1DSA_DUP_DH(3ossl)                   OpenSSL                  DSA_DUP_DH(3ossl)
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NAME

6       DSA_dup_DH - create a DH structure out of DSA structure
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SYNOPSIS

9        #include <openssl/dsa.h>
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11       The following functions have been deprecated since OpenSSL 3.0, and can
12       be hidden entirely by defining OPENSSL_API_COMPAT with a suitable
13       version value, see openssl_user_macros(7):
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15        DH *DSA_dup_DH(const DSA *r);
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DESCRIPTION

18       The function described on this page is deprecated. There is no direct
19       replacement, applications should use the EVP_PKEY APIs for Diffie-
20       Hellman operations.
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22       DSA_dup_DH() duplicates DSA parameters/keys as DH parameters/keys. q is
23       lost during that conversion, but the resulting DH parameters contain
24       its length.
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RETURN VALUES

27       DSA_dup_DH() returns the new DH structure, and NULL on error. The error
28       codes can be obtained by ERR_get_error(3).
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NOTE

31       Be careful to avoid small subgroup attacks when using this.
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SEE ALSO

34       DH_new(3), DSA_new(3), ERR_get_error(3)
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HISTORY

37       This function was deprecated in OpenSSL 3.0.
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40       Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved.
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42       Licensed under the Apache License 2.0 (the "License").  You may not use
43       this file except in compliance with the License.  You can obtain a copy
44       in the file LICENSE in the source distribution or at
45       <https://www.openssl.org/source/license.html>.
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493.0.5                             2022-07-05                 DSA_DUP_DH(3ossl)
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