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4f2271d58a
For FIPS validation purposes - Automated Cryptographic Validation Protocol (ACVP) tests need to be performed. (See https://github.com/usnistgov/ACVP). These tests are very similiar to the old CAVS tests. This PR uses a hardwired subset of these test vectors to perform similiar operations, to show the usage and prove that the API's are able to perform the required operations. It may also help with communication with the lab (i.e- The lab could add a test here to show a unworking use case - which we can then address). The EVP layer performs these tests instead of calling lower level API's as was done in the old FOM. Some of these tests require access to internals that are not normally allowed/required. The config option 'acvp_tests' (enabled by default) has been added so that this access may be removed. The mechanism has been implemented as additional OSSL_PARAM values that can be set and get. A callback mechanism did not seem to add any additional benefit. These params will not be added to the gettables lists. Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/11572)
85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
/*
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* Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/bn.h>
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#include "dsa_local.h"
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#include "crypto/dsa.h"
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int dsa_check_params(const DSA *dsa, int *ret)
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{
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/*
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* (2b) FFC domain params conform to FIPS-186-4 explicit domain param
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* validity tests.
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*/
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return ffc_params_FIPS186_4_validate(dsa->libctx, &dsa->params,
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FFC_PARAM_TYPE_DSA, ret, NULL);
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}
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/*
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* See SP800-56Ar3 Section 5.6.2.3.1 : FFC Full public key validation.
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*/
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int dsa_check_pub_key(const DSA *dsa, const BIGNUM *pub_key, int *ret)
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{
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return ffc_validate_public_key(&dsa->params, pub_key, ret);
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}
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/*
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* See SP800-56Ar3 Section 5.6.2.3.1 : FFC Partial public key validation.
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* To only be used with ephemeral FFC public keys generated using the approved
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* safe-prime groups.
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*/
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int dsa_check_pub_key_partial(const DSA *dsa, const BIGNUM *pub_key, int *ret)
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{
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return ffc_validate_public_key_partial(&dsa->params, pub_key, ret);
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}
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int dsa_check_priv_key(const DSA *dsa, const BIGNUM *priv_key, int *ret)
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{
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*ret = 0;
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return (dsa->params.q != NULL
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&& ffc_validate_private_key(dsa->params.q, priv_key, ret));
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}
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/*
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* FFC pairwise check from SP800-56A R3.
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* Section 5.6.2.1.4 Owner Assurance of Pair-wise Consistency
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*/
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int dsa_check_pairwise(const DSA *dsa)
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{
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int ret = 0;
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BN_CTX *ctx = NULL;
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BIGNUM *pub_key = NULL;
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if (dsa->params.p == NULL
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|| dsa->params.g == NULL
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|| dsa->priv_key == NULL
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|| dsa->pub_key == NULL)
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return 0;
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ctx = BN_CTX_new_ex(dsa->libctx);
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if (ctx == NULL)
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goto err;
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pub_key = BN_new();
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if (pub_key == NULL)
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goto err;
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/* recalculate the public key = (g ^ priv) mod p */
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if (!dsa_generate_public_key(ctx, dsa, dsa->priv_key, pub_key))
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goto err;
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/* check it matches the existing pubic_key */
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ret = BN_cmp(pub_key, dsa->pub_key) == 0;
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err:
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BN_free(pub_key);
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BN_CTX_free(ctx);
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return ret;
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}
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