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/**
******************************************************************************
* @file random_crypto.c
* @author MCD Application Team
* @brief This file contains OpenThread cryptographic random number generator
* API shared between M0 and M4.
******************************************************************************
* @attention
*
* <h2><center>© Copyright (c) 2019 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under Ultimate Liberty license
* SLA0044, the "License"; You may not use this file except in compliance with
* the License. You may obtain a copy of the License at:
* www.st.com/SLA0044
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32wbxx_hal.h"
#include "stm32wbxx_core_interface_def.h"
#include "tl_thread_hci.h"
/* Include definition of compilation flags requested for OpenThread configuration */
#include OPENTHREAD_CONFIG_FILE
#include "instance.h"
#include "random_crypto.h"
#include <mbedtls/ctr_drbg.h>
otError otRandomCryptoFillBuffer(uint8_t *aBuffer, uint16_t aSize)
{
Pre_OtCmdProcessing();
/* prepare buffer */
Thread_OT_Cmd_Request_t* p_ot_req = THREAD_Get_OTCmdPayloadBuffer();
p_ot_req->ID = MSG_M4TOM0_OT_RANDOM_CRYPTO_FILL_BUFFER;
p_ot_req->Size=2;
p_ot_req->Data[0] = (uint32_t) aBuffer;
p_ot_req->Data[1] = (uint32_t) aSize;
Ot_Cmd_Transfer();
p_ot_req = THREAD_Get_OTCmdRspPayloadBuffer();
return (otError)p_ot_req->Data[0];
}
mbedtls_ctr_drbg_context *otRandomCryptoMbedTlsContextGet(void)
{
Pre_OtCmdProcessing();
/* prepare buffer */
Thread_OT_Cmd_Request_t* p_ot_req = THREAD_Get_OTCmdPayloadBuffer();
p_ot_req->ID = MSG_M4TOM0_OT_RANDOM_CRYPTO_MBDED_TLS_CONTEXT_GET;
p_ot_req->Size=0;
Ot_Cmd_Transfer();
p_ot_req = THREAD_Get_OTCmdRspPayloadBuffer();
return (mbedtls_ctr_drbg_context *)p_ot_req->Data[0];
}
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