2 * Copyright 2001-2018 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
12 static ENGINE_TABLE *dh_table = NULL;
13 static const int dummy_nid = 1;
15 void ENGINE_unregister_DH(ENGINE *e)
17 engine_table_unregister(&dh_table, e);
20 static void engine_unregister_all_DH(void)
22 engine_table_cleanup(&dh_table);
25 int ENGINE_register_DH(ENGINE *e)
28 return engine_table_register(&dh_table,
29 engine_unregister_all_DH, e, &dummy_nid,
34 void ENGINE_register_all_DH(void)
38 for (e = ENGINE_get_first(); e; e = ENGINE_get_next(e))
39 ENGINE_register_DH(e);
42 int ENGINE_set_default_DH(ENGINE *e)
45 return engine_table_register(&dh_table,
46 engine_unregister_all_DH, e, &dummy_nid,
52 * Exposed API function to get a functional reference from the implementation
53 * table (ie. try to get a functional reference from the tabled structural
56 ENGINE *ENGINE_get_default_DH(void)
58 return engine_table_select(&dh_table, dummy_nid);
61 /* Obtains an DH implementation from an ENGINE functional reference */
62 const DH_METHOD *ENGINE_get_DH(const ENGINE *e)
67 /* Sets an DH implementation in an ENGINE structure */
68 int ENGINE_set_DH(ENGINE *e, const DH_METHOD *dh_meth)