CryptoKey.h

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/*
 * Copyright (c) 2017-2022, Texas Instruments Incorporated
 * All rights reserved.
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 *    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.
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 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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 */
#ifndef ti_drivers_cryptoutils_cyptokey_CryptoKey__include
#define ti_drivers_cryptoutils_cyptokey_CryptoKey__include

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

#if (ENABLE_KEY_STORAGE == 1) || (SPE_ENABLED == 1)
    #include <ti/drivers/cryptoutils/cryptokey/CryptoKeyKeyStore_PSA.h>
#endif

#ifdef __cplusplus
extern "C" {
#endif

#define CryptoKey_STATUS_RESERVED (-32)

#define CryptoKey_STATUS_SUCCESS (0)

#define CryptoKey_STATUS_ERROR (-1)

#define CryptoKey_STATUS_UNDEFINED_ENCODING (-2)

typedef uint8_t CryptoKey_Encoding;
static const CryptoKey_Encoding CryptoKey_PLAINTEXT       = 0x02U;
static const CryptoKey_Encoding CryptoKey_BLANK_PLAINTEXT = 0x04U;
static const CryptoKey_Encoding CryptoKey_KEYSTORE        = 0x08U;
static const CryptoKey_Encoding CryptoKey_BLANK_KEYSTORE  = 0x10U;

typedef struct
{
    uint8_t *keyMaterial;
    uint32_t keyLength;
} CryptoKey_Plaintext;

typedef struct
{
    uint32_t keyLength;
    uint32_t keyID;
#if (ENABLE_KEY_STORAGE == 1) || (SPE_ENABLED == 1)
    KeyStore_PSA_KeyAttributes attributes;
#endif
} CryptoKey_KeyStore;

typedef struct
{
    CryptoKey_Encoding encoding;
    union
    {
        CryptoKey_Plaintext plaintext;
        CryptoKey_KeyStore keyStore;
    } u;
} CryptoKey;

typedef struct CryptoKey_SecurityPolicy_ CryptoKey_SecurityPolicy;

int_fast16_t CryptoKey_getCryptoKeyType(CryptoKey *keyHandle, CryptoKey_Encoding *keyType);

int_fast16_t CryptoKey_isBlank(CryptoKey *keyHandle, bool *isBlank);

int_fast16_t CryptoKey_markAsBlank(CryptoKey *keyHandle);

int_fast16_t CryptoKey_initSecurityPolicy(CryptoKey_SecurityPolicy *policy);

int_fast16_t CryptoKey_verifySecureInputKey(CryptoKey *secureKey);

int_fast16_t CryptoKey_verifySecureOutputKey(CryptoKey *secureKey);

#ifdef __cplusplus
}
#endif

#endif /* ti_drivers_cryptoutils_cyptokey_CryptoKey__include */