HMAC module header file. More...
#include "mcl/mcl_common.h"
Go to the source code of this file.
Functions | |
E_MCL_ERROR_CODE | hmac_sha256 (const mcl_uint8_t *data, mcl_size_t data_size, const mcl_uint8_t *key, mcl_size_t key_size, mcl_uint8_t **hash, mcl_size_t *hash_size) |
HMAC module header file.
Definition in file hmac.h.
E_MCL_ERROR_CODE hmac_sha256 | ( | const mcl_uint8_t * | data, |
mcl_size_t | data_size, | ||
const mcl_uint8_t * | key, | ||
mcl_size_t | key_size, | ||
mcl_uint8_t ** | hash, | ||
mcl_size_t * | hash_size | ||
) |
Calculates HMAC SHA256 for given data with provided secret key
. If secret key
exceeds maximum allowed size of 64 bytes it will be reduced to 32 bytes. The reduction is done by calculating SHA256 hash of the key, which returns 32 bytes.
[in] | data | Data to calculate HMAC SHA256 for. |
[in] | data_size | Size of data . |
[in] | key | Secret key to be used during calculation. |
[in] | key_size | Size of key . |
[out] | hash | A newly allocated memory which contains the result of HMAC SHA256. |
[out] | hash_size | Size of hash , which should be 32 bytes after SHA256 calculation. |
key_size
is zero. Definition at line 27 of file hmac.c.
References ASSERT_CODE_MESSAGE, ASSERT_STATEMENT_CODE_MESSAGE, DEBUG_ENTRY, DEBUG_LEAVE, hmac_ipad, HMAC_MAXIMUM_KEY_SIZE, hmac_opad, HMAC_SHA256_SIZE, MCL_DEBUG, MCL_ERROR_RETURN, MCL_FREE, MCL_INVALID_PARAMETER, MCL_MALLOC, MCL_NULL, MCL_OK, MCL_OUT_OF_MEMORY, MCL_SHA256_CALCULATION_FAIL, security_hash_sha256(), and string_util_memcpy().
Referenced by security_handler_hmac_sha256().