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/***************************************************************************
* Copyright (c) 2024 Microsoft Corporation
* Copyright (c) 2025-present Eclipse ThreadX Contributors
*
* This program and the accompanying materials are made available under the
* terms of the MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** NetX Crypto Component */
/** */
/** GCM Mode */
/** */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/* */
/* APPLICATION INTERFACE DEFINITION RELEASE */
/* */
/* nx_crypto_gcm.h PORTABLE C */
/* 6.4.3 */
/* AUTHOR */
/* */
/* Timothy Stapko, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This file defines the basic Application Interface (API) to the */
/* NetX Crypto GCM module. */
/* */
/**************************************************************************/
#ifndef NX_CRYPTO_GCM_H
#define NX_CRYPTO_GCM_H
/* Determine if a C++ compiler is being used. If so, ensure that standard
C is used to process the API information. */
#ifdef __cplusplus
/* Yes, C++ compiler is present. Use standard C. */
extern "C" {
#endif
/* Include the ThreadX and port-specific data type file. */
#include "nx_crypto.h"
#define NX_CRYPTO_GCM_BLOCK_SIZE 16
#define NX_CRYPTO_GCM_BLOCK_SIZE_BITS 128
#define NX_CRYPTO_GCM_BLOCK_SIZE_INT 4
#define NX_CRYPTO_GCM_BLOCK_SIZE_SHIFT 4
typedef struct NX_CRYPTO_GCM_STRUCT
{
/* Total length of input. */
ULONG nx_crypto_gcm_input_total_length;
/* Internal context of GCM mode. */
UCHAR nx_crypto_gcm_hkey[NX_CRYPTO_GCM_BLOCK_SIZE];
UCHAR nx_crypto_gcm_j0[NX_CRYPTO_GCM_BLOCK_SIZE];
UCHAR nx_crypto_gcm_s[NX_CRYPTO_GCM_BLOCK_SIZE];
UCHAR nx_crypto_gcm_counter[NX_CRYPTO_GCM_BLOCK_SIZE];
/* Pointer of additional data. */
VOID *nx_crypto_gcm_additional_data;
/* Length of additional data. */
UINT nx_crypto_gcm_additional_data_len;
} NX_CRYPTO_GCM;
NX_CRYPTO_KEEP UINT _nx_crypto_gcm_encrypt_init(VOID *crypto_metadata, NX_CRYPTO_GCM *gcm_metadata,
UINT (*crypto_function)(VOID *, UCHAR *, UCHAR *, UINT),
VOID *additional_data, UINT additional_len,
UCHAR *iv, UINT block_size);
NX_CRYPTO_KEEP UINT _nx_crypto_gcm_encrypt_update(VOID *crypto_metadata, NX_CRYPTO_GCM *gcm_metadata,
UINT (*crypto_function)(VOID *, UCHAR *, UCHAR *, UINT),
UCHAR *input, UCHAR *output, UINT length,
UINT block_size);
NX_CRYPTO_KEEP UINT _nx_crypto_gcm_encrypt_calculate(VOID *crypto_metadata, NX_CRYPTO_GCM *gcm_metadata,
UINT (*crypto_function)(VOID *, UCHAR *, UCHAR *, UINT),
UCHAR *output, UINT icv_len, UINT block_size);
NX_CRYPTO_KEEP UINT _nx_crypto_gcm_decrypt_update(VOID *crypto_metadata, NX_CRYPTO_GCM *gcm_metadata,
UINT (*crypto_function)(VOID *, UCHAR *, UCHAR *, UINT),
UCHAR *input, UCHAR *output, UINT length,
UINT block_size);
NX_CRYPTO_KEEP UINT _nx_crypto_gcm_decrypt_calculate(VOID *crypto_metadata, NX_CRYPTO_GCM *gcm_metadata,
UINT (*crypto_function)(VOID *, UCHAR *, UCHAR *, UINT),
UCHAR *input, UINT icv_len, UINT block_size);
#define _nx_crypto_gcm_decrypt_init _nx_crypto_gcm_encrypt_init
#ifdef __cplusplus
}
#endif
#endif /* NX_CRYPTO_GCM_H */
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