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DH_new(3) OpenSSL DH_new(3) NAME DH_new, DH_free - allocate and free DH objects LIBRARY libcrypto, -lcrypto SYNOPSIS #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); DESCRIPTION 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. RETURN VALUES 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. SEE ALSO DH_new(3), ERR_get_error(3), DH_generate_parameters(3), DH_generate_key(3), EVP_PKEY-DH(7) HISTORY All of these functions were deprecated in OpenSSL 3.0. For replacement see EVP_PKEY-DH(7). COPYRIGHT Copyright 2000-2022 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>. 3.0.12 2023-05-07 DH_new(3)