AESCBC.h

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/*
 * Copyright (c) 2018, Texas Instruments Incorporated
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * *  Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * *  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.
 *
 * *  Neither the name of Texas Instruments Incorporated 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 OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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 */
#ifndef ti_drivers_AESCBC__include
#define ti_drivers_AESCBC__include

#ifdef __cplusplus
extern "C" {
#endif

#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>

#include <ti/drivers/cryptoutils/cryptokey/CryptoKey.h>

#define AESCBC_CMD_RESERVED           (32)

#define AESCBC_STATUS_RESERVED        (-32)

#define AESCBC_STATUS_SUCCESS         (0)

#define AESCBC_STATUS_ERROR           (-1)

#define AESCBC_STATUS_UNDEFINEDCMD    (-2)

#define AESCBC_STATUS_RESOURCE_UNAVAILABLE (-3)

/* Add AESCBC_CMD_<commands> here */

typedef struct AESCBC_Config_    *AESCBC_Handle;

typedef enum AESCBC_ReturnBehavior_ {
    AESCBC_RETURN_BEHAVIOR_CALLBACK = 1,    
    AESCBC_RETURN_BEHAVIOR_BLOCKING = 2,    
    AESCBC_RETURN_BEHAVIOR_POLLING  = 4,    
} AESCBC_ReturnBehavior;

typedef enum AESCBC_Mode_ {
    AESCBC_MODE_ENCRYPT = 1,
    AESCBC_MODE_DECRYPT = 2,
} AESCBC_Mode;

typedef struct AESCBC_Operation_ {
   CryptoKey                *key;                       
   const uint8_t            *input;                     
   uint8_t                  *output;                    
   uint8_t                  *iv;                        
   size_t                   inputLength;                
   bool                     ivInternallyGenerated;      
} AESCBC_Operation;

typedef enum AESCBC_OperationType_ {
    AESCBC_OPERATION_TYPE_ENCRYPT = 1,
    AESCBC_OPERATION_TYPE_DECRYPT = 2,
} AESCBC_OperationType;

typedef struct AESCBC_Config_ {
    void               *object;

    void         const *hwAttrs;
} AESCBC_Config;

typedef void (*AESCBC_CallbackFxn) (AESCBC_Handle handle,
                                    int_fast16_t returnValue,
                                    AESCBC_Operation *operation,
                                    AESCBC_OperationType operationType);

typedef struct AESCBC_Params_ {
    AESCBC_ReturnBehavior   returnBehavior;             
    AESCBC_CallbackFxn      callbackFxn;                
    uint32_t                timeout;                    
    void                   *custom;                     
} AESCBC_Params;

extern const AESCBC_Params AESCBC_defaultParams;

void AESCBC_init(void);

void AESCBC_Params_init(AESCBC_Params *params);

AESCBC_Handle AESCBC_open(uint_least8_t index, AESCBC_Params *params);

void AESCBC_close(AESCBC_Handle handle);

int_fast16_t AESCBC_control(AESCBC_Handle handle, uint32_t cmd, void *args);

void AESCBC_Operation_init(AESCBC_Operation *operationStruct);

int_fast16_t AESCBC_oneStepEncrypt(AESCBC_Handle handle, AESCBC_Operation *operationStruct);

int_fast16_t AESCBC_oneStepDecrypt(AESCBC_Handle handle, AESCBC_Operation *operationStruct);

#ifdef __cplusplus
}
#endif

#endif /* ti_drivers_AESCBC__include */