AESGCMLPF3.h

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

#include <ti/drivers/AESGCM.h>
#include <ti/drivers/cryptoutils/aes/AESCommonLPF3.h>

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

/* This implementation only supports 12 Byte IVs */
#define AESGCMLPF3_IV_LENGTH 12U

/* Number of 16B entries in the pre-computed table for each key in GHASH operation */
#define AESGCMLPF3_HASH_PRECOMPUTE_TABLE_SIZE 16U

typedef AESCommonLPF3_HWAttrs AESGCMLPF3_HWAttrs;

typedef struct
{
    /* Common member first to allow struct to be cast to the common type */
    AESCommonLPF3_Object common;
    uint32_t hashKey[AES_BLOCK_SIZE_WORDS];
    uint8_t tagOTP[AES_BLOCK_SIZE];
    uint8_t intermediateTag[AES_BLOCK_SIZE];
    size_t inputLength;
    size_t inputLengthRemaining;
    uint32_t counter[AES_BLOCK_SIZE_WORDS];
    const uint8_t *input;
    uint8_t *output;
    uint8_t *mac;
    uint8_t *aad;

    AESGCM_OperationUnion *operation;
    AESGCM_OperationType operationType;
    bool threadSafe;
} AESGCMLPF3_Object;