DH_NEW_BY_NID

Section: OpenSSL (3)
Updated: 2021-03-26
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NAME

DH_new_by_nid, DH_get_nid - get or find DH named parameters

SYNOPSIS

 #include <openssl/dh.h>
 DH *DH_new_by_nid(int nid);
 int DH_get_nid(const DH *dh);

DESCRIPTION

DH_new_by_nid() creates and returns a DH structure containing named parameters nid. Currently nid must be NID_ffdhe2048, NID_ffdhe3072, NID_ffdhe4096, NID_ffdhe6144, NID_ffdhe8192, NID_modp_1536, NID_modp_2048, NID_modp_3072, NID_modp_4096, NID_modp_6144 or NID_modp_8192.

DH_get_nid() determines if the parameters contained in dh match any named set. It returns the NID corresponding to the matching parameters or NID_undef if there is no match.

RETURN VALUES

DH_new_by_nid() returns a set of DH parameters or NULL if an error occurred.

DH_get_nid() returns the NID of the matching set of parameters or NID_undef if there is no match.

COPYRIGHT

Licensed under the OpenSSL license (the ``License''). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>.