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Update some demos

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Zhi Guan
2018-10-31 11:03:21 +08:00
parent 9eadfd4cb6
commit 676076278d
37 changed files with 2277 additions and 141 deletions
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demos/sm3/sm3evp.c Executable file
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/* ====================================================================
* Copyright (c) 2014 - 2018 The GmSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the GmSSL Project.
* (http://gmssl.org/)"
*
* 4. The name "GmSSL Project" must not be used to endorse or promote
* products derived from this software without prior written
* permission. For written permission, please contact
* guanzhi1980@gmail.com.
*
* 5. Products derived from this software may not be called "GmSSL"
* nor may "GmSSL" appear in their names without prior written
* permission of the GmSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the GmSSL Project
* (http://gmssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE GmSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE GmSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*/
/*
* This SM3 demo use the abstract EVP API
*/
#include <stdio.h>
#include <stdlib.h>
#include <openssl/evp.h>
#include <openssl/err.h>
#include <openssl/is_gmssl.h>
int main(int argc, char **argv)
{
int ret = -1;
FILE *fp = stdin;
unsigned char buf[1024];
size_t len;
const EVP_MD *md = EVP_sm3();
EVP_MD_CTX *mdctx = NULL;
unsigned char dgst[EVP_MAX_MD_SIZE];
unsigned int dgstlen, i;
/* hash a file when argv[1] exist, or from stdin */
if (argc == 2) {
if (!(fp = fopen(argv[1], "r"))) {
fprintf(stderr, "open file %s failed\n", argv[1]);
return -1;
}
}
/* get the SM3 EVP_MD object by name */
if (!(md = EVP_get_digestbyname("sm3"))) {
ERR_print_errors_fp(stderr);
goto end;
}
/* create message digest (MD) context */
if (!(mdctx = EVP_MD_CTX_new())) {
ERR_print_errors_fp(stderr);
goto end;
}
/* set digest method, i.e. sm3 */
if (!EVP_DigestInit(mdctx, md)) {
ERR_print_errors_fp(stderr);
goto end;
}
/* update data to be digested */
while ((len = fread(buf, 1, sizeof(buf), fp))) {
if (!EVP_DigestUpdate(mdctx, buf, len)) {
ERR_print_errors_fp(stderr);
goto end;
}
}
/* get the digest/hash value */
if (!EVP_DigestFinal(mdctx, dgst, &dgstlen)) {
ERR_print_errors_fp(stderr);
goto end;
}
for (i = 0; i < dgstlen; i++) {
printf("%02X", dgst[i]);
}
printf("\n");
ret = 0;
end:
fclose(fp);
EVP_MD_CTX_free(mdctx);
return ret;
}