1
/* ====================================================================
2
* Copyright (c) 2000 The OpenSSL Project. All rights reserved.
4
* Redistribution and use in source and binary forms, with or without
5
* modification, are permitted provided that the following conditions
8
* 1. Redistributions of source code must retain the above copyright
9
* notice, this list of conditions and the following disclaimer.
11
* 2. Redistributions in binary form must reproduce the above copyright
12
* notice, this list of conditions and the following disclaimer in
13
* the documentation and/or other materials provided with the
16
* 3. All advertising materials mentioning features or use of this
17
* software must display the following acknowledgment:
18
* "This product includes software developed by the OpenSSL Project
19
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
21
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
22
* endorse or promote products derived from this software without
23
* prior written permission. For written permission, please contact
24
* licensing@OpenSSL.org.
26
* 5. Products derived from this software may not be called "OpenSSL"
27
* nor may "OpenSSL" appear in their names without prior written
28
* permission of the OpenSSL Project.
30
* 6. Redistributions of any form whatsoever must retain the following
32
* "This product includes software developed by the OpenSSL Project
33
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
35
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
36
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
37
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
38
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
39
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
41
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
42
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
43
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
44
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
45
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
46
* OF THE POSSIBILITY OF SUCH DAMAGE.
47
* ====================================================================
49
* This product includes cryptographic software written by Eric Young
50
* (eay@cryptsoft.com). This product includes software written by Tim
51
* Hudson (tjh@cryptsoft.com).
57
/* If this symbol is defined then ENGINE_get_default_RAND(), the function that is
58
* used by RAND to hook in implementation code and cache defaults (etc), will
59
* display brief debugging summaries to stderr with the 'nid'. */
60
/* #define ENGINE_RAND_DEBUG */
62
static ENGINE_TABLE *rand_table = NULL;
63
static const int dummy_nid = 1;
65
void ENGINE_unregister_RAND(ENGINE *e)
67
engine_table_unregister(&rand_table, e);
70
static void engine_unregister_all_RAND(void)
72
engine_table_cleanup(&rand_table);
75
int ENGINE_register_RAND(ENGINE *e)
78
return engine_table_register(&rand_table,
79
engine_unregister_all_RAND, e, &dummy_nid, 1, 0);
83
void ENGINE_register_all_RAND()
87
for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e))
88
ENGINE_register_RAND(e);
91
int ENGINE_set_default_RAND(ENGINE *e)
94
return engine_table_register(&rand_table,
95
engine_unregister_all_RAND, e, &dummy_nid, 1, 1);
99
/* Exposed API function to get a functional reference from the implementation
100
* table (ie. try to get a functional reference from the tabled structural
102
ENGINE *ENGINE_get_default_RAND(void)
104
return engine_table_select(&rand_table, dummy_nid);
107
/* Obtains an RAND implementation from an ENGINE functional reference */
108
const RAND_METHOD *ENGINE_get_RAND(const ENGINE *e)
113
/* Sets an RAND implementation in an ENGINE structure */
114
int ENGINE_set_RAND(ENGINE *e, const RAND_METHOD *rand_meth)
116
e->rand_meth = rand_meth;