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Add examples to tools

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This commit is contained in:
Zhi Guan
2024-05-20 22:55:58 +08:00
parent 926e063353
commit 8a52a2137d
5 changed files with 162 additions and 84 deletions
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51
tools/sm2sign.c
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@@ -1,5 +1,5 @@
/*
* Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
* Copyright 2014-2024 The GmSSL Project. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
@@ -16,7 +16,25 @@
#include <gmssl/mem.h>
static const char *options = "-key pem -pass str [-id str] [-in file] [-out file]";
static const char *usage = "-key pem -pass str [-id str] [-in file] [-out file]";
static const char *options =
"\n"
"Options\n"
"\n"
" -key pem Signing private key file in PEM format\n"
" -pass str Password to open the private key\n"
" -id str Signer's identity string, '1234567812345678' by default\n"
" -in file | stdin To be signed file or data\n"
" -out file | stdout Output signature in binary DER encoding\n"
"\n"
"Examples\n"
"\n"
" $ gmssl sm2keygen -pass P@ssw0rd -out sm2.pem -pubout sm2pub.pem\n"
" $ echo -n 'message to be signed' | gmssl sm2sign -key sm2.pem -pass P@ssw0rd -out sm2.sig\n"
" $ echo -n 'message to be signed' | gmssl sm2verify -pubkey sm2pub.pem -sig sm2.sig\n"
"\n";
int sm2sign_main(int argc, char **argv)
{
@@ -41,20 +59,21 @@ int sm2sign_main(int argc, char **argv)
argv++;
if (argc < 1) {
fprintf(stderr, "usage: %s %s\n", prog, options);
fprintf(stderr, "usage: gmssl %s %s\n", prog, usage);
return 1;
}
while (argc > 0) {
if (!strcmp(*argv, "-help")) {
printf("usage: %s %s\n", prog, options);
printf("usage: gmssl %s %s\n", prog, usage);
printf("%s\n", options);
ret = 0;
goto end;
} else if (!strcmp(*argv, "-key")) {
if (--argc < 1) goto bad;
keyfile = *(++argv);
if (!(keyfp = fopen(keyfile, "rb"))) {
fprintf(stderr, "%s: open '%s' failure : %s\n", prog, keyfile, strerror(errno));
fprintf(stderr, "gmssl %s: open '%s' failure : %s\n", prog, keyfile, strerror(errno));
goto end;
}
} else if (!strcmp(*argv, "-pass")) {
@@ -67,21 +86,21 @@ int sm2sign_main(int argc, char **argv)
if (--argc < 1) goto bad;
infile = *(++argv);
if (!(infp = fopen(infile, "rb"))) {
fprintf(stderr, "%s: open '%s' failure : %s\n", prog, infile, strerror(errno));
fprintf(stderr, "gmssl %s: open '%s' failure : %s\n", prog, infile, strerror(errno));
goto end;
}
} else if (!strcmp(*argv, "-out")) {
if (--argc < 1) goto bad;
outfile = *(++argv);
if (!(outfp = fopen(outfile, "wb"))) {
fprintf(stderr, "%s: open '%s' failure : %s\n", prog, outfile, strerror(errno));
fprintf(stderr, "gmssl %s: open '%s' failure : %s\n", prog, outfile, strerror(errno));
goto end;
}
} else {
fprintf(stderr, "%s: illegal option '%s'\n", prog, *argv);
fprintf(stderr, "gmssl %s: illegal option '%s'\n", prog, *argv);
goto end;
bad:
fprintf(stderr, "%s: '%s' option value missing\n", prog, *argv);
fprintf(stderr, "gmssl %s: '%s' option value missing\n", prog, *argv);
goto end;
}
@@ -90,34 +109,34 @@ bad:
}
if (!keyfile) {
fprintf(stderr, "%s: '-key' option required\n", prog);
fprintf(stderr, "gmssl %s: '-key' option required\n", prog);
goto end;
}
if (!pass) {
fprintf(stderr, "%s: '-pass' option required\n", prog);
fprintf(stderr, "gmssl %s: '-pass' option required\n", prog);
goto end;
}
if (sm2_private_key_info_decrypt_from_pem(&key, pass, keyfp) != 1) {
fprintf(stderr, "%s: private key decryption failure\n", prog);
fprintf(stderr, "gmssl %s: private key decryption failure\n", prog);
goto end;
}
if (sm2_sign_init(&sign_ctx, &key, id, strlen(id)) != 1) {
fprintf(stderr, "%s: inner error\n", prog);
fprintf(stderr, "gmssl %s: inner error\n", prog);
goto end;
}
while ((len = fread(buf, 1, sizeof(buf), infp)) > 0) {
if (sm2_sign_update(&sign_ctx, buf, len) != 1) {
fprintf(stderr, "%s: inner error\n", prog);
fprintf(stderr, "gmssl %s: inner error\n", prog);
goto end;
}
}
if (sm2_sign_finish(&sign_ctx, sig, &siglen) != 1) {
fprintf(stderr, "%s: inner error\n", prog);
fprintf(stderr, "gmssl %s: inner error\n", prog);
goto end;
}
if (fwrite(sig, 1, siglen, outfp) != siglen) {
fprintf(stderr, "%s: output signature failed : %s\n", prog, strerror(errno));
fprintf(stderr, "gmssl %s: output signature failed : %s\n", prog, strerror(errno));
goto end;
}
ret = 0;