工程创建参考：
https://shequ.stmicroelectronics ... p;extra=#pid2657071





生成代码

定义几个字符串，数组等，模拟文件数据

    /* USER CODE BEGIN PV */
    char *SourceFile = "STMicroelectronics Community";
    char EncryptFile[128] = {0};
    char DecryptFile[128] = {0};
    /* USER CODE END PV */

main.c中添加程序

    /* USER CODE BEGIN BSP */

    /* -- Sample board code to send message over COM1 port ---- */
    printf("Welcome to STM32 world !\n\r");

    /* -- Sample board code to switch on leds ---- */
    BSP_LED_On(LED_GREEN);

    printf("The source file is: %s !\n\r", SourceFile);
    HAL_CRYP_Encrypt(&hcryp, SourceFile, strlen(SourceFile), EncryptFile, 1000);
    printf("The encrypted file is: %s !\n\r", EncryptFile);

    HAL_CRYP_Decrypt(&hcryp, EncryptFile, strlen(SourceFile), DecryptFile, 1000);
    printf("The Decrypted file is: %s !\n\r", DecryptFile);
    /* USER CODE END BSP */

编译运行，看效果



反正加密后的我是看不懂，哈哈哈哈