Files
GmSSL/demos/src/sm4_cbc_mac_demo.c
Zhi Guan 2c988b008b Update demos
To build demos, run
`cmake .. -DENABLE_DEMOS=ON`
2023-12-16 11:42:10 +08:00

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C

/*
* Copyright 2014-2023 The GmSSL Project. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
*
* http://www.apache.org/licenses/LICENSE-2.0
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <gmssl/sm4_cbc_mac.h>
int main(int argc, char **argv)
{
SM4_CBC_MAC_CTX ctx;
uint8_t key[16] = {0};
uint8_t data[16 * 3] = {0};
uint8_t mac[16] = {0};
size_t i;
if (sizeof(data) % SM4_BLOCK_SIZE != 0) {
fprintf(stderr, "CBC_MAC data length error\n");
goto err;
}
sm4_cbc_mac_init(&ctx, key);
sm4_cbc_mac_update(&ctx, data, sizeof(data));
sm4_cbc_mac_finish(&ctx, mac);
printf("cbc_mac = ");
for (i = 0; i < sizeof(mac); i++) {
printf("%02x", mac[i]);
}
printf("\n");
err:
return 0;
}