mirror of
https://github.com/guanzhi/GmSSL.git
synced 2026-05-07 08:56:17 +08:00
241 lines
6.7 KiB
C
241 lines
6.7 KiB
C
/* ====================================================================
|
|
* Copyright (c) 2016 The GmSSL Project. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* 3. All advertising materials mentioning features or use of this
|
|
* software must display the following acknowledgment:
|
|
* "This product includes software developed by the GmSSL Project.
|
|
* (http://gmssl.org/)"
|
|
*
|
|
* 4. The name "GmSSL Project" must not be used to endorse or promote
|
|
* products derived from this software without prior written
|
|
* permission. For written permission, please contact
|
|
* guanzhi1980@gmail.com.
|
|
*
|
|
* 5. Products derived from this software may not be called "GmSSL"
|
|
* nor may "GmSSL" appear in their names without prior written
|
|
* permission of the GmSSL Project.
|
|
*
|
|
* 6. Redistributions of any form whatsoever must retain the following
|
|
* acknowledgment:
|
|
* "This product includes software developed by the GmSSL Project
|
|
* (http://gmssl.org/)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE GmSSL PROJECT ``AS IS'' AND ANY
|
|
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE GmSSL PROJECT OR
|
|
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
|
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
* ====================================================================
|
|
*/
|
|
|
|
#include <openssl/err.h>
|
|
#include <openssl/objects.h>
|
|
#include <openssl/sm9.h>
|
|
#include "sm9_lcl.h"
|
|
|
|
SM9MasterSecret *SM9_generate_master_secret(int pairing, int scheme, int hash1)
|
|
{
|
|
SM9MasterSecret *ret = NULL;
|
|
SM9MasterSecret *msk = NULL;
|
|
BN_CTX *ctx = NULL;
|
|
const BIGNUM *n = SM9_get0_order();
|
|
const BIGNUM *p = SM9_get0_prime();
|
|
int point_form = POINT_CONVERSION_UNCOMPRESSED;
|
|
unsigned char buf[129];
|
|
size_t len = sizeof(buf);
|
|
|
|
if (!(msk = SM9MasterSecret_new())
|
|
|| !(ctx = BN_CTX_new())) {
|
|
SM9err(SM9_F_SM9_GENERATE_MASTER_SECRET, ERR_R_MALLOC_FAILURE);
|
|
goto end;
|
|
}
|
|
BN_CTX_start(ctx);
|
|
|
|
/* set pairing type */
|
|
switch (pairing) {
|
|
case NID_sm9bn256v1:
|
|
if (!(msk->pairing = OBJ_nid2obj(pairing))) {
|
|
SM9err(SM9_F_SM9_GENERATE_MASTER_SECRET, ERR_R_OBJ_LIB);
|
|
goto end;
|
|
}
|
|
break;
|
|
default:
|
|
SM9err(SM9_F_SM9_GENERATE_MASTER_SECRET, SM9_R_INVALID_PAIRING_TYPE);
|
|
goto end;
|
|
}
|
|
|
|
/* set helper functions */
|
|
switch (scheme) {
|
|
case NID_sm9sign:
|
|
case NID_sm9encrypt:
|
|
case NID_sm9keyagreement:
|
|
if (!(msk->scheme = OBJ_nid2obj(scheme))) {
|
|
SM9err(SM9_F_SM9_GENERATE_MASTER_SECRET, ERR_R_OBJ_LIB);
|
|
goto end;
|
|
}
|
|
break;
|
|
default:
|
|
SM9err(SM9_F_SM9_GENERATE_MASTER_SECRET, SM9_R_INVALID_SCHEME);
|
|
goto end;
|
|
}
|
|
|
|
/* set hash1 */
|
|
switch (hash1) {
|
|
case NID_sm9hash1_with_sm3:
|
|
case NID_sm9hash1_with_sha256:
|
|
if (!(msk->hash1 = OBJ_nid2obj(hash1))) {
|
|
SM9err(SM9_F_SM9_GENERATE_MASTER_SECRET, ERR_R_OBJ_LIB);
|
|
goto end;
|
|
}
|
|
break;
|
|
default:
|
|
SM9err(SM9_F_SM9_GENERATE_MASTER_SECRET, SM9_R_INVALID_HASH1);
|
|
goto end;
|
|
}
|
|
|
|
