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53 lines
1.6 KiB
Plaintext
53 lines
1.6 KiB
Plaintext
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=pod
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=head1 NAME
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DH_new_by_nid, DH_get_nid - create or get DH named parameters
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=head1 SYNOPSIS
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#include <openssl/dh.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 *DH_new_by_nid(int nid);
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int DH_get_nid(const DH *dh);
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=head1 DESCRIPTION
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DH_new_by_nid() creates and returns a DH structure containing named parameters
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B<nid>. Currently B<nid> must be B<NID_ffdhe2048>, B<NID_ffdhe3072>,
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B<NID_ffdhe4096>, B<NID_ffdhe6144>, B<NID_ffdhe8192>,
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B<NID_modp_1536>, B<NID_modp_2048>, B<NID_modp_3072>,
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B<NID_modp_4096>, B<NID_modp_6144> or B<NID_modp_8192>.
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DH_get_nid() determines if the parameters contained in B<dh> match
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any named safe prime group. It returns the NID corresponding to the matching
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parameters or B<NID_undef> if there is no match.
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This function is deprecated.
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=head1 RETURN VALUES
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DH_new_by_nid() returns a set of DH parameters or B<NULL> if an error occurred.
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DH_get_nid() returns the NID of the matching set of parameters for p and g
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and optionally q, otherwise it returns B<NID_undef> if there is no match.
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=head1 HISTORY
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All of these functions were deprecated in OpenSSL 3.0.
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=head1 COPYRIGHT
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Copyright 2017-2022 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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