view Common/Drivers/STM32F4xx_HAL_Driver/Inc/stm32f4xx_hal_hash.h @ 250:822416168585 bm-2

Buelmann: new implementation for ceiling Since my first functional fix in the ceiling computation in commit ceecabfddb57, I noticed that the computation used a linear search, that became rather computational expensive after that commit. The simple question is: why not a binary search? So, this commit implements the binary search. But there is a long story attached to this. Comparing ceiling results from hwOS and this OSTC4 code were very different. Basically, the original OSTC4 algorithm computed the ceiling using the same GFlow to GFhigh slope, in such a way, that the ceiling was in sync with the presented deco stops, where the hwOS code presents a GFhigh based ceiling. This said, it is more logical when the OSTC4 and hwOS code give similar results. This new recursive algorithm gives very similar results for the ceiling compared to hwOS. To be complete here, the Buelmann ceiling is the depth to which you can ascend, so that the leading tissue reaches GFhigh. This also explains why the deepest deco stop is normally deeper than the ceiling (unless one dives with GF like 80/80). The code implemented here is rather straightforward recursion. Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
author Jan Mulder <jlmulder@xs4all.nl>
date Thu, 11 Apr 2019 17:48:48 +0200
parents c78bcbd5deda
children
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/**
  ******************************************************************************
  * @file    stm32f4xx_hal_hash.h
  * @author  MCD Application Team
  * @brief   Header file of HASH HAL module.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2017 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.
  *
  ******************************************************************************
  */

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32F4xx_HAL_HASH_H
#define __STM32F4xx_HAL_HASH_H

#ifdef __cplusplus
 extern "C" {
#endif

#if defined(STM32F415xx) || defined(STM32F417xx) || defined(STM32F437xx) || defined(STM32F439xx) || defined(STM32F479xx)

/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal_def.h"

/** @addtogroup STM32F4xx_HAL_Driver
  * @{
  */

/** @addtogroup HASH    
  * @brief HASH HAL module driver 
  *  @{
  */ 

/* Exported types ------------------------------------------------------------*/
/** @defgroup HASH_Exported_Types HASH Exported Types
  * @{
  */

/** @defgroup HASH_Exported_Types_Group1 HASH Configuration Structure definition
  * @{
  */

typedef struct
{
  uint32_t DataType;  /*!< 32-bit data, 16-bit data, 8-bit data or 1-bit string.
                           This parameter can be a value of @ref HASH_Data_Type */

  uint32_t KeySize;   /*!< The key size is used only in HMAC operation          */

  uint8_t* pKey;      /*!< The key is used only in HMAC operation               */
}HASH_InitTypeDef;

/** 
  * @}
  */

/** @defgroup HASH_Exported_Types_Group2 HASH State structures definition
  * @{
  */

typedef enum
{
  HAL_HASH_STATE_RESET     = 0x00U,  /*!< HASH not yet initialized or disabled */
  HAL_HASH_STATE_READY     = 0x01U,  /*!< HASH initialized and ready for use   */
  HAL_HASH_STATE_BUSY      = 0x02U,  /*!< HASH internal process is ongoing     */
  HAL_HASH_STATE_TIMEOUT   = 0x03U,  /*!< HASH timeout state                   */
  HAL_HASH_STATE_ERROR     = 0x04U   /*!< HASH error state                     */
}HAL_HASH_StateTypeDef; 

/** 
  * @}
  */
  
/** @defgroup HASH_Exported_Types_Group3 HASH phase structures definition
  * @{
  */
  
typedef enum
{
  HAL_HASH_PHASE_READY     = 0x01U,  /*!< HASH peripheral is ready for initialization */
  HAL_HASH_PHASE_PROCESS   = 0x02U  /*!< HASH peripheral is in processing phase      */
}HAL_HASH_PhaseTypeDef;

/** 
  * @}
  */
 
/** @defgroup HASH_Exported_Types_Group4 HASH Handle structures definition
  * @{
  */ 
  
typedef struct
{
      HASH_InitTypeDef           Init;              /*!< HASH required parameters       */

      uint8_t                    *pHashInBuffPtr;   /*!< Pointer to input buffer        */

      uint8_t                    *pHashOutBuffPtr;  /*!< Pointer to input buffer        */

