1 /*
2 * Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
3 *
4 * Licensed under the Apache License, Version 2.0 (the License); you may
5 * not use this file except in compliance with the License.
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 */
9
10 #include <stdio.h>
11 #include <string.h>
12 #include <stdlib.h>
13 #include <gmssl/sm3.h>
14
15
main(void)16 int main(void)
17 {
18 SM3_KDF_CTX kdf_ctx;
19 unsigned char key[16] = {0};
20 unsigned char raw[32] = {
21 0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,
22 0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,
23 };
24 int i;
25
26 sm3_kdf_init(&kdf_ctx, sizeof(key));
27 sm3_kdf_update(&kdf_ctx, raw, sizeof(raw));
28 sm3_kdf_finish(&kdf_ctx, key);
29
30 printf("key: ");
31 for (i = 0; i < sizeof(key); i++) {
32 printf("%02X", key[i]);
33 }
34 printf("\n");
35
36 return 0;
37 }
38