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/**
******************************************************************************
* @file des_common.h
* @author MCD Application Team
* @version V3.0.0
* @date 05-June-2015
* @brief DES common functions and definitions
******************************************************************************
* @attention
*
* <h2><center>© COPYRIGHT 2015 STMicroelectronics</center></h2>
*
* Licensed under MCD-ST Image SW License Agreement V2, (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.st.com/software_license_agreement_liberty_v2
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __DES_COMMON_H__
#define __DES_COMMON_H__
#ifdef __cplusplus
extern "C"
{
#endif
/** @addtogroup DES
* @{
*/
/* Exported constants --------------------------------------------------------*/
#define CRL_DES_BLOCK 8 /*!< Number of bytes (uint8_t) necessary to store a DES block. */
#define CRL_DES_KEY 8 /*!< Number of bytes (uint8_t) necessary to store a DES key. */
/* Exported types ------------------------------------------------------------*/
typedef struct
{
uint32_t mContextId; /*!< Unique ID of this context. \b Not \b used in current implementation. */
SKflags_et mFlags; /*!< 32 bit mFlags, used to perform keyschedule */
const uint8_t *pmKey; /*!< Pointer to original Key buffer */
const uint8_t *pmIv; /*!< Pointer to original Initialization Vector buffer */
int32_t mIvSize; /*!< Size of the Initialization Vector in bytes */
uint32_t amIv[2]; /*!< Temporary result/IV */
uint32_t amExpKey[32]; /*!< Expanded DES key */
}
DESCBCctx_stt; /*!< Structure for the context of a DES operation */
/* Exported macro ------------------------------------------------------------*/
/* Exported functions ------------------------------------------------------- */
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /*__DES_COMMON_H__*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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