     __IO uint32_t               HashBuffSize;      /*!< Size of buffer to be processed */

     __IO uint32_t               HashInCount;       /*!< Counter of inputed data        */

     __IO uint32_t               HashITCounter;     /*!< Counter of issued interrupts   */

      HAL_StatusTypeDef          Status;            /*!< HASH peripheral status         */

      HAL_HASH_PhaseTypeDef       Phase;             /*!< HASH peripheral phase          */

      DMA_HandleTypeDef          *hdmain;           /*!< HASH In DMA handle parameters  */

      HAL_LockTypeDef            Lock;              /*!< HASH locking object            */

     __IO HAL_HASH_StateTypeDef  State;             /*!< HASH peripheral state          */
} HASH_HandleTypeDef;

/** 
  * @}
  */
  

/**
  * @}
  */ 
  
/* Exported constants --------------------------------------------------------*/
/** @defgroup HASH_Exported_Constants HASH Exported Constants
  * @{
  */

/** @defgroup HASH_Exported_Constants_Group1 HASH Algorithm Selection
  * @{
  */
#define HASH_ALGOSELECTION_SHA1      0x00000000U         /*!< HASH function is SHA1   */
#define HASH_ALGOSELECTION_SHA224    HASH_CR_ALGO_1      /*!< HASH function is SHA224 */
#define HASH_ALGOSELECTION_SHA256    HASH_CR_ALGO        /*!< HASH function is SHA256 */
#define HASH_ALGOSELECTION_MD5       HASH_CR_ALGO_0      /*!< HASH function is MD5    */
/**
  * @}
  */

/** @defgroup HASH_Exported_Constants_Group2 HASH Algorithm Mode
  * @{
  */
#define HASH_ALGOMODE_HASH         0x00000000U           /*!< Algorithm is HASH */ 
#define HASH_ALGOMODE_HMAC         HASH_CR_MODE          /*!< Algorithm is HMAC */
/**
  * @}
  */

/** @defgroup HASH_Data_Type HASH Data Type
  * @{
  */
#define HASH_DATATYPE_32B          0x00000000U           /*!< 32-bit data. No swapping                     */
#define HASH_DATATYPE_16B          HASH_CR_DATATYPE_0    /*!< 16-bit data. Each half word is swapped       */
#define HASH_DATATYPE_8B           HASH_CR_DATATYPE_1    /*!< 8-bit data. All bytes are swapped            */
#define HASH_DATATYPE_1B           HASH_CR_DATATYPE      /*!< 1-bit data. In the word all bits are swapped */
/**
  * @}
  */

/** @defgroup HASH_Exported_Constants_Group4 HASH HMAC Long key 
  * @brief HASH HMAC Long key used only for HMAC mode
  * @{
  */
#define HASH_HMAC_KEYTYPE_SHORTKEY      0x00000000U      /*!< HMAC Key is <= 64 bytes */
#define HASH_HMAC_KEYTYPE_LONGKEY       HASH_CR_LKEY     /*!< HMAC Key is > 64 bytes  */
/**
  * @}
  */

/** @defgroup HASH_Exported_Constants_Group5 HASH Flags definition 
  * @{
  */
#define HASH_FLAG_DINIS            HASH_SR_DINIS         /*!< 16 locations are free in the DIN : A new block can be entered into the input buffer */
#define HASH_FLAG_DCIS             HASH_SR_DCIS          /*!< Digest calculation complete                                                         */
#define HASH_FLAG_DMAS             HASH_SR_DMAS          /*!< DMA interface is enabled (DMAE=1) or a transfer is ongoing                          */
#define HASH_FLAG_BUSY             HASH_SR_BUSY          /*!< The hash core is Busy : processing a block of data                                  */
#define HASH_FLAG_DINNE            HASH_CR_DINNE         /*!< DIN not empty : The input buffer contains at least one word of data                 */
/**
  * @}
  */

/** @defgroup HASH_Exported_Constants_Group6 HASH Interrupts definition 
  * @{
  */
#define HASH_IT_DINI               HASH_IMR_DINIE        /*!< A new block can be entered into the input buffer (DIN) */
#define HASH_IT_DCI                HASH_IMR_DCIE         /*!< Digest calculation complete                            */
/**
  * @}
  */

/**
  * @}
  */

/* Exported macro ------------------------------------------------------------*/
/** @defgroup HASH_Exported_Macros HASH Exported Macros
  * @{
  */
  
