diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/ant/ant_encryption/ant_encrypt_config.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/ant/ant_encryption/ant_encrypt_config.c | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ant/ant_encryption/ant_encrypt_config.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ant/ant_encryption/ant_encrypt_config.c new file mode 100644 index 0000000..45e5614 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ant/ant_encryption/ant_encrypt_config.c @@ -0,0 +1,245 @@ +/** + * Copyright (c) 2015 - 2018, Nordic Semiconductor ASA + * + * 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, except as embedded into a Nordic + * Semiconductor ASA integrated circuit in a product or a software update for + * such product, 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 Nordic Semiconductor ASA nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 4. This software, with or without modification, must only be used with a + * Nordic Semiconductor ASA integrated circuit. + * + * 5. Any software provided in binary form under this license must not be reverse + * engineered, decompiled, modified and/or disassembled. + * + * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA 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. + * + */ +#include "sdk_common.h" +#if NRF_MODULE_ENABLED(ANT_ENCRYPT_CONFIG) +#include <stdlib.h> +#include "ant_encrypt_config.h" +#include "ant_interface.h" +#include "ant_parameters.h" + +#ifdef ANT_ENCRYPT_NEGOTIATION_SLAVE_ENABLED + #include "ant_encrypt_negotiation_slave.h" +#endif + + /*lint -e551 -save*/ +/** Flag for checking if stack was configured for encryption. */ +static bool m_stack_encryption_configured = false; + /*lint -restore */ + + /** Pointer to handler of module's events. */ +static ant_encryp_user_handler_t m_ant_enc_evt_handler = NULL; + +static ret_code_t ant_enc_advance_burs_config_apply( + ant_encrypt_adv_burst_settings_t const * const p_adv_burst_set); + +ret_code_t ant_stack_encryption_config(ant_encrypt_stack_settings_t const * const p_crypto_set) +{ + ret_code_t err_code; + + for ( uint32_t i = 0; i < p_crypto_set->key_number; i++) + { + err_code = sd_ant_crypto_key_set(i, p_crypto_set->pp_key[i]); + VERIFY_SUCCESS(err_code); + } + + if (p_crypto_set->p_adv_burst_config != NULL) + { + err_code = ant_enc_advance_burs_config_apply(p_crypto_set->p_adv_burst_config); + VERIFY_SUCCESS(err_code); + } + + // subcomands LUT for @ref sd_ant_crypto_info_set calls + const uint8_t set_enc_info_param_lut[] = + { + ENCRYPTION_INFO_SET_CRYPTO_ID, + ENCRYPTION_INFO_SET_CUSTOM_USER_DATA, + ENCRYPTION_INFO_SET_RNG_SEED + }; + + for ( uint32_t i = 0; i < sizeof(set_enc_info_param_lut); i++) + { + if ( p_crypto_set->info.pp_array[i] != NULL) + { + err_code = sd_ant_crypto_info_set(set_enc_info_param_lut[i], + p_crypto_set->info.pp_array[i]); + + VERIFY_SUCCESS(err_code); + } + } + + #ifdef ANT_ENCRYPT_NEGOTIATION_SLAVE_ENABLED + // all ANT channels have unsupported slave encryption tracking (even master's channel) + ant_channel_encryp_negotiation_slave_init(); + #endif + + m_ant_enc_evt_handler = NULL; + + m_stack_encryption_configured = true; + + return NRF_SUCCESS; +} + + +/** + * @brief Function for configuring advanced burst settings according to encryption requirements. + * + * @param p_adv_burst_set Pointer to ANT advanced burst settings. + * + * @retval Value returned by @ref sd_ant_adv_burst_config_set. + */ +static ret_code_t ant_enc_advance_burs_config_apply( + ant_encrypt_adv_burst_settings_t const * const p_adv_burst_set) +{ + uint8_t adv_burst_conf_str[ADV_BURST_CFG_MIN_SIZE] = + { ADV_BURST_MODE_ENABLE, 0, 0, 0, 0, 0, 0, 0 }; + + adv_burst_conf_str[ADV_BURST_CFG_PACKET_SIZE_INDEX] = p_adv_burst_set->packet_length; + adv_burst_conf_str[ADV_BURST_CFG_REQUIRED_FEATURES] = p_adv_burst_set->required_feature; + adv_burst_conf_str[ADV_BURST_CFG_OPTIONAL_FEATURES] = p_adv_burst_set->optional_feature; + + return sd_ant_adv_burst_config_set(adv_burst_conf_str, sizeof(adv_burst_conf_str)); +} + + +ret_code_t ant_channel_encrypt_config_perform(uint8_t channel_number, + ant_encrypt_channel_settings_t * p_crypto_config) +{ + return sd_ant_crypto_channel_enable(channel_number, + p_crypto_config->mode, + p_crypto_config->key_index, + p_crypto_config->decimation_rate); +} + + +ret_code_t ant_channel_encrypt_config(uint8_t channel_type, + uint8_t channel_number, + ant_encrypt_channel_settings_t * p_crypto_config) +{ + ret_code_t err_code; + + if (p_crypto_config != NULL) + { + // encryption of the stack should be initialized previously + if (m_stack_encryption_configured == false) + { + return NRF_ERROR_MODULE_NOT_INITIALIZED; + } + + switch (channel_type) + { + case CHANNEL_TYPE_MASTER: + err_code = ant_channel_encrypt_config_perform(channel_number, p_crypto_config); +#ifdef ANT_ENCRYPT_NEGOTIATION_SLAVE_ENABLED + ant_channel_encryp_tracking_state_set(channel_number, + ANT_ENC_CHANNEL_STAT_TRACKING_UNSUPPORTED); +#endif + break; + +#ifdef ANT_ENCRYPT_NEGOTIATION_SLAVE_ENABLED + case CHANNEL_TYPE_SLAVE: + ant_slave_channel_encrypt_config(channel_number, p_crypto_config); + + if (p_crypto_config->mode == ENCRYPTION_DISABLED_MODE) + { + err_code = ant_channel_encrypt_config_perform(channel_number, p_crypto_config); + ant_channel_encryp_tracking_state_set(channel_number, + ANT_ENC_CHANNEL_STAT_TRACKING_UNSUPPORTED); + } + else + { + ant_channel_encryp_tracking_state_set(channel_number, + ANT_ENC_CHANNEL_STAT_NOT_TRACKING); + err_code = NRF_SUCCESS; + } + break; +#endif + + default: + err_code = NRF_ERROR_INVALID_PARAM; + break; + } + } + else + { +#ifdef ANT_ENCRYPT_NEGOTIATION_SLAVE_ENABLED + ant_channel_encryp_tracking_state_set(channel_number, + ANT_ENC_CHANNEL_STAT_TRACKING_UNSUPPORTED); +#endif + err_code = NRF_SUCCESS; + } + + return err_code; +} + +/** @brief Function for calling the handler of module events.*/ +static void ant_encrypt_user_handler_try_to_run(uint8_t ant_channel, ant_encrypt_user_evt_t event) +{ + if (m_ant_enc_evt_handler != NULL) + { + m_ant_enc_evt_handler(ant_channel, event); + } +} + +/**@brief Function for handling an ANT stack event. + * @param[in] p_ant_evt ANT stack event. + * @param[in] p_context Context. + */ +static void ant_evt_handler(ant_evt_t * p_ant_evt, void * p_context) +{ + uint8_t const ant_channel = p_ant_evt->channel; + +#ifdef ANT_ENCRYPT_NEGOTIATION_SLAVE_ENABLED + ant_slave_encrypt_negotiation(p_ant_evt); +#endif + + switch (p_ant_evt->event) + { + case EVENT_RX_FAIL_GO_TO_SEARCH: + ant_encrypt_user_handler_try_to_run(ant_channel, ANT_ENC_EVT_CHANNEL_LOST); + break; + + case EVENT_ENCRYPT_NEGOTIATION_SUCCESS: + ant_encrypt_user_handler_try_to_run(ant_channel, ANT_ENC_EVT_NEGOTIATION_SUCCESS); + break; + + case EVENT_ENCRYPT_NEGOTIATION_FAIL: + ant_encrypt_user_handler_try_to_run(ant_channel, ANT_ENC_EVT_NEGOTIATION_FAIL); + break; + } +} + +NRF_SDH_ANT_OBSERVER(m_ant_observer, ANT_ENCRYPT_ANT_OBSERVER_PRIO, ant_evt_handler, NULL); + +void ant_enc_event_handler_register(ant_encryp_user_handler_t user_handler_func) +{ + m_ant_enc_evt_handler = user_handler_func; +} + +#endif // NRF_MODULE_ENABLED(ANT_ENCRYPT_CONFIG) |