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/sm4.h>
14 #include <gmssl/rand.h>
15
16
main(void)17 int main(void)
18 {
19 SM4_CTR_CTX cbc_ctx;
20 unsigned char key[16] = {
21 0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,
22 0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,
23 };
24 unsigned char ctr[16] = {
25 0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,
26 0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,
27 };
28 unsigned char inbuf[1024];
29 unsigned char outbuf[1024 + 32];
30 ssize_t inlen;
31 size_t outlen;
32
33 if (sm4_ctr_encrypt_init(&cbc_ctx, key, ctr) != 1) {
34 fprintf(stderr, "%s %d: error\n", __FILE__, __LINE__);
35 return 1;
36 }
37 while ((inlen = fread(inbuf, 1, sizeof(inbuf), stdin)) > 0) {
38 if (sm4_ctr_encrypt_update(&cbc_ctx, inbuf, inlen, outbuf, &outlen) != 1) {
39 fprintf(stderr, "%s %d: error\n", __FILE__, __LINE__);
40 return 1;
41 }
42 fwrite(outbuf, 1, outlen, stdout);
43 }
44 if (sm4_ctr_encrypt_finish(&cbc_ctx, outbuf, &outlen) != 1) {
45 fprintf(stderr, "%s %d: error\n", __FILE__, __LINE__);
46 return 1;
47 }
48 fwrite(outbuf, 1, outlen, stdout);
49
50 return 0;
51 }
52