/** @brief Reset HASH handle state
  * @param  __HANDLE__ specifies the HASH handle.
  * @retval None
  */
#define __HAL_HASH_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = HAL_HASH_STATE_RESET)

/** @brief  Check whether the specified HASH flag is set or not.
  * @param  __FLAG__ specifies the flag to check.
  *         This parameter can be one of the following values:
  *            @arg HASH_FLAG_DINIS: A new block can be entered into the input buffer. 
  *            @arg HASH_FLAG_DCIS: Digest calculation complete
  *            @arg HASH_FLAG_DMAS: DMA interface is enabled (DMAE=1) or a transfer is ongoing
  *            @arg HASH_FLAG_BUSY: The hash core is Busy : processing a block of data
  *            @arg HASH_FLAG_DINNE: DIN not empty : The input buffer contains at least one word of data
  * @retval The new state of __FLAG__ (TRUE or FALSE).
  */
#define __HAL_HASH_GET_FLAG(__FLAG__) (((__FLAG__) > 8U) ? ((HASH->CR & (__FLAG__)) == (__FLAG__)) :\
                                                           ((HASH->SR & (__FLAG__)) == (__FLAG__)))

/**
  * @brief  Enable the multiple DMA mode. 
  *         This feature is available only in STM32F429x and STM32F439x devices.
  * @retval None
  */
#define __HAL_HASH_SET_MDMAT()          HASH->CR |= HASH_CR_MDMAT

/**
  * @brief  Disable the multiple DMA mode.
  * @retval None
  */
#define __HAL_HASH_RESET_MDMAT()        HASH->CR &= (uint32_t)(~HASH_CR_MDMAT)

/**
  * @brief  Start the digest computation
  * @retval None
  */
#define __HAL_HASH_START_DIGEST()       HASH->STR |= HASH_STR_DCAL

/**
  * @brief Set the number of valid bits in last word written in Data register
  * @param  SIZE size in byte of last data written in Data register.
  * @retval None
*/
#define __HAL_HASH_SET_NBVALIDBITS(SIZE) do{HASH->STR &= ~(HASH_STR_NBLW);\
                                            HASH->STR |= 8U * ((SIZE) % 4U);\
                                           }while(0)

/**
  * @}
  */ 

/* Include HASH HAL Extension module */
#include "stm32f4xx_hal_hash_ex.h"
/* Exported functions --------------------------------------------------------*/

/** @defgroup HASH_Exported_Functions HASH Exported Functions
  * @{
  */

/** @addtogroup HASH_Exported_Functions_Group1
  * @{
  */  
HAL_StatusTypeDef HAL_HASH_Init(HASH_HandleTypeDef *hhash);
HAL_StatusTypeDef HAL_HASH_DeInit(HASH_HandleTypeDef *hhash);
/**
  * @}
  */ 

/** @addtogroup HASH_Exported_Functions_Group2
  * @{
  */  
HAL_StatusTypeDef HAL_HASH_SHA1_Start(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t* pOutBuffer, uint32_t Timeout);
HAL_StatusTypeDef HAL_HASH_MD5_Start(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t* pOutBuffer, uint32_t Timeout);
HAL_StatusTypeDef HAL_HASH_MD5_Accumulate(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size);
HAL_StatusTypeDef HAL_HASH_SHA1_Accumulate(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size);
/**
  * @}
  */ 
  
/** @addtogroup HASH_Exported_Functions_Group3
  * @{
  */  
HAL_StatusTypeDef HAL_HMAC_SHA1_Start(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t* pOutBuffer, uint32_t Timeout);
HAL_StatusTypeDef HAL_HMAC_MD5_Start(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t* pOutBuffer, uint32_t Timeout);
/**
  * @}
  */ 

/** @addtogroup HASH_Exported_Functions_Group4
  * @{
  */  
HAL_StatusTypeDef HAL_HASH_SHA1_Start_IT(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t* pOutBuffer);
HAL_StatusTypeDef HAL_HASH_MD5_Start_IT(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size, uint8_t* pOutBuffer);
/**
  * @}
  */ 

