X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=example%2Fstm32f4%2FSTM32F4xx_StdPeriph_Driver%2Fsrc%2Fstm32f4xx_cryp_tdes.c;fp=example%2Fstm32f4%2FSTM32F4xx_StdPeriph_Driver%2Fsrc%2Fstm32f4xx_cryp_tdes.c;h=f360907b42f3afadc586b591622f95c250c6f661;hb=428744bbe366de64da6944df9cde447b55a2c14d;hp=0000000000000000000000000000000000000000;hpb=c2fa32ce2bbf133f0eec08ae589fd13d635e3ae4;p=fw%2Fstlink diff --git a/example/stm32f4/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_cryp_tdes.c b/example/stm32f4/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_cryp_tdes.c new file mode 100644 index 0000000..f360907 --- /dev/null +++ b/example/stm32f4/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_cryp_tdes.c @@ -0,0 +1,308 @@ +/** + ****************************************************************************** + * @file stm32f4xx_cryp_tdes.c + * @author MCD Application Team + * @version V1.0.0RC1 + * @date 25-August-2011 + * @brief This file provides high level functions to encrypt and decrypt an + * input message using TDES in ECB/CBC modes . + * It uses the stm32f4xx_cryp.c/.h drivers to access the STM32F4xx CRYP + * peripheral. + * + * @verbatim + * + * =================================================================== + * How to use this driver + * =================================================================== + * 1. Enable The CRYP controller clock using + * RCC_AHB2PeriphClockCmd(RCC_AHB2Periph_CRYP, ENABLE); function. + * + * 2. Encrypt and decrypt using TDES in ECB Mode using CRYP_TDES_ECB() + * function. + * + * 3. Encrypt and decrypt using TDES in CBC Mode using CRYP_TDES_CBC() + * function. + * + * @endverbatim + * + ****************************************************************************** + * @attention + * + * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS + * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE + * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY + * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING + * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE + * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. + * + *

© COPYRIGHT 2011 STMicroelectronics

+ ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f4xx_cryp.h" + + +/** @addtogroup STM32F4xx_StdPeriph_Driver + * @{ + */ + +/** @defgroup CRYP + * @brief CRYP driver modules + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +#define TDESBUSY_TIMEOUT ((uint32_t) 0x00010000) + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ + + +/** @defgroup CRYP_Private_Functions + * @{ + */ + +/** @defgroup CRYP_Group7 High Level TDES functions + * @brief High Level TDES functions + * +@verbatim + =============================================================================== + High Level TDES functions + =============================================================================== + + +@endverbatim + * @{ + */ + +/** + * @brief Encrypt and decrypt using TDES in ECB Mode + * @param Mode: encryption or decryption Mode. + * This parameter can be one of the following values: + * @arg MODE_ENCRYPT: Encryption + * @arg MODE_DECRYPT: Decryption + * @param Key: Key used for TDES algorithm. + * @param Ilength: length of the Input buffer, must be a multiple of 8. + * @param Input: pointer to the Input buffer. + * @param Output: pointer to the returned buffer. + * @retval An ErrorStatus enumeration value: + * - SUCCESS: Operation done + * - ERROR: Operation failed + */ +ErrorStatus CRYP_TDES_ECB(uint8_t Mode, uint8_t Key[24], uint8_t *Input, + uint32_t Ilength, uint8_t *Output) +{ + CRYP_InitTypeDef TDES_CRYP_InitStructure; + CRYP_KeyInitTypeDef TDES_CRYP_KeyInitStructure; + __IO uint32_t counter = 0; + uint32_t busystatus = 0; + ErrorStatus status = SUCCESS; + uint32_t keyaddr = (uint32_t)Key; + uint32_t inputaddr = (uint32_t)Input; + uint32_t outputaddr = (uint32_t)Output; + uint32_t i = 0; + + /* Crypto structures initialisation*/ + CRYP_KeyStructInit(&TDES_CRYP_KeyInitStructure); + + /* Crypto Init for Encryption process */ + if(Mode == MODE_ENCRYPT) /* TDES encryption */ + { + TDES_CRYP_InitStructure.CRYP_AlgoDir = CRYP_AlgoDir_Encrypt; + } + else /*if(Mode == MODE_DECRYPT)*/ /* TDES decryption */ + { + TDES_CRYP_InitStructure.CRYP_AlgoDir = CRYP_AlgoDir_Decrypt; + } + + TDES_CRYP_InitStructure.CRYP_AlgoMode = CRYP_AlgoMode_TDES_ECB; + TDES_CRYP_InitStructure.CRYP_DataType = CRYP_DataType_8b; + CRYP_Init(&TDES_CRYP_InitStructure); + + /* Key Initialisation */ + TDES_CRYP_KeyInitStructure.CRYP_Key1Left = __REV(*(uint32_t*)(keyaddr)); + keyaddr+=4; + TDES_CRYP_KeyInitStructure.CRYP_Key1Right= __REV(*(uint32_t*)(keyaddr)); + keyaddr+=4; + TDES_CRYP_KeyInitStructure.CRYP_Key2Left = __REV(*(uint32_t*)(keyaddr)); + keyaddr+=4; + TDES_CRYP_KeyInitStructure.CRYP_Key2Right= __REV(*(uint32_t*)(keyaddr)); + keyaddr+=4; + TDES_CRYP_KeyInitStructure.CRYP_Key3Left = __REV(*(uint32_t*)(keyaddr)); + keyaddr+=4; + TDES_CRYP_KeyInitStructure.CRYP_Key3Right= __REV(*(uint32_t*)(keyaddr)); + CRYP_KeyInit(& TDES_CRYP_KeyInitStructure); + + /* Flush IN/OUT FIFO */ + CRYP_FIFOFlush(); + + /* Enable Crypto processor */ + CRYP_Cmd(ENABLE); + + for(i=0; ((i