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Add sdfdecrypt command

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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
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2
CMakeLists.txt
View File

@@ -552,7 +552,7 @@ if (ENABLE_SDF)
src/sdf/sdf_meth.c
src/sdf/sdf_ext.c
src/sdf/sdf_sansec.c)
list(APPEND tools tools/sdfinfo.c tools/sdfdigest.c tools/sdfexport.c tools/sdfsign.c tools/sdfencrypt.c tools/sdftest.c)
list(APPEND tools tools/sdfinfo.c tools/sdfdigest.c tools/sdfexport.c tools/sdfsign.c tools/sdfencrypt.c tools/sdfdecrypt.c tools/sdftest.c)
endif()

1
include/gmssl/sdf.h
View File

@@ -85,6 +85,7 @@ int sdf_sign_init(SDF_SIGN_CTX *ctx, const SDF_SIGN_KEY *key, const char *id, si
int sdf_sign_update(SDF_SIGN_CTX *ctx, const uint8_t *data, size_t datalen);
int sdf_sign_finish(SDF_SIGN_CTX *ctx, uint8_t *sig, size_t *siglen);
int sdf_sign_reset(SDF_SIGN_CTX *ctx);
int sdf_sm2_decrypt(const SDF_SIGN_KEY *key, const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen);
int sdf_release_sign_key(SDF_SIGN_KEY *key);
int sdf_close_device(SDF_DEVICE *dev);
void sdf_unload_library(void);

