mirror of
https://github.com/guanzhi/GmSSL.git
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50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
/*
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* Copyright 2014-2021 The GmSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <gmssl/sm3.h>
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int main(int argc, char **argv)
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{
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char *prog = argv[0];
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SM3_CTX ctx;
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uint8_t dgst[32];
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uint8_t buf[4096];
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ssize_t len;
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int i;
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if (argc > 1) {
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fprintf(stderr, "usage: echo -n \"abc\" | %s\n", prog);
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fprintf(stderr, " %s < path/to/file\n", prog);
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return 0;
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}
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sm3_init(&ctx);
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while ((len = fread(buf, 1, sizeof(buf), stdin)) > 0) {
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sm3_update(&ctx, buf, len);
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}
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sm3_finish(&ctx, dgst);
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for (i = 0; i < sizeof(dgst); i++) {
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printf("%02x", dgst[i]);
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}
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printf("\n");
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return 0;
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}
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