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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 */
/** */
/** DES Encryption Standard (DES) */
/** */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/* */
/* COMPONENT DEFINITION RELEASE */
/* */
/* nx_crypto_des.h PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Timothy Stapko, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This file defines the NetX DES encryption algorithm, derived */
/* principally from FIPS-46. From an 8 bytes of raw input, the DES */
/* encryption routine produces an 8-byte encryption of the input. */
/* Conversely, from an 8-byte encryption, the decryption routine */
/* produces the original 8 bytes of input. Note that the caller must */
/* ensure 8 bytes of input and output are provided. */
/* */
/* 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 _NX_CRYPTO_DES_H_
#define _NX_CRYPTO_DES_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"
#include "nx_crypto_cbc.h"
#define NX_CRYPTO_DES_KEY_LEN_IN_BITS 64
#define NX_CRYPTO_DES_BLOCK_SIZE_IN_BITS 64
#define NX_CRYPTO_DES_IV_LEN_IN_BITS 64
UINT _nx_crypto_method_des_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_des_cleanup(VOID *crypto_metadata);
UINT _nx_crypto_method_des_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));
/* Define the DES context structure. */
typedef struct NX_CRYPTO_DES_STRUCT
{
ULONG nx_des_encryption_keys[32]; /* Contains the encryption keys */
ULONG nx_des_decryption_keys[32]; /* Contains the decryption keys */
NX_CRYPTO_CBC nx_crypto_cbc_context; /* CBC metadata */
} NX_CRYPTO_DES;
/* Define the function prototypes for DES. */
UINT _nx_crypto_des_key_set(NX_CRYPTO_DES * context, UCHAR key[8]);
UINT _nx_crypto_des_encrypt(NX_CRYPTO_DES * context, UCHAR source[8], UCHAR destination[8], UINT length);
UINT _nx_crypto_des_decrypt(NX_CRYPTO_DES * context, UCHAR source[8], UCHAR destination[8], UINT length);
VOID _nx_crypto_des_process_block(UCHAR source[8], UCHAR destination[8], ULONG keys[32]);
#ifdef __cplusplus
}
#endif
#endif
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