/* generate master secret k = rand(1, n - 1) */
|
|
do {
|
|
|
|
if (!(msk->masterSecret = BN_new())) {
|
|
SM9err(SM9_F_SM9_GENERATE_MASTER_SECRET, ERR_R_MALLOC_FAILURE);
|
|
goto end;
|
|
}
|
|
if (!BN_rand_range(msk->masterSecret, n)) {
|
|
SM9err(SM9_F_SM9_GENERATE_MASTER_SECRET, ERR_R_BN_LIB);
|
|
goto end;
|
|
}
|
|
} while (BN_is_zero(msk->masterSecret));
|
|
|
|
/* generate master public point */
|
|
if (scheme == NID_sm9sign) {
|
|
|
|
/* Ppubs = k * P2 in E'(F_p^2) */
|
|
point_t Ppubs;
|
|
|
|
if (!point_init(&Ppubs, ctx)
|
|
|| !point_mul_generator(&Ppubs, msk->masterSecret, p, ctx)
|
|
|| !point_to_octets(&Ppubs, buf, ctx)) {
|
|
SM9err(SM9_F_SM9_GENERATE_MASTER_SECRET, SM9_R_TWIST_CURVE_ERROR);
|
|
point_cleanup(&Ppubs);
|
|
goto end;
|
|
}
|
|
|
|
len = 129;
|
|
point_cleanup(&Ppubs);
|
|
|
|
} else if (scheme == NID_sm9keyagreement
|
|
|| scheme == NID_sm9encrypt) {
|
|
|
|
/* Ppube = k * P1 in E(F_p) */
|
|
EC_GROUP *group = NULL;
|
|
EC_POINT *Ppube = NULL;
|
|
|
|
if (!(group = EC_GROUP_new_by_curve_name(NID_sm9bn256v1))
|
|
|| !(Ppube = EC_POINT_new(group))
|
|
|| !EC_POINT_mul(group, Ppube, msk->masterSecret, NULL, NULL, ctx)
|
|
|| !(len = EC_POINT_point2oct(group, Ppube, point_form, buf, len, ctx))) {
|
|
SM9err(SM9_F_SM9_GENERATE_MASTER_SECRET, SM9_R_EC_LIB);
|
|
EC_GROUP_free(group);
|
|
EC_POINT_free(Ppube);
|
|
goto end;
|
|
}
|
|
|
|
EC_GROUP_free(group);
|
|
EC_POINT_free(Ppube);
|
|
|
|
} else {
|
|
SM9err(SM9_F_SM9_GENERATE_MASTER_SECRET, SM9_R_INVALID_SCHEME);
|
|
goto end;
|
|
}
|
|
|
|
if (!(msk->pointPpub = ASN1_OCTET_STRING_new())) {
|
|
SM9err(SM9_F_SM9_GENERATE_MASTER_SECRET, ERR_R_MALLOC_FAILURE);
|
|
goto end;
|
|
}
|
|
if (!ASN1_OCTET_STRING_set(msk->pointPpub, buf, (int)len)) {
|
|
ERR_print_errors_fp(stderr);
|
|
goto end;
|
|
}
|
|
|
|
ret = msk;
|
|
msk = NULL;
|
|
|
|
end:
|
|
SM9MasterSecret_free(msk);
|
|
if (ctx) {
|
|
BN_CTX_end(ctx);
|
|
}
|
|
BN_CTX_free(ctx);
|
|
OPENSSL_cleanse(buf, sizeof(buf));
|
|
return ret;
|
|
}
|
|
|
|
SM9PublicParameters *SM9_extract_public_parameters(SM9MasterSecret *msk)
|
|
{
|
|
SM9PublicParameters *ret = NULL;
|
|
SM9PublicParameters *mpk = NULL;
|
|
|
|
if (!(mpk = SM9PublicParameters_new())) {
|
|
SM9err(SM9_F_SM9_EXTRACT_PUBLIC_PARAMETERS, ERR_R_MALLOC_FAILURE);
|
|
return NULL;
|
|
}
|
|
|
|
if (!(mpk->pairing = OBJ_dup(msk->pairing))
|
|
|| !(mpk->scheme = OBJ_dup(msk->scheme))
|
|
|| !(mpk->hash1 = OBJ_dup(msk->hash1))
|
|
|| !(mpk->pointPpub = ASN1_OCTET_STRING_dup(msk->pointPpub))) {
|
|
SM9err(SM9_F_SM9_EXTRACT_PUBLIC_PARAMETERS, ERR_R_MALLOC_FAILURE);
|
|
goto end;
|
|
}
|
|
|
|
ret = mpk;
|
|
mpk = NULL;
|
|
|
|
end:
|
|
SM9PublicParameters_free(mpk);
|
|
return ret;
|
|
}
|
|
|
|
int SM9_setup(int pairing, int scheme, int hash1,
|
|
SM9PublicParameters **pmpk, SM9MasterSecret **pmsk)
|
|
{
|
|
int ret = 0;
|
|
SM9MasterSecret *msk = NULL;
|
|
SM9PublicParameters *mpk = NULL;
|
|
|
|
if (!(msk = SM9_generate_master_secret(pairing, scheme, hash1))
|
|
|| !(mpk = SM9_extract_public_parameters(msk))) {
|
|
goto end;
|
|
}
|
|
|
|
*pmsk = msk;
|
|
*pmpk = mpk;
|
|
msk = NULL;
|
|
mpk = NULL;
|
|
ret = 1;
|
|
|
|
end:
|
|
SM9MasterSecret_free(msk);
|
|
SM9PublicParameters_free(mpk);
|
|
return ret;
|
|
}
|