1 /* crypto/rand/rand_lib.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
63 #include <openssl/rand.h>
65 #include <openssl/fips.h>
66 #include <openssl/fips_rand.h>
69 #ifndef OPENSSL_NO_ENGINE
70 #include <openssl/engine.h>
73 #if defined(OPENSSL_FIPS) && !defined(OPENSSL_NO_ENGINE)
75 /* non-NULL if default_RAND_meth is ENGINE-provided */
76 static ENGINE *funct_ref =NULL;
78 int eng_RAND_set_rand_method(const RAND_METHOD *meth, const RAND_METHOD **pmeth)
82 ENGINE_finish(funct_ref);
89 const RAND_METHOD *eng_RAND_get_rand_method(const RAND_METHOD **pmeth)
93 ENGINE *e = ENGINE_get_default_RAND();
96 *pmeth = ENGINE_get_RAND(e);
107 *pmeth=FIPS_rand_method();
109 *pmeth = RAND_SSLeay();
113 && *pmeth != FIPS_rand_check())
115 RANDerr(RAND_F_ENG_RAND_GET_RAND_METHOD,RAND_R_NON_FIPS_METHOD);
122 int RAND_set_rand_engine(ENGINE *engine)
124 const RAND_METHOD *tmp_meth = NULL;
127 if(!ENGINE_init(engine))
129 tmp_meth = ENGINE_get_RAND(engine);
132 ENGINE_finish(engine);
136 /* This function releases any prior ENGINE so call it first */
137 RAND_set_rand_method(tmp_meth);
142 void int_RAND_init_engine_callbacks(void)
147 int_RAND_set_callbacks(eng_RAND_set_rand_method,
148 eng_RAND_get_rand_method);