mirror of https://github.com/openssl/openssl
54 lines
1.3 KiB
Plaintext
54 lines
1.3 KiB
Plaintext
=pod
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=head1 NAME
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DSA_dup_DH - create a DH structure out of DSA structure
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=head1 SYNOPSIS
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#include <openssl/dsa.h>
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The following functions have been deprecated since OpenSSL 3.0, and can be
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hidden entirely by defining B<OPENSSL_API_COMPAT> with a suitable version value,
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see L<openssl_user_macros(7)>:
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DH *DSA_dup_DH(const DSA *r);
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=head1 DESCRIPTION
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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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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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=head1 RETURN VALUES
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DSA_dup_DH() returns the new B<DH> structure, and NULL on error. The
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error codes can be obtained by L<ERR_get_error(3)>.
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=head1 NOTE
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Be careful to avoid small subgroup attacks when using this.
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=head1 SEE ALSO
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L<DH_new(3)>, L<DSA_new(3)>, L<ERR_get_error(3)>
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=head1 HISTORY
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This function was deprecated in OpenSSL 3.0.
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=head1 COPYRIGHT
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Copyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved.
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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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L<https://www.openssl.org/source/license.html>.
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=cut
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