| /* |
| * Copyright (c) 2012 - 2019, 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 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. |
| */ |
| |
| #ifndef NRF_ECB_H__ |
| #define NRF_ECB_H__ |
| |
| #include <nrfx.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /** |
| * @defgroup nrf_ecb_drv AES ECB encryption driver |
| * @{ |
| * @ingroup nrf_ecb |
| * @brief Driver for the Advanced Encryption Standard (AES) Electronic Code Book (ECB) peripheral. |
| * |
| * To encrypt data, the peripheral must first be powered on |
| * using @ref nrf_ecb_init. Next, the key must be set using @ref nrf_ecb_set_key. |
| */ |
| |
| /** |
| * @brief Function for initializing and powering on the ECB peripheral. |
| * |
| * This function allocates memory for the ECBDATAPTR. |
| * |
| * @retval true The initialization was successful. |
| * @retval false The power-on failed. |
| */ |
| bool nrf_ecb_init(void); |
| |
| /** |
| * @brief Function for encrypting 16-byte data using current key. |
| * |
| * This function avoids unnecessary copying of data if the parameters point to the |
| * correct locations in the ECB data structure. |
| * |
| * @param dst Result of encryption, 16 bytes will be written. |
| * @param src Source with 16-byte data to be encrypted. |
| * |
| * @retval true The encryption operation completed. |
| * @retval false The encryption operation did not complete. |
| */ |
| bool nrf_ecb_crypt(uint8_t * dst, const uint8_t * src); |
| |
| /** |
| * @brief Function for setting the key to be used for encryption. |
| * |
| * @param key Pointer to the key. 16 bytes will be read. |
| */ |
| void nrf_ecb_set_key(const uint8_t * key); |
| |
| /** @} */ |
| |
| /** |
| * @defgroup nrf_ecb_hal AES ECB encryption HAL |
| * @{ |
| * @ingroup nrf_ecb |
| * @brief Hardware access layer (HAL) for managing the Advanced Encryption Standard (AES) Electronic Codebook (ECB) peripheral. |
| */ |
| |
| /** @brief ECB tasks. */ |
| typedef enum |
| { |
| NRF_ECB_TASK_STARTECB = offsetof(NRF_ECB_Type, TASKS_STARTECB), /**< Task for starting the ECB block encryption. */ |
| NRF_ECB_TASK_STOPECB = offsetof(NRF_ECB_Type, TASKS_STOPECB), /**< Task for stopping the ECB block encryption. */ |
| } nrf_ecb_task_t; |
| |
| /** @brief ECB events. */ |
| typedef enum |
| { |
| NRF_ECB_EVENT_ENDECB = offsetof(NRF_ECB_Type, EVENTS_ENDECB), /**< ECB block encrypt complete. */ |
| NRF_ECB_EVENT_ERRORECB = offsetof(NRF_ECB_Type, EVENTS_ERRORECB), /**< ECB block encrypt aborted because of a STOPECB task or due to an error. */ |
| } nrf_ecb_event_t; |
| |
| /** @brief ECB interrupts. */ |
| typedef enum |
| { |
| NRF_ECB_INT_ENDECB_MASK = ECB_INTENSET_ENDECB_Msk, ///< Interrupt on ENDECB event. |
| NRF_ECB_INT_ERRORECB_MASK = ECB_INTENSET_ERRORECB_Msk, ///< Interrupt on ERRORECB event. |
| } nrf_ecb_int_mask_t; |
| |
| |
| /** |
| * @brief Function for activating the specified ECB task. |
| * |
| * @param[in] p_reg Pointer to the peripheral register structure. |
| * @param[in] task Task to be activated. |
| */ |
| __STATIC_INLINE void nrf_ecb_task_trigger(NRF_ECB_Type * p_reg, nrf_ecb_task_t task); |
| |
| /** |
| * @brief Function for getting the address of the specified ECB task register. |
| * |
| * @param[in] p_reg Pointer to the peripheral register structure. |
| * @param[in] task Requested task. |
| * |
| * @return Address of the specified task register. |
| */ |
| __STATIC_INLINE uint32_t nrf_ecb_task_address_get(NRF_ECB_Type const * p_reg, |
| nrf_ecb_task_t task); |
| |
| /** |
| * @brief Function for clearing the specified ECB event. |
| * |
| * @param[in] p_reg Pointer to the peripheral register structure. |
| * @param[in] event Event to clear. |
| */ |
| __STATIC_INLINE void nrf_ecb_event_clear(NRF_ECB_Type * p_reg, nrf_ecb_event_t event); |
| |
| /** |
| * @brief Function for retrieving the state of the ECB event. |
| * |
| * @param[in] p_reg Pointer to the structure of registers of the peripheral. |
| * @param[in] event Event to be checked. |
| * |
| * @retval true The event has been generated. |
| * @retval false The event has not been generated. |
| */ |
| __STATIC_INLINE bool nrf_ecb_event_check(NRF_ECB_Type const * p_reg, nrf_ecb_event_t event); |