/** @addtogroup HASH_Exported_Functions_Group5
  * @{
  */    
HAL_StatusTypeDef HAL_HASH_SHA1_Start_DMA(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size);
HAL_StatusTypeDef HAL_HASH_SHA1_Finish(HASH_HandleTypeDef *hhash, uint8_t* pOutBuffer, uint32_t Timeout);
HAL_StatusTypeDef HAL_HASH_MD5_Start_DMA(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size);
HAL_StatusTypeDef HAL_HASH_MD5_Finish(HASH_HandleTypeDef *hhash, uint8_t* pOutBuffer, uint32_t Timeout);
/**
  * @}
  */ 

/** @addtogroup HASH_Exported_Functions_Group6
  * @{
  */  
HAL_StatusTypeDef HAL_HMAC_SHA1_Start_DMA(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size);
HAL_StatusTypeDef HAL_HMAC_MD5_Start_DMA(HASH_HandleTypeDef *hhash, uint8_t *pInBuffer, uint32_t Size);
/**
  * @}
  */ 

/** @addtogroup HASH_Exported_Functions_Group7
  * @{
  */  
void HAL_HASH_IRQHandler(HASH_HandleTypeDef *hhash);
/**
  * @}
  */ 

/** @addtogroup HASH_Exported_Functions_Group8
  * @{
  */
HAL_HASH_StateTypeDef HAL_HASH_GetState(HASH_HandleTypeDef *hhash);
void HAL_HASH_MspInit(HASH_HandleTypeDef *hhash);
void HAL_HASH_MspDeInit(HASH_HandleTypeDef *hhash);
void HAL_HASH_InCpltCallback(HASH_HandleTypeDef *hhash);
void HAL_HASH_DgstCpltCallback(HASH_HandleTypeDef *hhash);
void HAL_HASH_ErrorCallback(HASH_HandleTypeDef *hhash);
/**
  * @}
  */ 
  
 /**
  * @}
  */ 
 
 /* Private types -------------------------------------------------------------*/
/** @defgroup HASH_Private_Types HASH Private Types
  * @{
  */

/**
  * @}
  */ 

/* Private variables ---------------------------------------------------------*/
/** @defgroup HASH_Private_Variables HASH Private Variables
  * @{
  */

/**
  * @}
  */ 

/* Private constants ---------------------------------------------------------*/
/** @defgroup HASH_Private_Constants HASH Private Constants
  * @{
  */

/**
  * @}
  */ 

/* Private macros ------------------------------------------------------------*/
/** @defgroup HASH_Private_Macros HASH Private Macros
  * @{
  */
#define IS_HASH_ALGOSELECTION(__ALGOSELECTION__) (((__ALGOSELECTION__) == HASH_ALGOSELECTION_SHA1)   || \
                                                  ((__ALGOSELECTION__) == HASH_ALGOSELECTION_SHA224) || \
                                                  ((__ALGOSELECTION__) == HASH_ALGOSELECTION_SHA256) || \
                                                  ((__ALGOSELECTION__) == HASH_ALGOSELECTION_MD5))


#define IS_HASH_ALGOMODE(__ALGOMODE__) (((__ALGOMODE__) == HASH_ALGOMODE_HASH) || \
                                        ((__ALGOMODE__) == HASH_ALGOMODE_HMAC))


#define IS_HASH_DATATYPE(__DATATYPE__) (((__DATATYPE__) == HASH_DATATYPE_32B)|| \
                                        ((__DATATYPE__) == HASH_DATATYPE_16B)|| \
                                        ((__DATATYPE__) == HASH_DATATYPE_8B) || \
                                        ((__DATATYPE__) == HASH_DATATYPE_1B))


#define IS_HASH_HMAC_KEYTYPE(__KEYTYPE__) (((__KEYTYPE__) == HASH_HMAC_KEYTYPE_SHORTKEY) || \
                                           ((__KEYTYPE__) == HASH_HMAC_KEYTYPE_LONGKEY))

#define IS_HASH_SHA1_BUFFER_SIZE(__SIZE__) ((((__SIZE__)%4U) != 0U)? 0U: 1U)

/**
  * @}
  */ 

/* Private functions ---------------------------------------------------------*/
/** @defgroup HASH_Private_Functions HASH Private Functions
  * @{
  */

/**
  * @}
  */
 
#endif /* STM32F415xx || STM32F417xx || STM32F437xx || STM32F439xx || STM32F479xx */
/**
  * @}
  */ 

/**
  * @}
  */
  
#ifdef __cplusplus
}
#endif


#endif /* __STM32F4xx_HAL_HASH_H */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/