abc/GmSSL
1
0
Fork 0
mirror of https://github.com/guanzhi/GmSSL.git synced 2026-05-06 16:36:16 +08:00
Code Issues Packages Projects Releases Wiki Activity

Add sdfdecrypt command

Browse Source
This commit is contained in:
Zhi Guan
2024-06-09 15:45:40 +08:00
parent 9784bbc380
commit 830c96c5c7
7 changed files with 343 additions and 68 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
tools/gmssl.c
View File

@@ -71,6 +71,7 @@ extern int sdfdigest_main(int argc, char **argv);
extern int sdfexport_main(int argc, char **argv);
extern int sdfsign_main(int argc, char **argv);
extern int sdfencrypt_main(int argc, char **argv);
extern int sdfdecrypt_main(int argc, char **argv);
extern int sdftest_main(int argc, char **argv);
#endif
#ifdef ENABLE_SKF
@@ -135,6 +136,7 @@ static const char *options =
" sdfexport Export SM2 signing public key from SDF device\n"
" sdfsign Generate SM2 signature with SDF internal private key\n"
" sdfencrypt SM2/SM4-CBC hybrid encryption with SDF device\n"
" sdfdecrypt SM2/SM4-CBC hybrid decryption with SDF device\n"
" sdftest Test vendor's SDF library and device\n"
#endif
#ifdef ENABLE_SKF
@@ -295,6 +297,8 @@ int main(int argc, char **argv)
return sdfsign_main(argc, argv);
} else if (!strcmp(*argv, "sdfencrypt")) {
return sdfencrypt_main(argc, argv);
} else if (!strcmp(*argv, "sdfdecrypt")) {
return sdfdecrypt_main(argc, argv);
} else if (!strcmp(*argv, "sdftest")) {
return sdftest_main(argc, argv);
#endif

