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/**
******************************************************************************
* @file arc4.h
* @author MCD Application Team
* @brief ARC4
******************************************************************************
* @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_ARC4_H__
#define __CRL_ARC4_H__
#ifdef __cplusplus
extern "C"
{
#endif
/** @ingroup ARC4
* @{
*/
/**
* @brief Structure describing an ARC4 context
*/
/* Exported types ------------------------------------------------------------*/
typedef struct
{
uint32_t mContextId; /*!< Unique ID of this AES-GCM Context. \b Not \b used in current implementation. */
SKflags_et mFlags; /*!< 32 bit mFlags, for future use */
const uint8_t *pmKey; /*!< Pointer to original Key buffer */
int32_t mKeySize; /*!< ARC4 Key length in bytes. This must be set by the caller prior to calling Init */
uint8_t mX; /*!< Internal members: This describe one of two index variables of the ARC4 state */
uint8_t mY; /*!< Internal members: This describe one of two index variables of the ARC4 state */
uint8_t amState[256]; /*!< Internal members: This describe the 256 bytes State Matrix */
}
ARC4ctx_stt;
/* Exported functions --------------------------------------------------------*/
int32_t ARC4_Encrypt_Init(ARC4ctx_stt *P_pARC4ctx, \
const uint8_t *P_pKey, \
const uint8_t *P_pIv);
int32_t ARC4_Encrypt_Append(ARC4ctx_stt *P_pARC4ctx, \
const uint8_t *P_pInputBuffer, \
int32_t P_inputSize, \
uint8_t *P_pOutputBuffer, \
int32_t *P_pOutputSize);
int32_t ARC4_Encrypt_Finish(ARC4ctx_stt *P_pARC4ctx, \
uint8_t *P_pOutputBuffer, \
int32_t *P_pOutputSize);
int32_t ARC4_Decrypt_Init(ARC4ctx_stt *P_pARC4ctx, \
const uint8_t *P_pKey, \
const uint8_t *P_pIv);
int32_t ARC4_Decrypt_Append(ARC4ctx_stt *P_pARC4ctx, \
const uint8_t *P_pInputBuffer, \
int32_t P_inputSize, \
uint8_t *P_pOutputBuffer, \
int32_t *P_pOutputSize);
int32_t ARC4_Decrypt_Finish (ARC4ctx_stt *P_pARC4ctx, \
uint8_t *P_pOutputBuffer, \
int32_t *P_pOutputSize);
/** @} */
#ifdef __cplusplus
}
#endif
#endif /*__CRL_AES_ECB_H__*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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