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_KEY sm4_key;
20 unsigned char key[16];
21 unsigned char iv[16];
22 unsigned char mbuf[32] = {
23 0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,
24 0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,
25 0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,
26 0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,
27 };
28 unsigned char cbuf[32] = {0};
29 unsigned char pbuf[32] = {0};
30 size_t mlen1 = 20, mlen2 = 16;
31 size_t clen1, clen2;
32 size_t plen1, plen2;
33 int i;
34
35 rand_bytes(key, sizeof(key));
36 rand_bytes(iv, sizeof(iv));
37
38 printf("key: ");
39 for (i = 0; i < sizeof(key); i++) {
40 printf("%02X", key[i]);
41 }
42 printf("\n");
43
44 printf("iv: ");
45 for (i = 0; i < sizeof(iv); i++) {
46 printf("%02X", iv[i]);
47 }
48 printf("\n");
49
50
51 printf("sm4_cbc_pading encrypt %zu bytes\n", mlen1);
52
53 printf("plaintext: ");
54 for (i = 0; i < mlen1; i++) {
55 printf("%02X", mbuf[i]);
56 }
57 printf("\n");
58
59 sm4_set_encrypt_key(&sm4_key, key);
60 sm4_cbc_padding_encrypt(&sm4_key, iv, mbuf, mlen1, cbuf, &clen1);
61
62 printf("ciphertext: ");
63 for (i = 0; i < clen1; i++) {
64 printf("%02X", cbuf[i]);
65 }
66 printf("\n");
67
68 sm4_set_decrypt_key(&sm4_key, key);
69 sm4_cbc_padding_decrypt(&sm4_key, iv, cbuf, clen1, pbuf, &plen1);
70
71 printf("decrypted: ");
72 for (i = 0; i < plen1; i++) {
73 printf("%02X", pbuf[i]);
74 }
75 printf("\n");
76
77 printf("sm4_cbc_pading encrypt %zu bytes\n", mlen2);
78
79 printf("plaintext: ");
80 for (i = 0; i < mlen2; i++) {
81 printf("%02X", mbuf[i]);
82 }
83 printf("\n");
84
85 sm4_set_encrypt_key(&sm4_key, key);
86 sm4_cbc_padding_encrypt(&sm4_key, iv, mbuf, mlen2, cbuf, &clen2);
87
88 printf("ciphertext: ");
89 for (i = 0; i < clen2; i++) {
90 printf("%02X", cbuf[i]);
91 }
92 printf("\n");
93
94 sm4_set_decrypt_key(&sm4_key, key);
95 sm4_cbc_padding_decrypt(&sm4_key, iv, cbuf, clen2, pbuf, &plen2);
96
97 printf("decrypted: ");
98 for (i = 0; i < plen2; i++) {
99 printf("%02X", pbuf[i]);
100 }
101 printf("\n");
102
103
104 return 0;
105 }
106