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/**
******************************************************************************
* @file aes_cmac.h
* @author MCD Application Team
* @brief AES in CMAC Mode
******************************************************************************
* @attention
*
* <h2><center>© Copyright (c) 2015 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under Image license SLA0044,
* 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/SLA0044
*
*****************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __CRL_AES_CMAC_H__
#define __CRL_AES_CMAC_H__
#ifdef __cplusplus
extern "C"
{
#endif
/** @ingroup AESCMAC
* @{
*/
/* 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 and future use */
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[4]; /*!< Temporary result/IV */
int32_t mKeySize; /*!< Key length in bytes */
uint32_t amExpKey[CRL_AES_MAX_EXPKEY_SIZE]; /*!< Expanded AES key */
const uint8_t *pmTag; /*!< Pointer to Authentication TAG. This value must be set in decryption, and this TAG will be verified */
int32_t mTagSize; /*!< Size of the Tag to return. This must be set by the caller prior to calling Init */
}
AESCMACctx_stt; /*<! AES context structure for CMAC mode */
/* Exported functions --------------------------------------------------------*/
int32_t AES_CMAC_Encrypt_Init (AESCMACctx_stt *P_pAESCMACctx);
int32_t AES_CMAC_Encrypt_Append(AESCMACctx_stt *P_pAESCMACctx, \
const uint8_t *P_pInputBuffer, \
int32_t P_inputSize);
\
int32_t AES_CMAC_Encrypt_Finish(AESCMACctx_stt *P_pAESCMACctx, \
uint8_t *P_pOutputBuffer, \
int32_t *P_pOutputSize);
\
int32_t AES_CMAC_Decrypt_Init (AESCMACctx_stt *P_pAESCMACctx);
int32_t AES_CMAC_Decrypt_Append(AESCMACctx_stt *P_pAESCMACctx, \
const uint8_t *P_pInputBuffer, \
int32_t P_inputSize);
\
int32_t AES_CMAC_Decrypt_Finish(AESCMACctx_stt *P_pAESCMACctx, \
uint8_t *P_pOutputBuffer, \
int32_t *P_pOutputSize);
\
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* __CRL_AES_CMAC_H__ */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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