ECDHCC26X2.h

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/*
 * Copyright (c) 2017-2018, 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,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef ti_drivers_ecdh_ECDHCC26X2__include
#define ti_drivers_ecdh_ECDHCC26X2__include

#ifdef __cplusplus
extern "C" {
#endif

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

#include <ti/drivers/Power.h>
#include <ti/drivers/ECDH.h>
#include <ti/drivers/cryptoutils/ecc/ECCParams.h>
#include <ti/drivers/cryptoutils/cryptokey/CryptoKey.h>

#include <ti/devices/DeviceFamily.h>
#include DeviceFamily_constructPath(driverlib/pka.h)

#include <ti/drivers/dpl/HwiP.h>
#include <ti/drivers/dpl/SwiP.h>
#include <ti/drivers/dpl/SemaphoreP.h>

/* Exit the SWI and wait until an HWI call posts the SWI again */
#define ECDHCC26X2_STATUS_FSM_RUN_PKA_OP       ECDH_STATUS_RESERVED - 0
/* Execute the next FSM state immediately without waiting for the next HWI */
#define ECDHCC26X2_STATUS_FSM_RUN_FSM          ECDH_STATUS_RESERVED - 1

typedef enum ECDHCC26X2_FsmState_ {
    ECDHCC26X2_FSM_ERROR = 0,

    ECDHCC26X2_FSM_GEN_PUB_KEY_VALIDATE_PRIVATE_KEY,
    ECDHCC26X2_FSM_GEN_PUB_KEY_MULT_PRIVATE_KEY_BY_GENERATOR,
    ECDHCC26X2_FSM_GEN_PUB_KEY_MULT_PRIVATE_KEY_BY_GENERATOR_RESULT,
    ECDHCC26X2_FSM_GEN_PUB_KEY_RETURN,

    ECDHCC26X2_FSM_GEN_PUB_KEY_VALIDATE_PRIVATE_KEY_MONTGOMERY,
    ECDHCC26X2_FSM_GEN_PUB_KEY_MULT_PRIVATE_KEY_BY_GENERATOR_MONTGOMERY,
    ECDHCC26X2_FSM_GEN_PUB_KEY_MULT_PRIVATE_KEY_BY_GENERATOR_RESULT_MONTGOMERY,
    ECDHCC26X2_FSM_GEN_PUB_KEY_RETURN_MONTGOMERY,

    ECDHCC26X2_FSM_COMPUTE_SHARED_SECRET_VALIDATE_PUB_KEY,
    ECDHCC26X2_FSM_COMPUTE_SHARED_SECRET_MULT_PRIVATE_KEY_BY_PUB_KEY,
    ECDHCC26X2_FSM_COMPUTE_SHARED_SECRET_MULT_PRIVATE_KEY_BY_PUB_KEY_RESULT,
    ECDHCC26X2_FSM_COMPUTE_SHARED_SECRET_RETURN,

    ECDHCC26X2_FSM_COMPUTE_SHARED_SECRET_MULT_PRIVATE_KEY_BY_PUB_KEY_MONTGOMERY,
    ECDHCC26X2_FSM_COMPUTE_SHARED_SECRET_MULT_PRIVATE_KEY_BY_PUB_KEY_RESULT_MONTGOMERY,
    ECDHCC26X2_FSM_COMPUTE_SHARED_SECRET_RETURN_MONTGOMERY,
} ECDHCC26X2_FsmState;

typedef struct ECDHCC26X2_HWAttrs_ {
    uint8_t    intPriority;
    uint32_t   swiPriority;
} ECDHCC26X2_HWAttrs;

typedef struct ECDHCC26X2_Object_ {
    bool                            isOpen;
    int_fast16_t                    returnValue;
    ECDH_CallbackFxn                callbackFxn;
    ECDH_ReturnBehavior             returnBehavior;
    ECDH_Operation                  operation;
    ECDH_OperationType              operationType;
    ECDHCC26X2_FsmState             fsmState;
    uint32_t                        semaphoreTimeout;
    uint32_t                        resultAddress;
    SwiP_Struct                     callbackSwi;
} ECDHCC26X2_Object;

#ifdef __cplusplus
}
#endif

#endif /* ti_drivers_ecdh_ECDHCC26X2__include */