mirror of https://github.com/openssl/openssl.git
57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
/*
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* Copyright 2020-2021 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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/*
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* DSA low level APIs are deprecated for public use, but still ok for
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* internal use.
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*/
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#include "internal/deprecated.h"
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#include <openssl/core_names.h>
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#include "crypto/dsa.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 ossl_dsa_key_fromdata(DSA *dsa, const OSSL_PARAM params[])
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{
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const OSSL_PARAM *param_priv_key, *param_pub_key;
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BIGNUM *priv_key = NULL, *pub_key = NULL;
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if (dsa == NULL)
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return 0;
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param_priv_key =
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OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PRIV_KEY);
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param_pub_key =
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OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PUB_KEY);
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/* It's ok if neither half is present */
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if (param_priv_key == NULL && param_pub_key == NULL)
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return 1;
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if (param_pub_key != NULL && !OSSL_PARAM_get_BN(param_pub_key, &pub_key))
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goto err;
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if (param_priv_key != NULL && !OSSL_PARAM_get_BN(param_priv_key, &priv_key))
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goto err;
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if (!DSA_set0_key(dsa, pub_key, priv_key))
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goto err;
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return 1;
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err:
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BN_clear_free(priv_key);
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BN_free(pub_key);
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return 0;
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}
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