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/**
******************************************************************************
* @file CRYP/CRYP_TDESmodes/Src/main.c
* @author MCD Application Team
* @brief This sample code shows how to use the STM32F4xx CRYP HAL API
* to encrypt and decrypt data using TDES in ECB and CBC Algorithm.
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/** @addtogroup STM32F4xx_HAL_Examples
* @{
*/
/** @addtogroup CRYP_Example
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* CRYP handler declaration */
static CRYP_HandleTypeDef hcryp;
static CRYP_ConfigTypeDef Conf;
/* Triple Key */
uint32_t TDESKey[6] = { 0x01234567,0x89ABCDEF,
0x23456789,0xABCDEF01,
0x456789AB,0xCDEF0123};
/*Initialization Vector*/
uint32_t InitVector[2] = {0xF69F2445 ,0xDF4F9B17};
/* Plaintext */
uint32_t Plaintext[8] = { 0x6BC1BEE2, 0x2E409F96, 0xE93D7E11, 0x7393172A,
0xAE2D8A57, 0x1E03AC9C, 0x9EB76FAC, 0x45AF8E51};
/* Expected ECB Ciphertext */
uint32_t Ciphertext_ECB[8] = {0x714772F3, 0x39841D34,0x267FCC4B,0xD2949CC3,
0xEE11C22A, 0x576A3038, 0x76183F99, 0xC0B6DE87};
/* Expected CBC Ciphertext */
uint32_t Ciphertext_CBC[8] = {0x2079C3D5, 0x3AA763E1, 0x93B79E25 , 0x69AB5262,
0x51657048, 0x1F25B50F , 0x73C0BDA8 , 0x5C8E0DA7};
/* Used for storing Encrypted text */
uint32_t Encryptedtext[8]={0};
/* Used for storing Decrypted text */
uint32_t Decryptedtext[8]={0};
/* Private function prototypes -----------------------------------------------*/
static void SystemClock_Config(void);
static void Error_Handler(void);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* STM32F4xx HAL library initialization:
- Configure the Flash prefetch, instruction and Data caches
- Configure the Systick to generate an interrupt each 1 msec
- Set NVIC Group Priority to 4
- Global MSP (MCU Support Package) initialization
*/
HAL_Init();
/* Configure the system clock to 180 MHz */
SystemClock_Config();
/* Configure LED1 and LED3 */
BSP_LED_Init(LED1);
BSP_LED_Init(LED3);
/*## Set the CRYP parameters and initialize the IP ######################################*/
hcryp.Instance = CRYP;
hcryp.Init.DataType = CRYP_DATATYPE_32B;
hcryp.Init.pKey = TDESKey;
hcryp.Init.Algorithm = CRYP_TDES_ECB;
hcryp.Init.KeyIVConfigSkip = CRYP_KEYIVCONFIG_ALWAYS;
/* Configure the CRYP */
HAL_CRYP_Init(&hcryp);
/*##-1- TDES ECB Encryption #######################################*/
/* Encryption, result in Encryptedtext buffer */
HAL_CRYP_Encrypt(&hcryp, Plaintext, 8, Encryptedtext, TIMEOUT_VALUE);
if(memcmp(Encryptedtext, Ciphertext_ECB, 32) != 0)
{
/* Not expected result, wrong on Encryptedtext buffer: Turn LED3 on */
Error_Handler();
}
/*##-2- TDES CBC Encryption #######################################*/
/* Get current CRYP parameters */
HAL_CRYP_GetConfig(&hcryp, &Conf);
/* Set new parameters and configure the CRYP */
Conf.pInitVect = InitVector;
Conf.Algorithm = CRYP_TDES_CBC;
HAL_CRYP_SetConfig(&hcryp, &Conf);
/* Encryption, result in Encryptedtext buffer */
HAL_CRYP_Encrypt(&hcryp, Plaintext, 8, Encryptedtext, TIMEOUT_VALUE);
if(memcmp(Encryptedtext, Ciphertext_CBC, 32) != 0)
{ /* Not expected result, wrong on Encryptedtext buffer: Turn LED3 on */
Error_Handler();
}
/*##-3- TDES ECB Decryption #######################################*/
/* Set new parameters and configure the CRYP */
Conf.Algorithm = CRYP_TDES_ECB;
HAL_CRYP_SetConfig(&hcryp, &Conf);
/* Decryption, result in Decryptedtext buffer */
HAL_CRYP_Decrypt(&hcryp, Ciphertext_ECB , 8, Decryptedtext, TIMEOUT_VALUE);
if(memcmp(Decryptedtext, Plaintext, 32) != 0)
{
/* Not expected result, wrong on Decryptedtext buffer: Turn LED3 on */
Error_Handler();
}
/*##-4- TDES CBC Decryption #######################################*/
/* Set new parameters and configure the CRYP */
Conf.Algorithm = CRYP_TDES_CBC;
HAL_CRYP_SetConfig(&hcryp, &Conf);
/* Decryption, result in Decryptedtext buffer */
HAL_CRYP_Decrypt(&hcryp, Ciphertext_CBC, 8, Decryptedtext, TIMEOUT_VALUE);
if(memcmp(Decryptedtext, Plaintext, 32) != 0)
{ /* Not expected result, wrong on Decryptedtext buffer: Turn LED3 on */
Error_Handler();
}
else
{
/* Right Encryptedtext & Decryptedtext buffer : Turn LED1 on */
BSP_LED_On(LED1);
}
/* Infinite loop */
while (1)
{
}
}
/**
* @brief System Clock Configuration
* The system Clock is configured as follow :
* System Clock source = PLL (HSE)
* SYSCLK(Hz) = 180000000
* HCLK(Hz) = 180000000
* AHB Prescaler = 1
* APB1 Prescaler = 4
* APB2 Prescaler = 2
* HSE Frequency(Hz) = 25000000
* PLL_M = 25
* PLL_N = 360
* PLL_P = 2
* PLL_Q = 7
* VDD(V) = 3.3
* Main regulator output voltage = Scale1 mode
* Flash Latency(WS) = 5
* @param None
* @retval None
*/
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
/* Enable Power Control clock */
__HAL_RCC_PWR_CLK_ENABLE();
/* The voltage scaling allows optimizing the power consumption when the device is
clocked below the maximum system frequency, to update the voltage scaling value
regarding system frequency refer to product datasheet. */
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/* Enable HSE Oscillator and activate PLL with HSE as source */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 25;
RCC_OscInitStruct.PLL.PLLN = 360;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
HAL_RCC_OscConfig(&RCC_OscInitStruct);
/* Activate the Over-Drive mode */
HAL_PWREx_EnableOverDrive();
/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
clocks dividers */
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
}
/**
* @brief This function is executed in case of error occurrence.
* @param None
* @retval None
*/
static void Error_Handler(void)
{
/* Turn LED3 on */
BSP_LED_On(LED3);
while (1)
{
}
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/**
* @}
*/
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