MCUX CLNS
MCUX Crypto Library Normal Secure
mcuxClEls_Hash_Sha512_One_Block_example.c

Example of SHA2-512 hashing using the ELS (CLNS component mcuxClEls)

/*--------------------------------------------------------------------------*/
/* Copyright 2020, 2022-2023 NXP */
/* */
/* NXP Confidential. This software is owned or controlled by NXP and may */
/* only be used strictly in accordance with the applicable license terms. */
/* By expressly accepting such terms or by downloading, installing, */
/* activating and/or otherwise using the software, you are agreeing that */
/* you have read, and that you agree to comply with and are bound by, such */
/* license terms. If you do not agree to be bound by the applicable license */
/* terms, then you may not retain, install, activate or otherwise use the */
/* software. */
/*--------------------------------------------------------------------------*/
#include <mcuxClEls.h> // Interface to the entire mcuxClEls component
#include <mcuxClCore_FunctionIdentifiers.h> // Code flow protection
#include <mcuxClCore_Examples.h>
#include <mcuxClExample_ELS_Helper.h>
static uint8_t const sha512_padded_input[MCUXCLELS_HASH_BLOCK_SIZE_SHA_512] = {0x61U, 0x62U, 0x63U, 0x80U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00u, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00u, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x00U,
0x00U, 0x00U, 0x00U, 0x18U};
static uint8_t sha512_reference_digest[MCUXCLELS_HASH_OUTPUT_SIZE_SHA_512] = {0xddU, 0xafU, 0x35U, 0xa1U,
0x93U, 0x61U, 0x7aU, 0xbaU,
0xccU, 0x41U, 0x73U, 0x49U,
0xaeU, 0x20U, 0x41U, 0x31U,
0x12U, 0xe6U, 0xfaU, 0x4eU,
0x89U, 0xa9U, 0x7eU, 0xa2U,
0x0aU, 0x9eU, 0xeeU, 0xe6U,
0x4bU, 0x55U, 0xd3U, 0x9aU,
0x21U, 0x92U, 0x99U, 0x2aU,
0x27U, 0x4fU, 0xc1U, 0xa8U,
0x36U, 0xbaU, 0x3cU, 0x23U,
0xa3U, 0xfeU, 0xebU, 0xbdU,
0x45U, 0x4dU, 0x44U, 0x23U,
0x64U, 0x3cU, 0xe8U, 0x0eU,
0x2aU, 0x9aU, 0xc9U, 0x4fU,
0xa5U, 0x4cU, 0xa4U, 0x9fU};
static uint8_t sha2_512_digest[MCUXCLELS_HASH_STATE_SIZE_SHA_512]; // MCUXCLELS_HASH_STATE_SIZE_SHA_512 has to be used as the mcuxClEls_Hash_Async do not perform the truncation of the hash state.
MCUXCLEXAMPLE_FUNCTION(mcuxClEls_Hash_Sha512_One_Block_example)
{
if(!mcuxClExample_Els_Init(MCUXCLELS_RESET_DO_NOT_CANCEL))
{
return MCUXCLEXAMPLE_STATUS_ERROR;
}
mcuxClEls_HashOption_t hash_options = {0U}; // Initialize a new configuration for the planned mcuxClEls_Hash_Async operation.
hash_options.bits.hashini = MCUXCLELS_HASH_INIT_ENABLE; // Configure that the mcuxClEls_Hash_Async operation shall initialized with the standard IV (Initialization Vector).
hash_options.bits.hashoe = MCUXCLELS_HASH_OUTPUT_ENABLE; // Configure the mcuxClEls_Hash_Async operation so that the hash digest is moved into memory at the end of the operation.
hash_options.bits.hashmd = MCUXCLELS_HASH_MODE_SHA_512; // Configure the mcuxClEls_Hash_Async operation so that the Sha2-512 algorithm is used.
MCUX_CSSL_FP_FUNCTION_CALL_BEGIN(result, token, mcuxClEls_Hash_Async( // Perform the hashing.
hash_options, // Set the prepared configuration.
sha512_padded_input, sizeof(sha512_padded_input), // Set the data to be hashed. Note that this data's length is a multiple of the block length, so no padding is required
sha2_512_digest // Output buffer, which the operation will write the hash digest to.
));
// mcuxClEls_Hash_Async is a flow-protected function: Check the protection token and the return value
{
return MCUXCLEXAMPLE_STATUS_ERROR; // Expect that no error occurred, meaning that the mcuxClEls_Hash_Async operation was started.
}
MCUX_CSSL_FP_FUNCTION_CALL_BEGIN(result, token, mcuxClEls_WaitForOperation(MCUXCLELS_ERROR_FLAGS_CLEAR)); // Wait for the mcuxClEls_Hash_Async operation to complete.
// mcuxClEls_WaitForOperation is a flow-protected function: Check the protection token and the return value
{
return MCUXCLEXAMPLE_STATUS_ERROR;
}
for (size_t i = 0; i < sizeof(sha512_reference_digest); i++)
{
{
return MCUXCLEXAMPLE_STATUS_ERROR; // Expect that the resulting hash digest matches our expected output
}
}
if(!mcuxClExample_Els_Disable())
{
return MCUXCLEXAMPLE_STATUS_ERROR;
}
return MCUXCLEXAMPLE_STATUS_OK;
}