1DH_NEW_BY_NID(3ossl)                OpenSSL               DH_NEW_BY_NID(3ossl)
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NAME

6       DH_new_by_nid, DH_get_nid - create or get DH named parameters
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SYNOPSIS

9        #include <openssl/dh.h>
10        DH *DH_new_by_nid(int nid);
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12       The following functions have been deprecated since OpenSSL 3.0, and can
13       be hidden entirely by defining OPENSSL_API_COMPAT with a suitable
14       version value, see openssl_user_macros(7):
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16        int DH_get_nid(const DH *dh);
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DESCRIPTION

19       DH_new_by_nid() creates and returns a DH structure containing named
20       parameters nid. Currently nid must be NID_ffdhe2048, NID_ffdhe3072,
21       NID_ffdhe4096, NID_ffdhe6144, NID_ffdhe8192, NID_modp_1536,
22       NID_modp_2048, NID_modp_3072, NID_modp_4096, NID_modp_6144 or
23       NID_modp_8192.
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25       DH_get_nid() determines if the parameters contained in dh match any
26       named safe prime group. It returns the NID corresponding to the
27       matching parameters or NID_undef if there is no match.  This function
28       is deprecated.
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RETURN VALUES

31       DH_new_by_nid() returns a set of DH parameters or NULL if an error
32       occurred.
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34       DH_get_nid() returns the NID of the matching set of parameters for p
35       and g and optionally q, otherwise it returns NID_undef if there is no
36       match.
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HISTORY

39       The DH_get_nid() function was deprecated in OpenSSL 3.0.
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42       Copyright 2017-2021 The OpenSSL Project Authors. All Rights Reserved.
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44       Licensed under the Apache License 2.0 (the "License").  You may not use
45       this file except in compliance with the License.  You can obtain a copy
46       in the file LICENSE in the source distribution or at
47       <https://www.openssl.org/source/license.html>.
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513.0.5                             2022-07-05              DH_NEW_BY_NID(3ossl)
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