165
src/sdf/sdf.c
View File

@@ -19,20 +19,25 @@
#include "sdf_ext.h"
static int SDF_ECCrefPublicKey_to_SM2_Z256_POINT(const ECCrefPublicKey *ref, SM2_Z256_POINT *z256_point)
{
static const uint8_t zeros[ECCref_MAX_LEN - 32] = {0};
SM2_POINT point;
static const uint8_t zeros[ECCref_MAX_LEN - 32] = {0};
if (ref->bits != 256) {
error_print();
return -1;
}
if (memcmp(ref->x, zeros, sizeof(zeros)) != 0) {
error_print();
return -1;
}
if (memcmp(ref->y, zeros, sizeof(zeros)) != 0) {
static void ECCrefPublicKey_from_SM2_Z256_POINT(ECCrefPublicKey *ref, const SM2_Z256_POINT *z256_point)
{
SM2_POINT point;
sm2_z256_point_to_bytes(z256_point, (uint8_t *)&point);
ref->bits = 256;
memcpy(ref->x, zeros, sizeof(zeros));
memcpy(ref->x + sizeof(zeros), point.x, 32);
memcpy(ref->y, zeros, sizeof(zeros));
memcpy(ref->y + sizeof(zeros), point.y, 32);
}
static int ECCrefPublicKey_to_SM2_Z256_POINT(const ECCrefPublicKey *ref, SM2_Z256_POINT *z256_point)
{
SM2_POINT point;
if (ref->bits != 256
|| memcmp(ref->x, zeros, sizeof(zeros)) != 0
|| memcmp(ref->y, zeros, sizeof(zeros)) != 0) {
error_print();
return -1;
}
@@ -42,26 +47,60 @@ static int SDF_ECCrefPublicKey_to_SM2_Z256_POINT(const ECCrefPublicKey *ref, SM2
error_print();
return -1;
}
return SDR_OK;
return 1;
}
static int SDF_ECCSignature_to_SM2_SIGNATURE(const ECCSignature *ref, SM2_SIGNATURE *sig)
static void ECCSignature_from_SM2_SIGNATURE(ECCSignature *ref, const SM2_SIGNATURE *sig)
{
static const uint8_t zeros[ECCref_MAX_LEN - 32] = {0};
memcpy(ref->r, zeros, sizeof(zeros));
memcpy(ref->r + sizeof(zeros), sig->r, 32);
memcpy(ref->s, zeros, sizeof(zeros));
memcpy(ref->s + sizeof(zeros), sig->s, 32);
}
if (memcmp(ref->r, zeros, sizeof(zeros)) != 0) {
error_print();
return -1;
}
if (memcmp(ref->s, zeros, sizeof(zeros)) != 0) {
static int ECCSignature_to_SM2_SIGNATURE(const ECCSignature *ref, SM2_SIGNATURE *sig)
{
if (memcmp(ref->r, zeros, sizeof(zeros)) != 0
|| memcmp(ref->s, zeros, sizeof(zeros)) != 0) {
error_print();
return -1;
}
memcpy(sig->r, ref->r + sizeof(zeros), 32);
memcpy(sig->s, ref->s + sizeof(zeros), 32);
return SDR_OK;
return 1;
}
static void ECCCipher_from_SM2_CIPHERTEXT(ECCCipher *eccCipher, const SM2_CIPHERTEXT *ciphertext)
{
memcpy(eccCipher->x, zeros, sizeof(zeros));
memcpy(eccCipher->x + sizeof(zeros), ciphertext->point.x, 32);
memcpy(eccCipher->y, zeros, sizeof(zeros));
memcpy(eccCipher->y + sizeof(zeros), ciphertext->point.y, 32);
memcpy(eccCipher->M, ciphertext->hash, 32);
memcpy(eccCipher->C, ciphertext->ciphertext, ciphertext->ciphertext_size);
eccCipher->L = ciphertext->ciphertext_size;
}
static int ECCCipher_to_SM2_CIPHERTEXT(const ECCCipher *eccCipher, SM2_CIPHERTEXT *ciphertext)
{
static const uint8_t zeros[ECCref_MAX_LEN - 32] = {0};
if (eccCipher->L > SM2_MAX_PLAINTEXT_SIZE
|| memcmp(eccCipher->x, zeros, sizeof(zeros)) != 0
|| memcmp(eccCipher->y, zeros, sizeof(zeros)) != 0) {
error_print();
return -1;
}
memcpy(ciphertext->point.x, eccCipher->x + sizeof(zeros), 32);
memcpy(ciphertext->point.y, eccCipher->y + sizeof(zeros), 32);
memcpy(ciphertext->hash, eccCipher->M, 32);
memcpy(ciphertext->ciphertext, eccCipher->C, eccCipher->L);
ciphertext->ciphertext_size = eccCipher->L;
return 1;
}
int sdf_load_library(const char *so_path, const char *vendor)
{
if (SDF_LoadLibrary((char *)so_path, (char *)vendor) != SDR_OK) {
@@ -348,8 +387,6 @@ int sdf_generate_key(SDF_DEVICE *dev, SDF_KEY *key,
void *hKey;
ECCrefPublicKey eccPublicKey;
ECCCipher eccCipher;
const uint8_t zeros[ECCref_MAX_LEN - 32] = {0};
SM2_POINT point;
SM2_CIPHERTEXT ciphertext;
int ret;
@@ -366,13 +403,8 @@ int sdf_generate_key(SDF_DEVICE *dev, SDF_KEY *key,
return 1;
}
// SM2_KEY => ECCrefPublicKey
sm2_z256_point_to_bytes(&sm2_key->public_key, (uint8_t *)&point);
eccPublicKey.bits = 256;
memset(eccPublicKey.x, 0, sizeof(zeros));
memcpy(eccPublicKey.x + sizeof(zeros), point.x, 32);
memset(eccPublicKey.y, 0, sizeof(zeros));
memcpy(eccPublicKey.y + sizeof(zeros), point.y, 32);
// ECCrefPublicKey <= SM2_KEY
ECCrefPublicKey_from_SM2_Z256_POINT(&eccPublicKey, &sm2_key->public_key);
// SDF_GenerateKeyWithEPK_ECC
if (SDF_OpenSession(dev->handle, &hSession) != SDR_OK) {
@@ -385,22 +417,13 @@ int sdf_generate_key(SDF_DEVICE *dev, SDF_KEY *key,
