mirror of
https://github.com/guanzhi/GmSSL.git
synced 2026-05-06 16:36:16 +08:00
63 lines
2.0 KiB
C
63 lines
2.0 KiB
C
/*
|
|
* Copyright 2022 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/sm2.h>
|
|
#include <gmssl/error.h>
|
|
|
|
|
|
int main(void)
|
|
{
|
|
SM2_KEY sm2_key;
|
|
SM2_KEY pub_key;
|
|
SM2_SIGN_CTX sign_ctx;
|
|
unsigned char dgst[32];
|
|
unsigned char sig[SM2_MAX_SIGNATURE_SIZE];
|
|
size_t siglen;
|
|
int ret;
|
|
|
|
sm2_key_generate(&sm2_key);
|
|
|
|
memcpy(&pub_key, &sm2_key, sizeof(SM2_POINT));
|
|
|
|
// sign without signer ID (and Z value)
|
|
sm2_sign_init(&sign_ctx, &sm2_key, NULL, 0);
|
|
sm2_sign_update(&sign_ctx, (unsigned char *)"hello ", strlen("hello "));
|
|
sm2_sign_update(&sign_ctx, (unsigned char *)"world", strlen("world"));
|
|
sm2_sign_finish(&sign_ctx, sig, &siglen);
|
|
format_bytes(stdout, 0, 0, "signature", sig, siglen);
|
|
|
|
// digest and verify
|
|
sm3_digest((unsigned char *)"hello world", strlen("hello world"), dgst);
|
|
ret = sm2_verify(&pub_key, dgst, sig, siglen);
|
|
printf("verify result: %s\n", ret == 1 ? "success" : "failure");
|
|
|
|
// use verify update API
|
|
sm2_verify_init(&sign_ctx, &pub_key, NULL, 0);
|
|
sm2_verify_update(&sign_ctx, (unsigned char *)"hello world", strlen("hello world"));
|
|
ret = sm2_verify_finish(&sign_ctx, sig, siglen);
|
|
printf("verify result: %s\n", ret == 1 ? "success" : "failure");
|
|
|
|
// sign use default signer ID
|
|
sm2_sign_init(&sign_ctx, &sm2_key, SM2_DEFAULT_ID, SM2_DEFAULT_ID_LENGTH);
|
|
sm2_sign_update(&sign_ctx, (unsigned char *)"hello ", strlen("hello "));
|
|
sm2_sign_update(&sign_ctx, (unsigned char *)"world", strlen("world"));
|
|
sm2_sign_finish(&sign_ctx, sig, &siglen);
|
|
format_bytes(stdout, 0, 0, "signature", sig, siglen);
|
|
|
|
sm2_verify_init(&sign_ctx, &pub_key, SM2_DEFAULT_ID, SM2_DEFAULT_ID_LENGTH);
|
|
sm2_verify_update(&sign_ctx, (unsigned char *)"hello world", strlen("hello world"));
|
|
ret = sm2_verify_finish(&sign_ctx, sig, siglen);
|
|
printf("verify result: %s\n", ret == 1 ? "success" : "failure");
|
|
|
|
return 0;
|
|
}
|