demo工程暂存 优化菜单界面UI和功能
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179
MCU/components/drivers/peripheral/Src/driver_aes.c
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179
MCU/components/drivers/peripheral/Src/driver_aes.c
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/*
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******************************************************************************
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* @file driver_aes.c
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* @author FreqChip Firmware Team
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* @version V1.0.0
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* @date 2022
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* @brief IIR module driver.
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* This file provides firmware functions to manage the
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* SEC AES peripheral
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2022 FreqChip.
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* All rights reserved.
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******************************************************************************
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*/
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#include "fr30xx.h"
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/*********************************************************************
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* @fn aes_config
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*
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* @brief config the aes mode and Endia.
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*
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* @param fe_Mode : select AES mode.
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* @param fe_Endian: select AES Endian.
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*/
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void aes_config(enum_AES_MODE_t fe_Mode, enum_ENDIAN_t fe_Endian)
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{
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/* AES Endian */
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SEC_AES->AES_CTRL.Bits.ENDIAN_SEL = fe_Endian;
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/* AES Mode */
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if (fe_Mode >= AES_CBC_128){
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SEC_AES->AES_CTRL.Bits.CBC = AES_CBC_MODE_ENABLE;
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SEC_AES->AES_CTRL.Bits.KEY_LEN = fe_Mode - AES_CBC_128;
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}
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else{
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SEC_AES->AES_CTRL.Bits.CBC = AES_CBC_MODE_DISABLE;
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SEC_AES->AES_CTRL.Bits.KEY_LEN = fe_Mode;
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}
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}
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/*********************************************************************
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* @fn aes_set_encrypt_key
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*
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* @brief Set AES encryption key.
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*
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* @param key : points to the AES key.
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*/
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void aes_set_encrypt_key(uint8_t *key)
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{
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uint32_t *lp_Key = (uint32_t *)key;
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SEC_AES->KEY_0 = lp_Key[0];
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SEC_AES->KEY_1 = lp_Key[1];
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SEC_AES->KEY_2 = lp_Key[2];
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SEC_AES->KEY_3 = lp_Key[3];
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switch(SEC_AES->AES_CTRL.Bits.KEY_LEN)
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{
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case AES_ECB_192:{
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SEC_AES->KEY_4 = lp_Key[4];
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SEC_AES->KEY_5 = lp_Key[5];
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}break;
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case AES_ECB_256:{
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SEC_AES->KEY_4 = lp_Key[4];
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SEC_AES->KEY_5 = lp_Key[5];
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SEC_AES->KEY_6 = lp_Key[6];
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SEC_AES->KEY_7 = lp_Key[7];
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}break;
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default:break;
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}
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}
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/*********************************************************************
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* @fn aes_set_encrypt_iv
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*
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* @brief Set IV for the encrypt/decrypt.
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*
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* @param key : points to the AES key.
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*/
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void aes_set_encrypt_iv(uint8_t *iv)
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{
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uint32_t *lp_IV = (uint32_t *)iv;
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SEC_AES->IV_0 = lp_IV[0];
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SEC_AES->IV_1 = lp_IV[1];
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SEC_AES->IV_2 = lp_IV[2];
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SEC_AES->IV_3 = lp_IV[3];
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}
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/*********************************************************************
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* @fn aes_encrypt
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*
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* @brief aes encrypt.
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*
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* @param fp_Data_In: the pointer of data which is to encrypt.
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* @param fu32_Size: encrypt size.
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* @param fp_Data_Out: the pointer of data which saves the encryption data.
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*/
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void aes_encrypt(uint8_t *fp_Data_In, uint32_t fu32_Size, uint8_t *fp_Data_Out)
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{
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uint32_t *DataIN = (uint32_t *)fp_Data_In;
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uint32_t *DataOUT = (uint32_t *)fp_Data_Out;
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uint32_t InIndex = 0;
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uint32_t lu32_size;
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lu32_size = fu32_Size/16;
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if (fu32_Size % 16)
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lu32_size++;
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/* Block 16 byte */
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while(InIndex < lu32_size)
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{
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SEC_AES->DATAIN_0 = *DataIN++;
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SEC_AES->DATAIN_1 = *DataIN++;
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SEC_AES->DATAIN_2 = *DataIN++;
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SEC_AES->DATAIN_3 = *DataIN++;
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__AES_SET_OPCODE(AES_OPCODE_ENCRYPT);
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__AES_WORK_START();
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while(__AES_IS_BUSY());
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*DataOUT++ = SEC_AES->DATAOUT_0;
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*DataOUT++ = SEC_AES->DATAOUT_1;
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*DataOUT++ = SEC_AES->DATAOUT_2;
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*DataOUT++ = SEC_AES->DATAOUT_3;
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InIndex++;
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}
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}
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/*********************************************************************
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* @fn aes_decrypt
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*
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* @brief aes decrypt
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*
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* @param fp_Data_In: the pointer of data which is to decrypt.
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* @param fu32_Size: decrypt size.
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* @param fp_Data_Out: the pointer of data which saves the decryption data.
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*/
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void aes_decrypt(uint8_t *fp_Data_In, uint32_t fu32_Size, uint8_t *fp_Data_Out)
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{
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uint32_t *DataIN = (uint32_t *)fp_Data_In;
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uint32_t *DataOUT = (uint32_t *)fp_Data_Out;
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uint32_t InIndex = 0;
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uint32_t lu32_size;
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lu32_size = fu32_Size/16;
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if (fu32_Size % 16)
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lu32_size++;
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while (InIndex < lu32_size)
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{
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SEC_AES->DATAIN_0 = *DataIN++;
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SEC_AES->DATAIN_1 = *DataIN++;
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SEC_AES->DATAIN_2 = *DataIN++;
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SEC_AES->DATAIN_3 = *DataIN++;
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__AES_SET_OPCODE(AES_OPCODE_KEY_EXPAND);
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__AES_WORK_START();
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while(__AES_IS_BUSY());
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__AES_SET_OPCODE(AES_OPCODE_DECRYPT);
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__AES_WORK_START();
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while(__AES_IS_BUSY());
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*DataOUT++ = SEC_AES->DATAOUT_0;
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*DataOUT++ = SEC_AES->DATAOUT_1;
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*DataOUT++ = SEC_AES->DATAOUT_2;
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*DataOUT++ = SEC_AES->DATAOUT_3;
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InIndex++;
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}
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}
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