mirror of
https://github.com/guanzhi/GmSSL.git
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123 lines
2.5 KiB
C
123 lines
2.5 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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#include <gmssl/sm2.h>
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#include <gmssl/error.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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char *pubkeyfile = NULL;
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char *infile = NULL;
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char *id = NULL;
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FILE *pubkeyfp = NULL;
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FILE *infp = stdin;
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SM3_CTX sm3_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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argc--;
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argv++;
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while (argc > 0) {
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if (!strcmp(*argv, "-help")) {
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help:
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fprintf(stderr, "usage: %s [-pubkey pem [-id str]] [-in file]\n", prog);
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fprintf(stderr, "usage: echo -n \"abc\" | %s\n", prog);
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return -1;
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} else if (!strcmp(*argv, "-pubkey")) {
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if (--argc < 1) goto bad;
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pubkeyfile = *(++argv);
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} else if (!strcmp(*argv, "-id")) {
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if (--argc < 1) goto bad;
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id = *(++argv);
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} else if (!strcmp(*argv, "-in")) {
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if (--argc < 1) goto bad;
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infile = *(++argv);
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} else {
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fprintf(stderr, "%s: illegal option '%s'\n", prog, *argv);
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goto help;
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}
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argc--;
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argv++;
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}
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sm3_init(&sm3_ctx);
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if (pubkeyfile) {
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SM2_KEY sm2_key;
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uint8_t z[32];
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if (!(pubkeyfp = fopen(pubkeyfile, "r"))) {
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error_print();
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return -1;
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}
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if (sm2_public_key_info_from_pem(&sm2_key, pubkeyfp) != 1) {
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error_print();
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return -1;
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}
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if (!id) {
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id = SM2_DEFAULT_ID;
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}
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sm2_compute_z(z, (SM2_POINT *)&sm2_key, id);
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sm3_update(&sm3_ctx, z, sizeof(z));
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} else {
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if (id) {
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fprintf(stderr, "%s: option '-id' must be with '-pubkey'\n", prog);
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goto help;
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}
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}
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if (infile) {
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if (!(infp = fopen(infile, "r"))) {
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error_print();
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return -1;
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}
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}
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while ((len = fread(buf, 1, sizeof(buf), infp)) > 0) {
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sm3_update(&sm3_ctx, buf, len);
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}
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sm3_finish(&sm3_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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if (infile) {
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fclose(infp);
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}
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return 0;
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bad:
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fprintf(stderr, "%s: '%s' option value required\n", prog, *argv);
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return -1;
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}
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