Diff: libs/spirit1/SPIRIT1_Library/Src/SPIRIT_Aes.c

Revision:

34:edda6a7238ec

Parent:

33:c226804be492

Child:

35:f3f444c379d0

--- a/libs/spirit1/SPIRIT1_Library/Src/SPIRIT_Aes.c	Mon Nov 21 13:26:17 2016 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,319 +0,0 @@
-/**
-  ******************************************************************************
- * @file    SPIRIT_Aes.c
-  * @author  VMA division - AMS
-  * @version 3.2.2
-  * @date    08-July-2015
- * @brief   Configuration and management of SPIRIT AES Engine.
- *
-  * @attention
- *
-  * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
- *
-  * Redistribution and use in source and binary forms, with or without modification,
-  * are permitted provided that the following conditions are met:
-  *   1. Redistributions of source code must retain the above copyright notice,
-  *      this list of conditions and the following disclaimer.
-  *   2. Redistributions in binary form must reproduce the above copyright notice,
-  *      this list of conditions and the following disclaimer in the documentation
-  *      and/or other materials provided with the distribution.
-  *   3. Neither the name of STMicroelectronics nor the names of its contributors
-  *      may be used to endorse or promote products derived from this software
-  *      without specific prior written permission.
-  *
-  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-  *
-  ******************************************************************************
- */
-
-
-/* Includes ------------------------------------------------------------------*/
-#include "SPIRIT_Aes.h"
-#include "MCU_Interface.h"
-
-
-/**
- * @addtogroup SPIRIT_Libraries
- * @{
- */
-
-
-/**
- * @addtogroup SPIRIT_Aes
- * @{
- */
-
-
-/**
- * @defgroup Aes_Private_TypesDefinitions       AES Private Types Definitions
- * @{
- */
-
-/**
- * @}
- */
-
-
-/**
- * @defgroup Aes_Private_Defines                AES Private Defines
- * @{
- */
-
-/**
- * @}
- */
-
-
-/**
- * @defgroup Aes_Private_Macros                 AES Private Macros
- * @{
- */
-
-/**
- * @}
- */
-
-
-/**
- * @defgroup Aes_Private_Variables              AES Private Variables
- * @{
- */
-
-/**
- * @}
- */
-
-
-/**
- * @defgroup Aes_Private_FunctionPrototypes     AES Private Function Prototypes
- * @{
- */
-
-/**
- * @}
- */
-
-
-/**
- * @defgroup Aes_Private_Functions              AES Private Functions
- * @{
- */
-
-
-/**
- * @brief  Enables or Disables the AES engine.
- * @param  xNewState new state for AES engine.
- *         This parameter can be: S_ENABLE or S_DISABLE.
- * @retval None
- */
-void SpiritAesMode(SpiritFunctionalState xNewState)
-{
-  uint8_t tempRegValue = 0x00;
-
-  /* Check the parameters */
-  s_assert_param(IS_SPIRIT_FUNCTIONAL_STATE(xNewState));
-
-  /* Modifies the register value */
-  g_xStatus = SpiritSpiReadRegisters(ANA_FUNC_CONF0_BASE, 1, &tempRegValue);
-  if(xNewState == S_ENABLE)
-  {
-    tempRegValue |= AES_MASK;
-  }
-  else
-  {
-    tempRegValue &= ~AES_MASK;
-  }
-
-  /* Writes the ANA_FUNC_CONF0 register to enable or disable the AES engine */
-  g_xStatus = SpiritSpiWriteRegisters(ANA_FUNC_CONF0_BASE, 1, &tempRegValue);
-
-}
-
-
-/**
- * @brief  Writes the data to encrypt or decrypt, or the encryption key for the 
- *         derive decryption key operation into the AES_DATA_IN registers.
- * @param  pcBufferDataIn pointer to the user data buffer. The first byte of the array
- * 	   shall be the MSB byte and it will be put in the AES_DATA_IN[0] register, while
- * 	   the last one shall be the LSB and it will be put in the AES_DATA_IN[cDataLength-1]
- * 	   register. If data to write are less than 16 bytes the remaining AES_DATA_IN registers
- * 	   will be filled with bytes equal to 0. This parameter is an uint8_t*.
- * @param  cDataLength length of data in bytes.
- *         This parameter is an uint8_t.
- * @retval None
- */
-void SpiritAesWriteDataIn(uint8_t* pcBufferDataIn, uint8_t cDataLength)
-{
-  uint8_t i, dataInArray[16];
-
-  /* Verifies that there are no more than 16 bytes */
-  (cDataLength>16) ? (cDataLength=16) : cDataLength;
-
