reproduce the above copyright notice, this
Vincent Coubard 638:c90ae1400bf2 12 * list of conditions and the following disclaimer in the documentation and/or
Vincent Coubard 638:c90ae1400bf2 13 * other materials provided with the distribution.
Vincent Coubard 638:c90ae1400bf2 14 *
Vincent Coubard 638:c90ae1400bf2 15 * 3. Neither the name of Nordic Semiconductor ASA nor the names of other
Vincent Coubard 638:c90ae1400bf2 16 * contributors to this software may be used to endorse or promote products
Vincent Coubard 638:c90ae1400bf2 17 * derived from this software without specific prior written permission.
Vincent Coubard 638:c90ae1400bf2 18 *
Vincent Coubard 638:c90ae1400bf2 19 *
Vincent Coubard 638:c90ae1400bf2 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
Vincent Coubard 638:c90ae1400bf2 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
Vincent Coubard 638:c90ae1400bf2 22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
Vincent Coubard 638:c90ae1400bf2 23 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
Vincent Coubard 638:c90ae1400bf2 24 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
Vincent Coubard 638:c90ae1400bf2 25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
Vincent Coubard 638:c90ae1400bf2 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
Vincent Coubard 638:c90ae1400bf2 27 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
Vincent Coubard 638:c90ae1400bf2 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
Vincent Coubard 638:c90ae1400bf2 29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Vincent Coubard 638:c90ae1400bf2 30 *
Vincent Coubard 638:c90ae1400bf2 31 */
Vincent Coubard 638:c90ae1400bf2 32
Vincent Coubard 638:c90ae1400bf2 33 /**
Vincent Coubard 638:c90ae1400bf2 34 * @file
Vincent Coubard 638:c90ae1400bf2 35 * @brief Implementation of AES ECB driver
Vincent Coubard 638:c90ae1400bf2 36 */
Vincent Coubard 638:c90ae1400bf2 37
Vincent Coubard 638:c90ae1400bf2 38
Vincent Coubard 638:c90ae1400bf2 39 //lint -e438
Vincent Coubard 638:c90ae1400bf2 40
Vincent Coubard 638:c90ae1400bf2 41 #include <stdlib.h>
Vincent Coubard 638:c90ae1400bf2 42 #include <stdbool.h>
Vincent Coubard 638:c90ae1400bf2 43 #include <string.h>
Vincent Coubard 638:c90ae1400bf2 44 #include "nrf.h"
Vincent Coubard 638:c90ae1400bf2 45 #include "nrf_ecb.h"
Vincent Coubard 638:c90ae1400bf2 46
Vincent Coubard 638:c90ae1400bf2 47 static uint8_t ecb_data[48]; ///< ECB data structure for RNG peripheral to access.
Vincent Coubard 638:c90ae1400bf2 48 static uint8_t* ecb_key; ///< Key: Starts at ecb_data
Vincent Coubard 638:c90ae1400bf2 49 static uint8_t* ecb_cleartext; ///< Cleartext: Starts at ecb_data + 16 bytes.
Vincent Coubard 638:c90ae1400bf2 50 static uint8_t* ecb_ciphertext; ///< Ciphertext: Starts at ecb_data + 32 bytes.
Vincent Coubard 638:c90ae1400bf2 51
Vincent Coubard 638:c90ae1400bf2 52 bool nrf_ecb_init(void)
Vincent Coubard 638:c90ae1400bf2 53 {
Vincent Coubard 638:c90ae1400bf2 54 ecb_key = ecb_data;
Vincent Coubard 638:c90ae1400bf2 55 ecb_cleartext = ecb_data + 16;
Vincent Coubard 638:c90ae1400bf2 56 ecb_ciphertext = ecb_data + 32;
Vincent Coubard 638:c90ae1400bf2 57
Vincent Coubard 638:c90ae1400bf2 58 NRF_ECB->ECBDATAPTR = (uint32_t)ecb_data;
Vincent Coubard 638:c90ae1400bf2 59 return true;
Vincent Coubard 638:c90ae1400bf2 60 }
Vincent Coubard 638:c90ae1400bf2 61
Vincent Coubard 638:c90ae1400bf2 62
Vincent Coubard 638:c90ae1400bf2 63 bool nrf_ecb_crypt(uint8_t * dest_buf, const uint8_t * src_buf)
Vincent Coubard 638:c90ae1400bf2 64 {
Vincent Coubard 638:c90ae1400bf2 65 uint32_t counter = 0x1000000;
Vincent Coubard 638:c90ae1400bf2 66 if(src_buf != ecb_cleartext)
Vincent Coubard 638:c90ae1400bf2 67 {
Vincent Coubard 638:c90ae1400bf2 68 memcpy(ecb_cleartext,src_buf,16);
Vincent Coubard 638:c90ae1400bf2 69 }
Vincent Coubard 638:c90ae1400bf2 70 NRF_ECB->EVENTS_ENDECB = 0;
Vincent Coubard 638:c90ae1400bf2 71 NRF_ECB->TASKS_STARTECB = 1;
Vincent Coubard 638:c90ae1400bf2 72 while(NRF_ECB->EVENTS_ENDECB == 0)
Vincent Coubard 638:c90ae1400bf2 73 {
Vincent Coubard 638:c90ae1400bf2 74 counter--;
Vincent Coubard 638:c90ae1400bf2 75 if(counter == 0)
Vincent Coubard 638:c90ae1400bf2 76 {
Vincent Coubard 638:c90ae1400bf2 77 return false;
Vincent Coubard 638:c90ae1400bf2 78 }
Vincent Coubard 638:c90ae1400bf2 79 }
Vincent Coubard 638:c90ae1400bf2 80 NRF_ECB->EVENTS_ENDECB = 0;
Vincent Coubard 638:c90ae1400bf2 81 if(dest_buf != ecb_ciphertext)
Vincent Coubard 638:c90ae1400bf2 82 {
Vincent Coubard 638:c90ae1400bf2 83 memcpy(dest_buf,ecb_ciphertext,16);
Vincent Coubard 638:c90ae1400bf2 84 }
Vincent Coubard 638:c90ae1400bf2 85 return true;
Vincent Coubard 638:c90ae1400bf2 86 }
Vincent Coubard 638:c90ae1400bf2 87
Vincent Coubard 638:c90ae1400bf2 88 void nrf_ecb_set_key(const uint8_t * key)
Vincent Coubard 638:c90ae1400bf2 89 {
Vincent Coubard 638:c90ae1400bf2 90 memcpy(ecb_key,key,16);
Vincent Coubard 638:c90ae1400bf2 91 }
Vincent Coubard 638:c90ae1400bf2 92
Vincent Coubard 638:c90ae1400bf2 93