1 /*
2 * Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
3 *
4 * Licensed under the Apache License, Version 2.0 (the License); you may
5 * not use this file except in compliance with the License.
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 */
9
10
11 #include <stdio.h>
12 #include <string.h>
13 #include <stdlib.h>
14 #include <gmssl/mem.h>
15 #include <gmssl/sm9.h>
16 #include <gmssl/error.h>
17
18
19 static const char *options = "[-in file] -key file -pass str [-out file]";
20
21
sm9sign_main(int argc,char ** argv)22 int sm9sign_main(int argc, char **argv)
23 {
24 int ret = 1;
25 char *prog = argv[0];
26 char *infile = NULL;
27 char *keyfile = NULL;
28 char *pass = NULL;
29 char *outfile = NULL;
30 FILE *infp = stdin;
31 FILE *keyfp = NULL;
32 FILE *outfp = stdout;
33 SM9_SIGN_KEY key;
34 SM9_SIGN_CTX ctx;
35 uint8_t buf[4096];
36 ssize_t len;
37 uint8_t sig[SM9_SIGNATURE_SIZE];
38 size_t siglen;
39
40 argc--;
41 argv++;
42
43 if (argc < 1) {
44 fprintf(stderr, "usage: %s %s\n", prog, options);
45 return 1;
46 }
47
48 while (argc > 0) {
49 if (!strcmp(*argv, "-help")) {
50 fprintf(stdout, "usage: %s %s\n", prog, options);
51 return 0;
52 } else if (!strcmp(*argv, "-in")) {
53 if (--argc < 1) goto bad;
54 infile = *(++argv);
55 if (!(infp = fopen(infile, "r"))) {
56 error_print();
57 goto end;
58 }
59 } else if (!strcmp(*argv, "-key")) {
60 if (--argc < 1) goto bad;
61 keyfile = *(++argv);
62 if (!(keyfp = fopen(keyfile, "r"))) {
63 error_print();
64 goto end;
65 }
66 } else if (!strcmp(*argv, "-pass")) {
67 if (--argc < 1) goto bad;
68 pass = *(++argv);
69 } else if (!strcmp(*argv, "-out")) {
70 if (--argc < 1) goto bad;
71 outfile = *(++argv);
72 if (!(outfp = fopen(outfile, "w"))) {
73 error_print();
74 goto end;
75 }
76 } else {
77 bad:
78 fprintf(stderr, "%s: illegal option '%s'\n", prog, *argv);
79 return 1;
80 }
81
82 argc--;
83 argv++;
84 }
85
86 if (!keyfile || !pass) {
87 error_print();
88 goto end;
89 }
90
91 if (sm9_sign_key_info_decrypt_from_pem(&key, pass, keyfp) != 1) {
92 error_print();
93 return -1;
94 }
95
96 if (sm9_sign_init(&ctx) != 1) {
97 error_print();
98 goto end;
99 }
100 while ((len = fread(buf, 1, sizeof(buf), infp)) > 0) {
101 if (sm9_sign_update(&ctx, buf, len) != 1) {
102 error_print();
103 goto end;
104 }
105 }
106 if (sm9_sign_finish(&ctx, &key, sig, &siglen) != 1) {
107 error_print();
108 goto end;
109 }
110
111 if (siglen != fwrite(sig, 1, siglen, outfp)) {
112 error_print();
113 goto end;
114 }
115
116
117
118 ret = 0;
119
120 end:
121 gmssl_secure_clear(&key, sizeof(key));
122 gmssl_secure_clear(&ctx, sizeof(ctx));
123 gmssl_secure_clear(buf, sizeof(buf));
124 if (infile && infp) fclose(infp);
125 if (outfile && outfp) fclose(outfp);
126 return ret;
127 }
128