DH_new, DH_free - allocate and free DH objects

       Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the Apache License 2.0 (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>.

3.5.0                                              2025-06-04                                       DH_NEW(3SSL)

DH_new() allocates and initializes a DH structure.

       DH_free() frees the DH structure and its components. The values are erased before the memory is returned
       to the system.  If dh is NULL nothing is done.

       All of these functions were deprecated in OpenSSL 3.0.

       For replacement see EVP_PKEY-DH(7).

       DH_new, DH_free - allocate and free DH objects

       If the allocation fails, DH_new() returns NULL and sets an error code that can be obtained by
       ERR_get_error(3). Otherwise it returns a pointer to the newly allocated structure.

       DH_free() returns no value.

DH_new(3), ERR_get_error(3), DH_generate_parameters(3), DH_generate_key(3), EVP_PKEY-DH(7)

        #include <openssl/dh.h>

       The following functions have been deprecated since OpenSSL 3.0, and can be hidden entirely by defining
       OPENSSL_API_COMPAT with a suitable version value, see openssl_user_macros(7):

        DH* DH_new(void);

        void DH_free(DH *dh);