| |
| /** |
| * @brief Function for getting the address of the specified ECB event register. |
| * |
| * @param[in] p_reg Pointer to the peripheral register structure. |
| * @param[in] event Requested event. |
| * |
| * @return Address of the specified event register. |
| */ |
| __STATIC_INLINE uint32_t nrf_ecb_event_address_get(NRF_ECB_Type const * p_reg, |
| nrf_ecb_event_t event); |
| |
| /** |
| * @brief Function for enabling the specified interrupts. |
| * |
| * @param[in] p_reg Pointer to the peripheral register structure. |
| * @param[in] mask Interrupts to be enabled. |
| */ |
| __STATIC_INLINE void nrf_ecb_int_enable(NRF_ECB_Type * p_reg, uint32_t mask); |
| |
| /** |
| * @brief Function for disabling the specified interrupts. |
| * |
| * @param[in] p_reg Pointer to the peripheral register structure. |
| * @param[in] mask Interrupts to be disabled. |
| */ |
| __STATIC_INLINE void nrf_ecb_int_disable(NRF_ECB_Type * p_reg, uint32_t mask); |
| |
| /** |
| * @brief Function for retrieving the state of a given interrupt. |
| * |
| * @param[in] p_reg Pointer to the peripheral register structure. |
| * @param[in] ecb_int Interrupt to be checked. |
| * |
| * @retval true The interrupt is enabled. |
| * @retval false The interrupt is not enabled. |
| */ |
| __STATIC_INLINE bool nrf_ecb_int_enable_check(NRF_ECB_Type const * p_reg, |
| nrf_ecb_int_mask_t ecb_int); |
| |
| /** |
| * @brief Function for setting the pointer to the ECB data buffer. |
| * |
| * @note The buffer has to be placed in the Data RAM region. |
| * For description of the data structure in this buffer, see the Product Specification. |
| * |
| * @param[in] p_reg Pointer to the peripheral register structure. |
| * @param[in] p_buffer Pointer to the ECB data buffer. |
| */ |
| __STATIC_INLINE void nrf_ecb_data_pointer_set(NRF_ECB_Type * p_reg, void const * p_buffer); |
| |
| /** |
| * @brief Function for getting the pointer to the ECB data buffer. |
| * |
| * @param[in] p_reg Pointer to the peripheral register structure. |
| * |
| * @return Pointer to the ECB data buffer. |
| */ |
| __STATIC_INLINE void * nrf_ecb_data_pointer_get(NRF_ECB_Type const * p_reg); |
| |
| #ifndef SUPPRESS_INLINE_IMPLEMENTATION |
| |
| __STATIC_INLINE void nrf_ecb_task_trigger(NRF_ECB_Type * p_reg, nrf_ecb_task_t task) |
| { |
| *((volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)task)) = 0x1UL; |
| } |
| |
| __STATIC_INLINE uint32_t nrf_ecb_task_address_get(NRF_ECB_Type const * p_reg, |
| nrf_ecb_task_t task) |
| { |
| return ((uint32_t)p_reg + (uint32_t)task); |
| } |
| |
| __STATIC_INLINE void nrf_ecb_event_clear(NRF_ECB_Type * p_reg, nrf_ecb_event_t event) |
| { |
| *((volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)event)) = 0x0UL; |
| #if __CORTEX_M == 0x04 |
| volatile uint32_t dummy = *((volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)event)); |
| (void)dummy; |
| #endif |
| } |
| |
| __STATIC_INLINE bool nrf_ecb_event_check(NRF_ECB_Type const * p_reg, nrf_ecb_event_t event) |
| { |
| return (bool)*(volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)event); |
| } |
| |
| __STATIC_INLINE uint32_t nrf_ecb_event_address_get(NRF_ECB_Type const * p_reg, |
| nrf_ecb_event_t event) |
| { |
| return ((uint32_t)p_reg + (uint32_t)event); |
| } |
| |
| __STATIC_INLINE void nrf_ecb_int_enable(NRF_ECB_Type * p_reg, uint32_t mask) |
| { |
| p_reg->INTENSET = mask; |
| } |
| |
| __STATIC_INLINE void nrf_ecb_int_disable(NRF_ECB_Type * p_reg, uint32_t mask) |
| { |
| p_reg->INTENCLR = mask; |
| } |
| |
| __STATIC_INLINE bool nrf_ecb_int_enable_check(NRF_ECB_Type const * p_reg, |
| nrf_ecb_int_mask_t ecb_int) |
| { |
| return (bool)(p_reg->INTENSET & ecb_int); |
| } |
| |
| __STATIC_INLINE void nrf_ecb_data_pointer_set(NRF_ECB_Type * p_reg, void const * p_buffer) |
| { |
| p_reg->ECBDATAPTR = (uint32_t)p_buffer; |
| } |
| |
| __STATIC_INLINE void * nrf_ecb_data_pointer_get(NRF_ECB_Type const * p_reg) |
| { |
| return (void *)(p_reg->ECBDATAPTR); |
| } |
| |
| #endif // SUPPRESS_INLINE_IMPLEMENTATION |
| |
| /** @} */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif // NRF_ECB_H__ |
| |