226
tools/sdfdecrypt.c Executable file
View File

@@ -0,0 +1,226 @@
/*
* 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.
*
* http://www.apache.org/licenses/LICENSE-2.0
*/
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <gmssl/sdf.h>
#include <gmssl/mem.h>
#include <gmssl/hex.h>
#include <gmssl/sm2.h>
#include <gmssl/x509.h>
#include <gmssl/rand.h>
#include <gmssl/error.h>
static const char *usage = "-lib so_path -key num -pass str [-in file] [-out file]";
static const char *options =
"\n"
"Options\n"
"\n"
" -lib so_path Vendor's SDF dynamic library\n"
" -key num Decryption private key index number\n"
" -pass str Password to get the private key access right\n"
" -in file | stdin Input data\n"
" -out file | stdout Output data\n"
"\n"
"Examples\n"
"\n"
" $ gmssl sdfexport -encrypt -key 1 -lib libsoftsdf.so -out sm2encpub.pem\n"
" $ echo 'Secret message' | gmssl sdfencrypt -lib libsoftsdf.so -pubkey sm2encpub.pem -out sdf_ciphertext.bin\n"
" $ gmssl sdfdecrypt -lib libsoftsdf.so -key 1 -pass P@ssw0rd -in sdf_ciphertext.bin\n"
"\n";
int sdfdecrypt_main(int argc, char **argv)
{
int ret = 1;
char *prog = argv[0];
char *lib = NULL;
int key_index = -1;
char *pass = NULL;
char *infile = NULL;
char *outfile = NULL;
FILE *infp = stdin;
FILE *outfp = stdout;
uint8_t iv[16];
uint8_t buf[4096];
size_t inlen;
size_t outlen;
SDF_DEVICE dev;
SDF_KEY key;
SDF_CBC_CTX ctx;
const uint8_t *p;
SM2_CIPHERTEXT ciphertext;
uint8_t *wrappedkey;
size_t wrappedkey_len;
memset(&dev, 0, sizeof(dev));
memset(&key, 0, sizeof(key));
memset(&ctx, 0, sizeof(ctx));
argc--;
argv++;
if (argc < 1) {
fprintf(stderr, "usage: gmssl %s %s\n", prog, usage);
return 1;
}
while (argc > 0) {
if (!strcmp(*argv, "-help")) {
printf("usage: gmssl %s %s\n", prog, usage);
printf("%s\n", options);
ret = 0;
goto end;
goto end;
} else if (!strcmp(*argv, "-lib")) {
if (--argc < 1) goto bad;
lib = *(++argv);
} else if (!strcmp(*argv, "-key")) {
if (--argc < 1) goto bad;
key_index = atoi(*(++argv));
if (key_index < 0) {
fprintf(stderr, "gmssl %s: illegal key index %d\n", prog, key_index);
goto end;
}
} else if (!strcmp(*argv, "-pass")) {
if (--argc < 1) goto bad;
pass = *(++argv);
} else if (!strcmp(*argv, "-in")) {
if (--argc < 1) goto bad;
infile = *(++argv);
if (!(infp = fopen(infile, "rb"))) {
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, "gmssl %s: open '%s' failure : %s\n", prog, outfile, strerror(errno));
goto end;
}
} else {
fprintf(stderr, "gmssl %s: illegal option `%s`\n", prog, *argv);
goto end;
bad:
fprintf(stderr, "gmssl %s: `%s` option value missing\n", prog, *argv);
goto end;
}
argc--;
argv++;
}
// load library and open device
if (!lib) {
fprintf(stderr, "gmssl %s: '-lib' option required\n", prog);
goto end;
}
if (sdf_load_library(lib, NULL) != 1) {
fprintf(stderr, "gmssl %s: load library failure\n", prog);
goto end;
}
if (sdf_open_device(&dev) != 1) {
fprintf(stderr, "gmssl %s: open device failure\n", prog);
goto end;
}
if (key_index < 0) {
fprintf(stderr, "gmssl %s: '-key' option required\n", prog);
goto end;
}
if (!pass) {
fprintf(stderr, "gmssl %s: '-pass' option required\n", prog);
goto end;
}
// read DER(SM2_CIPHERTEXT) and following bytes
if ((inlen = fread(buf, 1, sizeof(buf), infp)) <= 0) {
fprintf(stderr, "gmssl %s: read failure : %s\n", prog, strerror(errno));
goto end;
}
wrappedkey_len = inlen;
p = buf;
if (sm2_ciphertext_from_der(&ciphertext, &p, &inlen) != 1) {
error_print();
goto end;
}
wrappedkey_len -= inlen;
sm2_ciphertext_print(stderr, 0, 0, "Ciphertext", buf, wrappedkey_len);
// read IV
if (inlen >= 16) {
memcpy(iv, p, 16);
p += 16;
inlen -= 16;
} else {
memcpy(iv, p, inlen);
if (fread(iv + inlen, 1, 16 - inlen, infp) != 16 - inlen) {
error_print();
goto end;
}
inlen = 0;
}
// import key
if (sdf_import_key(&dev, key_index, pass, buf, wrappedkey_len, &key) != 1) {
error_print();
return -1;
}
// encrypt and output ciphertext
if (sdf_cbc_decrypt_init(&ctx, &key, iv) != 1) {
error_print();
goto end;
}
if (inlen) {
if (sdf_cbc_decrypt_update(&ctx, p, inlen, buf, &outlen) != 1) {
error_print();
goto end;
}
}
while ((inlen = fread(buf, 1, sizeof(buf), infp)) > 0) {
if (sdf_cbc_decrypt_update(&ctx, buf, inlen, buf, &outlen) != 1) {
error_print();
goto end;
}
if (fwrite(buf, 1, outlen, outfp) != outlen) {
fprintf(stderr, "gmssl %s: output failure : %s\n", prog, strerror(errno));
goto end;
}
}
if (sdf_cbc_decrypt_finish(&ctx, buf, &outlen) != 1) {
error_print();
goto end;
}
if (fwrite(buf, 1, outlen, outfp) != outlen) {
fprintf(stderr, "gmssl %s: output failure : %s\n", prog, strerror(errno));
goto end;
}
ret = 0;
end:
(void)sdf_destroy_key(&key);
(void)sdf_close_device(&dev);
(void)sdf_unload_library();
gmssl_secure_clear(iv, sizeof(iv));
gmssl_secure_clear(&ctx, sizeof(ctx));
if (infile && infp) fclose(infp);
if (outfile && outfp) fclose(outfp);
return ret;
}

3
tools/sdfencrypt.c
View File

@@ -35,9 +35,8 @@ static const char *options =
"\n"
"Examples\n"
"\n"
" $ TEXT=`gmssl rand -outlen 20 -hex`\n"
" $ gmssl sdfexport -encrypt -key 1 -lib libsoftsdf.so -out sm2encpub.pem\n"
" $ echo -n $TEXT | gmssl sdfencrypt -lib libsoftsdf.so -pubkey sm2encpub.pem -out sdf_ciphertext.bin\n"
" $ echo 'Secret message' | gmssl sdfencrypt -lib libsoftsdf.so -pubkey sm2encpub.pem -out sdf_ciphertext.bin\n"
" $ gmssl sdfdecrypt -lib libsoftsdf.so -key 1 -pass P@ssw0rd -in sdf_ciphertext.bin\n"
"\n";

10
tools/sdfsign.c
View File

@@ -74,16 +74,6 @@ int sdfsign_main(int argc, char **argv)
} else if (!strcmp(*argv, "-lib")) {
if (--argc < 1) goto bad;
lib = *(++argv);
} else if (!strcmp(*argv, "-key")) {
if (--argc < 1) goto bad;
key_index = atoi(*(++argv));
if (key_index < 0) {
fprintf(stderr, "gmssl %s: illegal key index %d\n", prog, key_index);
goto end;
}
} else if (!strcmp(*argv, "-pass")) {
if (--argc < 1) goto bad;
pass = *(++argv);
} else if (!strcmp(*argv, "-id")) {
if (--argc < 1) goto bad;
id = *(++argv);