-  /* Fill the dataInArray with the data buffer, using padding */
-  for(i=0;i<16;i++)
-  {
-    (i<(16 - cDataLength)) ? (dataInArray[i]=0):(dataInArray[i]=pcBufferDataIn[15-i]);
-
-  }
-
-  /* Writes the AES_DATA_IN registers */
-  g_xStatus = SpiritSpiWriteRegisters(AES_DATA_IN_15_BASE, 16, dataInArray);
-
-}
-
-
-/**
- * @brief  Returns the encrypted or decrypted data or the decription key from the AES_DATA_OUT register.
- * @param  pcBufferDataOut pointer to the user data buffer. The AES_DATA_OUT[0]
- *         register value will be put as first element of the buffer (MSB), while the
- *         AES_DAT_OUT[cDataLength-1] register value will be put as last element of the buffer (LSB).
- * 	   This parameter is a uint8_t*.
- * @param  cDataLength length of data to read in bytes.
- *         This parameter is a uint8_t.
- * @retval None
- */
-void SpiritAesReadDataOut(uint8_t* pcBufferDataOut, uint8_t cDataLength)
-{
-  uint8_t address, dataOutArray[16];
-
-  /* Verifies that there are no more than 16 bytes */
-  (cDataLength>16) ? (cDataLength=16) : cDataLength;
-
-  /* Evaluates the address of AES_DATA_OUT from which start to read */
-  address = AES_DATA_OUT_15_BASE+16-cDataLength;
-
-  /* Reads the exact number of AES_DATA_OUT registers */
-  g_xStatus = (SpiritSpiReadRegisters(address, cDataLength, dataOutArray));
-
-  /* Copy in the user buffer the read values changing the order */
-  for(int i = (cDataLength-1); i>=0; i--)
-  {
-    *pcBufferDataOut = dataOutArray[i];
-    pcBufferDataOut++;
-  }
-
-}
-
-
-/**
- * @brief  Writes the encryption key into the AES_KEY_IN register.
- * @param  pcKey pointer to the buffer of 4 words containing the AES key.
- *         The first byte of the buffer shall be the most significant byte AES_KEY_0 of the AES key.
- *         The last byte of the buffer shall be the less significant byte AES_KEY_15 of the AES key.
- * 	   This parameter is an uint8_t*.
- * @retval None
- */
-void SpiritAesWriteKey(uint8_t* pcKey)
-{
-  uint8_t pcTempKey[16]; 
-  for (uint8_t i = 0; i < 16; i++)
-  {
-    pcTempKey[15-i] = pcKey[i];
-  }
-  
-  /* Writes the AES_DATA_IN registers */
-  g_xStatus = SpiritSpiWriteRegisters(AES_KEY_IN_15_BASE, 16, pcTempKey);
-
-}
-
-/**
- * @brief  Returns the encryption/decryption key from the AES_KEY_IN register.
- * @param  pcKey  pointer to the buffer of 4 words (16 bytes) containing the AES key.
- *         The first byte of the buffer shall be the most significant byte AES_KEY_0 of the AES key.
- *         The last byte of the buffer shall be the less significant byte AES_KEY_15 of the AES key.
- *         This parameter is an uint8_t*.
- * @retval None
- */
-void SpiritAesReadKey(uint8_t* pcKey)
-{
-  uint8_t pcTempKey[16];
-
-  /* Reads the AES_DATA_IN registers */
-  g_xStatus = SpiritSpiReadRegisters(AES_KEY_IN_15_BASE, 16, pcTempKey);
-
-
-  for (uint8_t i = 0; i < 16; i++)
-    pcKey[i] = pcTempKey[15-i];
-
-}
-
-
-
-/**
- * @brief  Derives the decryption key from a given encryption key.
- * @param  None.
- * @retval None.
- */
-void SpiritAesDeriveDecKeyFromEnc(void)
-{
-  /* Sends the COMMAND_AES_KEY command */
-  g_xStatus = SpiritSpiCommandStrobes(COMMAND_AES_KEY);
-
-}
-
-
-/**
- * @brief  Executes the encryption operation.
- * @param  None.
- * @retval None.
- */
-void SpiritAesExecuteEncryption(void)
-{
-  /* Sends the COMMAND_AES_ENC command */
-  g_xStatus = SpiritSpiCommandStrobes(COMMAND_AES_ENC);
-
-}
-
-
-/**
- * @brief  Executes the decryption operation.
- * @param  None.
- * @retval None.
- */
-void SpiritAesExecuteDecryption(void)
-{
-  /* Sends the COMMAND_AES_DEC command */
-  g_xStatus = SpiritSpiCommandStrobes(COMMAND_AES_DEC);
-
-}
-
-
-/**
- * @brief  Executes the key derivation and the decryption operation.
- * @param  None.
- * @retval None.
- */
-void SpiritAesDeriveDecKeyExecuteDec(void)
-{
-  /* Sends the COMMAND_AES_KEY_DEC command */
-  g_xStatus = SpiritSpiCommandStrobes(COMMAND_AES_KEY_DEC);
-
-}
-
-
-/**
- * @}
- */
-
-
-/**
- * @}
- */
-
-
-/**
- * @}
- */
-
-
-
-/******************* (C) COPYRIGHT 2015 STMicroelectronics *****END OF FILE****/