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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 */
/** */
/** HMAC SHA1 Digest Algorithm (SHA1) */
/** */
/**************************************************************************/
/**************************************************************************/
#include "nx_crypto_sha1.h"
#include "nx_crypto_hmac_sha1.h"
#include "nx_crypto_hmac.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nx_crypto_method_hmac_sha1_init PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Timothy Stapko, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function is the common crypto method init callback for */
/* Microsoft supported HMAC SHA1 cryptographic algorithm. */
/* */
/* INPUT */
/* */
/* method Pointer to crypto method */
/* key Pointer to key */
/* key_size_in_bits Length of key size in bits */
/* handler Returned crypto handler */
/* crypto_metadata Metadata area */
/* crypto_metadata_size Size of the metadata area */
/* */
/* 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 */
/* */
/**************************************************************************/
NX_CRYPTO_KEEP UINT _nx_crypto_method_hmac_sha1_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)
{
NX_CRYPTO_PARAMETER_NOT_USED(key_size_in_bits);
NX_CRYPTO_PARAMETER_NOT_USED(handle);
NX_CRYPTO_STATE_CHECK
if ((method == NX_CRYPTO_NULL) || (key == NX_CRYPTO_NULL) || (crypto_metadata == NX_CRYPTO_NULL))
{
return(NX_CRYPTO_PTR_ERROR);
}
/* Verify the metadata addrsss is 4-byte aligned. */
if((((ULONG)crypto_metadata) & 0x3) != 0)
{
return(NX_CRYPTO_PTR_ERROR);
}
if(crypto_metadata_size < sizeof(NX_CRYPTO_SHA1_HMAC))
{
return(NX_CRYPTO_PTR_ERROR);
}
return(NX_CRYPTO_SUCCESS);
}
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nx_crypto_method_hmac_sha1_cleanup PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Timothy Stapko, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function cleans up the crypto metadata. */
/* */
/* INPUT */
/* */
/* crypto_metadata Crypto metadata */
/* */
/* OUTPUT */
/* */
/* status Completion status */
/* */
/* CALLS */
/* */
/* NX_CRYPTO_MEMSET Set the memory */
/* */
/* 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 */
/* */
/**************************************************************************/
NX_CRYPTO_KEEP UINT _nx_crypto_method_hmac_sha1_cleanup(VOID *crypto_metadata)
{
NX_CRYPTO_STATE_CHECK
#ifdef NX_SECURE_KEY_CLEAR
if (!crypto_metadata)
return (NX_CRYPTO_SUCCESS);
/* Clean up the crypto metadata. */
NX_CRYPTO_MEMSET(crypto_metadata, 0, sizeof(NX_CRYPTO_SHA1_HMAC));
#else
NX_CRYPTO_PARAMETER_NOT_USED(crypto_metadata);
#endif/* NX_SECURE_KEY_CLEAR */
return(NX_CRYPTO_SUCCESS);
}
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nx_crypto_method_hmac_sha1_operation PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Timothy Stapko, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function handles HMAC SHA1 Authentication operation. */
/* */
/* INPUT */
/* */
/* op Operation Type */
/* Encrypt, Decrypt, Authenticate*/
/* handler Pointer to crypto context */
/* key Pointer to key */
/* key_size_in_bits Length of key size in bits */
/* input Input Stream */
/* input_length_in_byte Input Stream Length */
/* iv_ptr Initialized Vector */
/* output Output Stream */
/* output_length_in_byte Output Stream Length */
/* crypto_metadata Metadata area */
/* crypto_metadata_size Size of the metadata area */
/* packet_ptr Pointer to packet */
/* nx_crypto_hw_process_callback Callback function pointer */
/* */
/* OUTPUT */
/* */
/* status Completion status */
/* */
/* CALLS */
/* */
/* _nx_crypto_hmac Calculate the HMAC */
/* _nx_crypto_hmac_metadata_set Set HMAC metadata */
/* _nx_crypto_hmac_initialize Perform HMAC initialization */
/* _nx_crypto_hmac_update Perform HMAC update */
/* _nx_crypto_hmac_digest_calculate Calculate HMAC digest */
/* */
/* 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 */
/* */
/**************************************************************************/
NX_CRYPTO_KEEP UINT _nx_crypto_method_hmac_sha1_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))
{
NX_CRYPTO_SHA1_HMAC *ctx;
NX_CRYPTO_HMAC *hmac_metadata;
NX_CRYPTO_PARAMETER_NOT_USED(handle);
NX_CRYPTO_PARAMETER_NOT_USED(iv_ptr);
NX_CRYPTO_PARAMETER_NOT_USED(packet_ptr);
NX_CRYPTO_PARAMETER_NOT_USED(nx_crypto_hw_process_callback);
NX_CRYPTO_STATE_CHECK
/* Verify the metadata addrsss is 4-byte aligned. */
if((method == NX_CRYPTO_NULL) || (crypto_metadata == NX_CRYPTO_NULL) || ((((ULONG)crypto_metadata) & 0x3) != 0))
{
return(NX_CRYPTO_PTR_ERROR);
}
if(crypto_metadata_size < sizeof(NX_CRYPTO_SHA1_HMAC))
{
return(NX_CRYPTO_PTR_ERROR);
}
ctx = (NX_CRYPTO_SHA1_HMAC *)crypto_metadata;
hmac_metadata = &ctx->nx_sha1_hmac_metadata;
_nx_crypto_hmac_metadata_set(hmac_metadata,
&(ctx -> nx_sha1_hmac_context),
method -> nx_crypto_algorithm,
NX_CRYPTO_SHA1_BLOCK_SIZE_IN_BYTES,
NX_CRYPTO_HMAC_SHA1_ICV_FULL_LEN_IN_BITS >> 3,
(UINT (*)(VOID *, UINT))_nx_crypto_sha1_initialize,
(UINT (*)(VOID *, UCHAR *, UINT))_nx_crypto_sha1_update,
(UINT (*)(VOID *, UCHAR *, UINT))_nx_crypto_sha1_digest_calculate);
switch (op)
{
case NX_CRYPTO_HASH_INITIALIZE:
if(key == NX_CRYPTO_NULL)
{
return(NX_CRYPTO_PTR_ERROR);
}
_nx_crypto_hmac_initialize(hmac_metadata, key, key_size_in_bits >> 3);
break;
case NX_CRYPTO_HASH_UPDATE:
_nx_crypto_hmac_update(hmac_metadata, input, input_length_in_byte);
break;
case NX_CRYPTO_HASH_CALCULATE:
if(output_length_in_byte == 0)
{
return(NX_CRYPTO_INVALID_BUFFER_SIZE);
}
_nx_crypto_hmac_digest_calculate(hmac_metadata, output,
(output_length_in_byte > (ULONG)((method -> nx_crypto_ICV_size_in_bits) >> 3) ?
((method -> nx_crypto_ICV_size_in_bits) >> 3) : output_length_in_byte));
break;
default:
if(key == NX_CRYPTO_NULL)
{
return(NX_CRYPTO_PTR_ERROR);
}
if(output_length_in_byte == 0)
{
return(NX_CRYPTO_INVALID_BUFFER_SIZE);
}
_nx_crypto_hmac(hmac_metadata, input, input_length_in_byte, key, (key_size_in_bits >> 3), output,
(output_length_in_byte > (ULONG)((method -> nx_crypto_ICV_size_in_bits) >> 3) ?
((method -> nx_crypto_ICV_size_in_bits) >> 3) : output_length_in_byte));
break;
}
return NX_CRYPTO_SUCCESS;
}