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/sm2.h>
14 #include <gmssl/error.h>
15
16
main(void)17 int main(void)
18 {
19 SM2_KEY sm2_key;
20 SM2_KEY pub_key;
21 unsigned char plaintext[SM2_MAX_PLAINTEXT_SIZE];
22 unsigned char ciphertext[SM2_MAX_CIPHERTEXT_SIZE];
23 size_t len;
24
25 sm2_key_generate(&sm2_key);
26 memcpy(&pub_key, &sm2_key, sizeof(SM2_POINT));
27
28 sm2_encrypt(&pub_key, (uint8_t *)"hello world", strlen("hello world"), ciphertext, &len);
29 format_bytes(stdout, 0, 0, "ciphertext", ciphertext, len);
30
31 if (sm2_decrypt(&sm2_key, ciphertext, len, plaintext, &len) != 1) {
32 fprintf(stderr, "error\n");
33 return 1;
34 }
35 plaintext[len] = 0;
36 printf("plaintext: %s\n", plaintext);
37
38 return 0;
39 }
40