mirror of
https://github.com/openssl/openssl.git
synced 2024-12-27 06:21:43 +08:00
eaee1765a4
The semantics of ossl_ffc_validate_public_key() and ossl_ffc_validate_public_key_partial() needs to be changed to not return error on non-fatal problems. Fixes #22287 Reviewed-by: Todd Short <todd.short@me.com> Reviewed-by: Paul Dale <pauli@openssl.org> (Merged from https://github.com/openssl/openssl/pull/22291)
98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
/*
|
|
* Copyright 1995-2021 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
|
|
*/
|
|
|
|
/*
|
|
* DSA low level APIs are deprecated for public use, but still ok for
|
|
* internal use.
|
|
*/
|
|
#include "internal/deprecated.h"
|
|
|
|
#include <stdio.h>
|
|
#include "internal/cryptlib.h"
|
|
#include <openssl/bn.h>
|
|
#include "dsa_local.h"
|
|
#include "crypto/dsa.h"
|
|
|
|
int ossl_dsa_check_params(const DSA *dsa, int checktype, int *ret)
|
|
{
|
|
if (checktype == OSSL_KEYMGMT_VALIDATE_QUICK_CHECK)
|
|
return ossl_ffc_params_simple_validate(dsa->libctx, &dsa->params,
|
|
FFC_PARAM_TYPE_DSA, ret);
|
|
else
|
|
/*
|
|
* Do full FFC domain params validation according to FIPS-186-4
|
|
* - always in FIPS_MODULE
|
|
* - only if possible (i.e., seed is set) in default provider
|
|
*/
|
|
return ossl_ffc_params_full_validate(dsa->libctx, &dsa->params,
|
|
FFC_PARAM_TYPE_DSA, ret);
|
|
}
|
|
|
|
/*
|
|
* See SP800-56Ar3 Section 5.6.2.3.1 : FFC Full public key validation.
|
|
*/
|
|
int ossl_dsa_check_pub_key(const DSA *dsa, const BIGNUM *pub_key, int *ret)
|
|
{
|
|
return ossl_ffc_validate_public_key(&dsa->params, pub_key, ret)
|
|
&& *ret == 0;
|
|
}
|
|
|
|
/*
|
|
* See SP800-56Ar3 Section 5.6.2.3.1 : FFC Partial public key validation.
|
|
* To only be used with ephemeral FFC public keys generated using the approved
|
|
* safe-prime groups.
|
|
*/
|
|
int ossl_dsa_check_pub_key_partial(const DSA *dsa, const BIGNUM *pub_key, int *ret)
|
|
{
|
|
return ossl_ffc_validate_public_key_partial(&dsa->params, pub_key, ret)
|
|
&& *ret == 0;
|
|
}
|
|
|
|
int ossl_dsa_check_priv_key(const DSA *dsa, const BIGNUM *priv_key, int *ret)
|
|
{
|
|
*ret = 0;
|
|
|
|
return (dsa->params.q != NULL
|
|
&& ossl_ffc_validate_private_key(dsa->params.q, priv_key, ret));
|
|
}
|
|
|
|
/*
|
|
* FFC pairwise check from SP800-56A R3.
|
|
* Section 5.6.2.1.4 Owner Assurance of Pair-wise Consistency
|
|
*/
|
|
int ossl_dsa_check_pairwise(const DSA *dsa)
|
|
{
|
|
int ret = 0;
|
|
BN_CTX *ctx = NULL;
|
|
BIGNUM *pub_key = NULL;
|
|
|
|
if (dsa->params.p == NULL
|
|
|| dsa->params.g == NULL
|
|
|| dsa->priv_key == NULL
|
|
|| dsa->pub_key == NULL)
|
|
return 0;
|
|
|
|
ctx = BN_CTX_new_ex(dsa->libctx);
|
|
if (ctx == NULL)
|
|
goto err;
|
|
pub_key = BN_new();
|
|
if (pub_key == NULL)
|
|
goto err;
|
|
|
|
/* recalculate the public key = (g ^ priv) mod p */
|
|
if (!ossl_dsa_generate_public_key(ctx, dsa, dsa->priv_key, pub_key))
|
|
goto err;
|
|
/* check it matches the existing pubic_key */
|
|
ret = BN_cmp(pub_key, dsa->pub_key) == 0;
|
|
err:
|
|
BN_free(pub_key);
|
|
BN_CTX_free(ctx);
|
|
return ret;
|
|
}
|