netxduo
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Outline
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#define NX_SECURE_SOURCE_CODE
#include "nx_secure_tls.h"
#define NX_SECURE_SOURCE_CODE
#include "nx_secure_tls_api.h"
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nx_secure_module_hash_compute(NX_CRYPTO_METHOD *, UINT, UINT, UCHAR *, UINT, void *, UINT, UCHAR *, UINT, UINT *)
Files
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SourceVuSTM32 Libraries and Samplesnetxduonx_secure/src/nx_secure_module_hash_compute.c
 
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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 Secure Component */ /** */ /** Transport Layer Security (TLS) */ /** */... /**************************************************************************/ /**************************************************************************/ #define NX_SECURE_SOURCE_CODE /* Include necessary system files. */ #include "nx_secure_tls.h" #define NX_SECURE_SOURCE_CODE #include "nx_secure_tls_api.h" .../**************************************************************************/ /* */ /* FUNCTION RELEASE */ /* */ /* nx_secure_module_hash_compute PORTABLE C */ /* 6.1 */ /* AUTHOR */ /* */ /* Timothy Stapko, Microsoft Corporation */ /* */ /* DESCRIPTION */ /* */ /* This function uses user-supplied HMAC-SHA256 function (in the */ /* proper NX_CRYPTO_METHOD structure) to compute the hash value of */ /* the program memory marked by the symbols EL_SECURE_PROGRAM_BEGIN */ /* and EL_SECURE_PROGRAM_END. */ /* */ /* INPUT */ /* */ /* hmac_sha2_ptr Pointer to NX_CRYPTO_METHOD */ /* structure that contains */ /* HMAC-SHA256 */ /* key User-specified key for */ /* computing the hash */ /* key_length Size of the key, in bytes */ /* output_buffer Output buffer space for */ /* storing the computed HMAC */ /* output_buffer_size Size of the output buffer */ /* actual_size Size of the HMAC message, in */ /* bytes */ /* */ /* OUTPUT */ /* */ /* status Completion status */ /* */ /* CALLS */ /* */ /* None */ /* */ /* CALLED BY */ /* */ /* Application Code */ /* */ /* 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 */ /* */... /**************************************************************************/ UINT nx_secure_module_hash_compute(NX_CRYPTO_METHOD *hmac_ptr, UINT start_address, UINT end_address, UCHAR *key, UINT key_length, VOID *metadata, UINT metadata_size, UCHAR *output_buffer, UINT output_buffer_size, UINT *actual_size) { #ifdef NX_SECURE_POWER_ON_SELF_TEST_MODULE_INTEGRITY_CHECK VOID *handler = NX_NULL; UINT status; if(output_buffer_size < 32) return(1); /* Validate the crypto table. */ if(hmac_ptr == NX_NULL) return(1); if(hmac_ptr -> nx_crypto_algorithm != NX_CRYPTO_AUTHENTICATION_HMAC_SHA2_256) return(1); if (hmac_ptr -> nx_crypto_init) { status = hmac_ptr -> nx_crypto_init(hmac_ptr, key, (key_length << 3), &handler, metadata, metadata_size); if (status != NX_CRYPTO_SUCCESS) { return(1); }if (status != NX_CRYPTO_SUCCESS) { ... } }if (hmac_ptr -> nx_crypto_init) { ... } if (hmac_ptr -> nx_crypto_operation == NX_NULL) { return(1); }if (hmac_ptr -> nx_crypto_operation == NX_NULL) { ... } /* Now compute the hash */ status = hmac_ptr -> nx_crypto_operation(NX_CRYPTO_AUTHENTICATE, handler, /* handle, not used */ hmac_ptr, /* Method, not used */ key, (key_length << 3), (UCHAR*)start_address, /* Data start */ end_address - start_address, /* Data Length */ NX_NULL, /* iv_ptr, not used */ output_buffer, output_buffer_size, metadata, metadata_size, NX_NULL, /* packet_ptr, not used. */ NX_NULL);/* HW process callback, not used. */ if (status) { return(1); }if (status) { ... } if (hmac_ptr -> nx_crypto_cleanup) { status = hmac_ptr -> nx_crypto_cleanup(metadata); if (status) { return(1); }if (status) { ... } }if (hmac_ptr -> nx_crypto_cleanup) { ... } *actual_size = (hmac_ptr -> nx_crypto_ICV_size_in_bits >> 3); return(0);/* ... */ #else NX_PARAMETER_NOT_USED(hmac_ptr); NX_PARAMETER_NOT_USED(start_address); NX_PARAMETER_NOT_USED(end_address); NX_PARAMETER_NOT_USED(key); NX_PARAMETER_NOT_USED(key_length); NX_PARAMETER_NOT_USED(metadata); NX_PARAMETER_NOT_USED(metadata_size); NX_PARAMETER_NOT_USED(output_buffer); NX_PARAMETER_NOT_USED(output_buffer_size); NX_PARAMETER_NOT_USED(actual_size); return(0);/* ... */ #endif }{ ... }
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