abc/GmSSL
1
0
Fork 0
mirror of https://github.com/guanzhi/GmSSL.git synced 2026-05-25 09:46:28 +08:00
Code Issues Packages Projects Releases Wiki Activity

Add examples to tools

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

51
tools/sm2decrypt.c
View File

@@ -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 +16,23 @@
#include <gmssl/sm2.h>
static const char *options = "-key pem -pass str [-in file] [-out file]";
static const char *usage = "-key pem -pass str [-in file] [-out file]";
static const char *options =
"\n"
"Options\n"
"\n"
" -key pem Decryption private key file in PEM format\n"
" -pass str Password to open the private key\n"
" -in file | stdin Input ciphertext in binary DER-encoding\n"
" -in file | stdout Output decrypted data\n"
"\n"
"Examples\n"
"\n"
" $ gmssl sm2keygen -pass P@ssw0rd -out sm2.pem -pubout sm2pub.pem\n"
" $ echo 'Secret message' | gmssl sm2encrypt -pubkey sm2pub.pem -out sm2.der\n"
" $ gmssl sm2decrypt -key sm2.pem -pass P@ssw0rd -in sm2.der\n"
"\n";
int sm2decrypt_main(int argc, char **argv)
{
@@ -39,20 +55,21 @@ int sm2decrypt_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")) {
@@ -62,21 +79,21 @@ int sm2decrypt_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;
}
@@ -85,38 +102,38 @@ 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 ((inlen = fread(inbuf, 1, sizeof(inbuf), infp)) <= 0) {
fprintf(stderr, "%s: read input failed : %s\n", prog, strerror(errno));
fprintf(stderr, "gmssl %s: read input failed : %s\n", prog, strerror(errno));
goto end;
}
if (sm2_decrypt_init(&ctx) != 1) {
fprintf(stderr, "%s: sm2_decrypt_init failed\n", prog);
fprintf(stderr, "gmssl %s: sm2_decrypt_init failed\n", prog);
goto end;
}
if (sm2_decrypt_update(&ctx, inbuf, inlen) != 1) {
fprintf(stderr, "%s: sm2_decyrpt_update failed\n", prog);
fprintf(stderr, "gmssl %s: sm2_decyrpt_update failed\n", prog);
goto end;
}
if (sm2_decrypt_finish(&ctx, &key, outbuf, &outlen) != 1) {
fprintf(stderr, "%s: decryption failure\n", prog);
fprintf(stderr, "gmssl %s: decryption failure\n", prog);
goto end;
}
if (outlen != fwrite(outbuf, 1, outlen, outfp)) {
fprintf(stderr, "%s: output plaintext failed : %s\n", prog, strerror(errno));
fprintf(stderr, "gmssl %s: output plaintext failed : %s\n", prog, strerror(errno));
goto end;
}
ret = 0;