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https://github.com/guanzhi/GmSSL.git
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110 lines
3.3 KiB
C
110 lines
3.3 KiB
C
/* demo/gmssl/sm3evp.c */
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/* ====================================================================
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* Copyright (c) 2014 - 2015 The GmSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the GmSSL Project.
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* (http://gmssl.org/)"
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*
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* 4. The name "GmSSL Project" must not be used to endorse or promote
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* products derived from this software without prior written
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* permission. For written permission, please contact
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* guanzhi1980@gmail.com.
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*
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* 5. Products derived from this software may not be called "GmSSL"
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* nor may "GmSSL" appear in their names without prior written
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* permission of the GmSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the GmSSL Project
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* (http://gmssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE GmSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE GmSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <openssl/evp.h>
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#include <openssl/err.h>
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int main(int argc, char **argv)
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{
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int ret = -1;
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FILE *fp = stdin;
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unsigned char buf[1024];
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size_t len;
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const EVP_MD *md;
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EVP_MD_CTX mdctx;
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unsigned char dgst[EVP_MAX_MD_SIZE];
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unsigned int dgstlen, i;
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if (argc == 2) {
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if (!(fp = fopen(argv[1], "r"))) {
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fprintf(stderr, "open file %s failed\n", argv[1]);
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return -1;
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}
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}
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OpenSSL_add_all_digests();
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if (!(md = EVP_get_digestbyname("sm3"))) {
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ERR_print_errors_fp(stderr);
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goto end;
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}
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if (!EVP_DigestInit(&mdctx, md)) {
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ERR_print_errors_fp(stderr);
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goto end;
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}
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while ((len = fread(buf, 1, sizeof(buf), fp))) {
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if (!EVP_DigestUpdate(&mdctx, buf, len)) {
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ERR_print_errors_fp(stderr);
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goto end;
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}
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}
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if (!EVP_DigestFinal(&mdctx, dgst, &dgstlen)) {
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ERR_print_errors_fp(stderr);
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goto end;
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}
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for (i = 0; i < dgstlen; i++) {
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printf("%02x", dgst[i]);
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}
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printf("\n");
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ret = 0;
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end:
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fclose(fp);
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EVP_cleanup();
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return ret;
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}
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