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/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** NetX Crypto Component */
/** */
/** SHA-256 Digest Algorithm (SHA2) */
/** */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/* */
/* COMPONENT DEFINITION RELEASE */
/* */
/* nx_crypto_sha2.h PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Timothy Stapko, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This file defines the NetX SHA256 component, derived primarily */
/* from NIST FIPS PUB 180-4 (Crypto Hash Standard). */
/* */
/* It is assumed that nx_api.h and nx_port.h have already been */
/* included. */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 05-19-2020 Timothy Stapko Initial Version 6.0 */
/* 09-30-2020 Timothy Stapko Modified comment(s), */
/* resulting in version 6.1 */
/* */
/**************************************************************************/
#ifndef SRC_NX_CRYPTO_SHA2_H_
#define SRC_NX_CRYPTO_SHA2_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 "nx_crypto.h"
#define NX_CRYPTO_SHA2_BLOCK_SIZE_IN_BYTES 64
#define NX_CRYPTO_SHA224_ICV_LEN_IN_BITS 224
#define NX_CRYPTO_SHA256_ICV_LEN_IN_BITS 256
/* Define the control block structure for backward compatibility. */
#define NX_SHA256 NX_CRYPTO_SHA256
typedef struct NX_CRYPTO_SHA256_STRUCT
{
ULONG nx_sha256_states[8]; /* Contains each state (A,B,C,D,E,F,G,H). */
ULONG nx_sha256_bit_count[2]; /* Contains the 64-bit total bit */
/* count, where index 0 holds the */
/* least significant bit count and */
/* index 1 contains the most */
/* significant portion of the bit */
/* count. */
UCHAR nx_sha256_buffer[64]; /* Working buffer for SHA256 algorithm */
/* where partial buffers are */
/* accumulated until a full block */
/* can be processed. */
ULONG nx_sha256_word_array[64]; /* Working 64 word array. */
} NX_CRYPTO_SHA256;
UINT _nx_crypto_sha256_initialize(NX_CRYPTO_SHA256 *context, UINT algorithm);
UINT _nx_crypto_sha256_update(NX_CRYPTO_SHA256 *context, UCHAR *input_ptr, UINT input_length);
UINT _nx_crypto_sha256_digest_calculate(NX_CRYPTO_SHA256 *context, UCHAR *digest, UINT algorithm);
VOID _nx_crypto_sha256_process_buffer(NX_CRYPTO_SHA256 * context, UCHAR buffer[64]);
UINT _nx_crypto_method_sha256_init(struct NX_CRYPTO_METHOD_STRUCT *method,
UCHAR *key, NX_CRYPTO_KEY_SIZE key_size_in_bits,
VOID **handle,
VOID *crypto_metadata,
ULONG crypto_metadata_size);
UINT _nx_crypto_method_sha256_cleanup(VOID *crypto_metadata);
UINT _nx_crypto_method_sha256_operation(UINT op, /* Encrypt, Decrypt, Authenticate */
VOID *handle, /* Crypto handler */
struct NX_CRYPTO_METHOD_STRUCT *method,
UCHAR *key, NX_CRYPTO_KEY_SIZE key_size_in_bits,
UCHAR *input, ULONG input_length_in_byte,
UCHAR *iv_ptr,
UCHAR *output, ULONG output_length_in_byte,
VOID *crypto_metadata, ULONG crypto_metadata_size,
VOID *packet_ptr,
VOID (*nx_crypto_hw_process_callback)(VOID *packet_ptr, UINT status));
#ifdef __cplusplus
}
#endif
#endif /* SRC_NX_CRYPTO_SHA2_H_ */
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