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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 */
/** */
/** CTR Mode */
/** */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/* */
/* APPLICATION INTERFACE DEFINITION RELEASE */
/* */
/* nx_crypto_ctr.h PORTABLE C */
/* 6.4.3 */
/* AUTHOR */
/* */
/* Timothy Stapko, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This file defines the basic Application Interface (API) to the */
/* NetX Crypto CTR module. */
/* */
/**************************************************************************/
#ifndef NX_CRYPTO_CTR_H
#define NX_CRYPTO_CTR_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_CTR_BLOCK_SIZE 16
typedef struct NX_CRYPTO_CTR_STRUCT
{
/* Counter block. */
UCHAR nx_crypto_ctr_counter_block[NX_CRYPTO_CTR_BLOCK_SIZE];
} NX_CRYPTO_CTR;
/* The CTR mode is symmetric - encryption and decryption are the same operation. */
NX_CRYPTO_KEEP UINT _nx_crypto_ctr_encrypt(VOID *crypto_metadata, NX_CRYPTO_CTR *ctr_metadata,
UINT (*crypto_function)(VOID *, UCHAR *, UCHAR *, UINT),
UCHAR *input, UCHAR *output, UINT length, UINT block_size);
NX_CRYPTO_KEEP UINT _nx_crypto_ctr_encrypt_init(NX_CRYPTO_CTR *ctr_metadata, UCHAR *iv, UINT iv_len,
UCHAR *nonce, UINT nonce_len);
#define _nx_crypto_ctr_decrypt _nx_crypto_ctr_encrypt
#ifdef __cplusplus
}
#endif
#endif /* NX_CRYPTO_CTR_H */
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