mirror of
https://github.com/openssl/openssl.git
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023b188ca5
The previous commit added the EVP_PKEY_CTX_[get|set]_group_name functions to work with EC groups. We now extend that to also work for DH. Reviewed-by: Shane Lontis <shane.lontis@oracle.com> (Merged from https://github.com/openssl/openssl/pull/11914)
114 lines
3.5 KiB
C
114 lines
3.5 KiB
C
/*
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* Copyright 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 <openssl/core_names.h>
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#include "internal/ffc.h"
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#include "internal/sizes.h"
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/*
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* The intention with the "backend" source file is to offer backend support
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* for legacy backends (EVP_PKEY_ASN1_METHOD and EVP_PKEY_METHOD) and provider
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* implementations alike.
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*/
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int ffc_params_fromdata(FFC_PARAMS *ffc, const OSSL_PARAM params[])
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{
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const OSSL_PARAM *prm;
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const OSSL_PARAM *param_p, *param_q, *param_g;
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BIGNUM *p = NULL, *q = NULL, *g = NULL, *j = NULL;
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int i;
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if (ffc == NULL)
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return 0;
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prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_GROUP_NAME);
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if (prm != NULL) {
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if (prm->data_type != OSSL_PARAM_UTF8_STRING)
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goto err;
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#ifndef OPENSSL_NO_DH
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/*
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* In a no-dh build we just go straight to err because we have no
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* support for this.
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*/
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if (!ffc_set_group_pqg(ffc, prm->data))
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#endif
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goto err;
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}
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param_p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_P);
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param_g = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_G);
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param_q = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_Q);
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if ((param_p != NULL && !OSSL_PARAM_get_BN(param_p, &p))
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|| (param_q != NULL && !OSSL_PARAM_get_BN(param_q, &q))
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|| (param_g != NULL && !OSSL_PARAM_get_BN(param_g, &g)))
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goto err;
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prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_GINDEX);
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if (prm != NULL) {
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if (!OSSL_PARAM_get_int(prm, &i))
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goto err;
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ffc->gindex = i;
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}
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prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_PCOUNTER);
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if (prm != NULL) {
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if (!OSSL_PARAM_get_int(prm, &i))
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goto err;
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ffc->pcounter = i;
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}
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prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_COFACTOR);
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if (prm != NULL && !OSSL_PARAM_get_BN(prm, &j))
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goto err;
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prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_H);
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if (prm != NULL) {
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if (!OSSL_PARAM_get_int(prm, &i))
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goto err;
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ffc->h = i;
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}
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prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_SEED);
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if (prm != NULL) {
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if (prm->data_type != OSSL_PARAM_OCTET_STRING)
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goto err;
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if (!ffc_params_set_seed(ffc, prm->data, prm->data_size))
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goto err;
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}
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prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_VALIDATE_TYPE);
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if (prm != NULL) {
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if (prm->data_type != OSSL_PARAM_UTF8_STRING)
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goto err;
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ffc_params_set_flags(ffc, ffc_params_flags_from_name(prm->data));
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}
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prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_DIGEST);
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if (prm != NULL) {
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const OSSL_PARAM *p1;
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const char *props = NULL;
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if (prm->data_type != OSSL_PARAM_UTF8_STRING)
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goto err;
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p1 = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_DIGEST_PROPS);
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if (p1 != NULL) {
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if (p1->data_type != OSSL_PARAM_UTF8_STRING)
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goto err;
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}
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if (!ffc_set_digest(ffc, prm->data, props))
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goto err;
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}
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ffc_params_set0_pqg(ffc, p, q, g);
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ffc_params_set0_j(ffc, j);
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return 1;
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err:
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BN_free(j);
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BN_free(p);
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BN_free(q);
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BN_free(g);
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return 0;
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}
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