2000-01-28 03:31:26 +08:00
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=pod
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=head1 NAME
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2000-02-24 19:55:57 +08:00
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DSA_dup_DH - create a DH structure out of DSA structure
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2000-01-28 03:31:26 +08:00
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=head1 SYNOPSIS
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#include <openssl/dsa.h>
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2020-02-03 17:05:31 +08:00
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Deprecated since OpenSSL 3.0, can be hidden entirely by defining
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B<OPENSSL_API_COMPAT> with a suitable version value, see
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L<openssl_user_macros(7)>:
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2017-01-21 02:58:49 +08:00
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DH *DSA_dup_DH(const DSA *r);
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2000-01-28 03:31:26 +08:00
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=head1 DESCRIPTION
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2020-02-03 17:05:31 +08:00
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The function described on this page is deprecated. There is no direct
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replacement, applications should use the EVP_PKEY APIs for Diffie-Hellman
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operations.
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2000-01-28 03:31:26 +08:00
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DSA_dup_DH() duplicates DSA parameters/keys as DH parameters/keys. q
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is lost during that conversion, but the resulting DH parameters
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contain its length.
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2017-12-25 17:50:39 +08:00
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=head1 RETURN VALUES
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2000-01-28 03:31:26 +08:00
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DSA_dup_DH() returns the new B<DH> structure, and NULL on error. The
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2015-08-18 03:21:33 +08:00
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error codes can be obtained by L<ERR_get_error(3)>.
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2000-01-28 03:31:26 +08:00
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2000-01-31 06:16:47 +08:00
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=head1 NOTE
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Be careful to avoid small subgroup attacks when using this.
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2000-01-28 03:31:26 +08:00
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=head1 SEE ALSO
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2016-11-11 16:33:09 +08:00
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L<DH_new(3)>, L<DSA_new(3)>, L<ERR_get_error(3)>
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2000-01-28 03:31:26 +08:00
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2020-02-03 17:05:31 +08:00
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=head1 HISTORY
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This function was deprecated in OpenSSL 3.0.
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2016-05-18 23:44:05 +08:00
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=head1 COPYRIGHT
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2020-04-23 20:55:52 +08:00
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Copyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved.
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2016-05-18 23:44:05 +08:00
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2018-12-06 21:04:44 +08:00
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Licensed under the Apache License 2.0 (the "License"). You may not use
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2016-05-18 23:44:05 +08:00
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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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L<https://www.openssl.org/source/license.html>.
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=cut
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