mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-25 11:55:28 +01:00
52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
/*
|
|
* Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
#include "internal/deprecated.h" /* to be able to use EC_KEY and EC_GROUP */
|
|
|
|
#include <openssl/err.h>
|
|
#include "crypto/sm2err.h"
|
|
#include "crypto/sm2.h"
|
|
#include <openssl/ec.h> /* EC_KEY and EC_GROUP functions */
|
|
|
|
/*
|
|
* SM2 key generation is implemented within ec_generate_key() in
|
|
* crypto/ec/ec_key.c
|
|
*/
|
|
|
|
int ossl_sm2_key_private_check(const EC_KEY *eckey)
|
|
{
|
|
int ret = 0;
|
|
BIGNUM *max = NULL;
|
|
const EC_GROUP *group = NULL;
|
|
const BIGNUM *priv_key = NULL, *order = NULL;
|
|
|
|
if (eckey == NULL
|
|
|| (group = EC_KEY_get0_group(eckey)) == NULL
|
|
|| (priv_key = EC_KEY_get0_private_key(eckey)) == NULL
|
|
|| (order = EC_GROUP_get0_order(group)) == NULL ) {
|
|
ERR_raise(ERR_LIB_SM2, ERR_R_PASSED_NULL_PARAMETER);
|
|
return 0;
|
|
}
|
|
|
|
/* range of SM2 private key is [1, n-1) */
|
|
max = BN_dup(order);
|
|
if (max == NULL || !BN_sub_word(max, 1))
|
|
goto end;
|
|
if (BN_cmp(priv_key, BN_value_one()) < 0
|
|
|| BN_cmp(priv_key, max) >= 0) {
|
|
ERR_raise(ERR_LIB_SM2, SM2_R_INVALID_PRIVATE_KEY);
|
|
goto end;
|
|
}
|
|
ret = 1;
|
|
|
|
end:
|
|
BN_free(max);
|
|
return ret;
|
|
}
|