return -1;
}
// ECCCipher => SM2_CIPHERTEXT
if (eccCipher.L > SM2_MAX_PLAINTEXT_SIZE
|| memcmp(eccCipher.x, zeros, sizeof(zeros)) != 0
|| memcmp(eccCipher.y, zeros, sizeof(zeros)) != 0) {
// ECCCipher => SM2_CIPHERTEXT => DER
if (ECCCipher_to_SM2_CIPHERTEXT(&eccCipher, &ciphertext) != 1) {
(void)SDF_DestroyKey(hSession, hKey);
(void)SDF_CloseSession(hSession);
error_print();
return -1;
}
memcpy(ciphertext.point.x, eccCipher.x + sizeof(zeros), 32);
memcpy(ciphertext.point.y, eccCipher.y + sizeof(zeros), 32);
memcpy(ciphertext.hash, eccCipher.M, 32);
memcpy(ciphertext.ciphertext, eccCipher.C, eccCipher.L);
ciphertext.ciphertext_size = eccCipher.L;
// SM2_CIPHERTEXT => DER
*wrappedkey_len = 0;
if (sm2_ciphertext_to_der(&ciphertext, &wrappedkey, wrappedkey_len) != 1) {
(void)SDF_DestroyKey(hSession, hKey);
@@ -439,10 +462,7 @@ int sdf_import_key(SDF_DEVICE *dev, unsigned int key_index, const char *pass,
void *hSession;
void *hKey;
ECCCipher eccCipher;
const uint8_t zeros[ECCref_MAX_LEN - 32] = {0};
SM2_POINT point;
SM2_CIPHERTEXT ciphertext;
int ret;
if (!dev || !pass || !wrappedkey || !wrappedkey_len) {
error_print();
@@ -464,12 +484,7 @@ int sdf_import_key(SDF_DEVICE *dev, unsigned int key_index, const char *pass,
}
// ECCCipher <= SM2_CIPHERTEXT
memset(eccCipher.x, 0, sizeof(zeros));
memcpy(eccCipher.x + sizeof(zeros), ciphertext.point.x, 32);
memset(eccCipher.y, 0, sizeof(zeros));
memcpy(eccCipher.y + sizeof(zeros), ciphertext.point.y, 32);
memcpy(eccCipher.C, ciphertext.ciphertext, ciphertext.ciphertext_size);
eccCipher.L = ciphertext.ciphertext_size;
ECCCipher_from_SM2_CIPHERTEXT(&eccCipher, &ciphertext);
// SDF_ImportKeyWithISK_ECC
if (SDF_OpenSession(dev->handle, &hSession) != SDR_OK) {
@@ -688,7 +703,7 @@ int sdf_export_sign_public_key(SDF_DEVICE *dev, int key_index, SM2_KEY *sm2_key)
(void)SDF_CloseSession(hSession);
memset(sm2_key, 0, sizeof(SM2_KEY));
if (SDF_ECCrefPublicKey_to_SM2_Z256_POINT(&eccPublicKey, &sm2_key->public_key) != SDR_OK) {
if (ECCrefPublicKey_to_SM2_Z256_POINT(&eccPublicKey, &sm2_key->public_key) != 1) {
error_print();
return -1;
}
@@ -717,13 +732,14 @@ int sdf_export_encrypt_public_key(SDF_DEVICE *dev, int key_index, SM2_KEY *sm2_k
(void)SDF_CloseSession(hSession);
memset(sm2_key, 0, sizeof(SM2_KEY));
if (SDF_ECCrefPublicKey_to_SM2_Z256_POINT(&eccPublicKey, &sm2_key->public_key) != SDR_OK) {
if (ECCrefPublicKey_to_SM2_Z256_POINT(&eccPublicKey, &sm2_key->public_key) != 1) {
error_print();
return -1;
}
return 1;
}
// 这个要改为load_key
int sdf_load_sign_key(SDF_DEVICE *dev, SDF_SIGN_KEY *key, int key_index, const char *pass)
{
void *hSession = NULL;
@@ -753,7 +769,7 @@ int sdf_load_sign_key(SDF_DEVICE *dev, SDF_SIGN_KEY *key, int key_index, const c
return -1;
}
if (SDF_ECCrefPublicKey_to_SM2_Z256_POINT(&eccPublicKey, &key->public_key) != SDR_OK) {
if (ECCrefPublicKey_to_SM2_Z256_POINT(&eccPublicKey, &key->public_key) != 1) {
error_print();
return -1;
}
@@ -775,7 +791,7 @@ int sdf_sign(SDF_SIGN_KEY *key, const uint8_t dgst[32], uint8_t *sig, size_t *si
error_print();
return -1;
}
if (SDF_ECCSignature_to_SM2_SIGNATURE(&ecc_sig, &sm2_sig) != SDR_OK) {
if (ECCSignature_to_SM2_SIGNATURE(&ecc_sig, &sm2_sig) != 1) {
error_print();
return -1;
}
@@ -787,6 +803,45 @@ int sdf_sign(SDF_SIGN_KEY *key, const uint8_t dgst[32], uint8_t *sig, size_t *si
return 1;
}
int sdf_sm2_decrypt(const SDF_SIGN_KEY *key, const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen)
{
ECCCipher eccCipher;
SM2_CIPHERTEXT ciphertext;
unsigned int uiLength = 0;
if (!key || !in || !outlen) {
error_print();
return -1;
}
if (!key->session || key->index < 0) {
error_print();
return -1;
}
if (!out) {
*outlen = SM2_MAX_PLAINTEXT_SIZE;
return 1;
}
if (sm2_ciphertext_from_der(&ciphertext, &in, &inlen) != 1) {
error_print();
return -1;
}
if (inlen != 0) {
error_print();
return -1;
}
ECCCipher_from_SM2_CIPHERTEXT(&eccCipher, &ciphertext);
if (SDF_InternalDecrypt_ECC(key->session, key->index, SGD_SM2_3, &eccCipher, out, &uiLength) != SDR_OK) {
error_print();
return -1;
}
*outlen = uiLength;
return 1;
}
int sdf_sign_init(SDF_SIGN_CTX *ctx, const SDF_SIGN_KEY *key, const char *id, size_t idlen)
{
if (!ctx || !key) {

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);