| /* crypto/rand/rand_lib.c */ |
| /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| * All rights reserved. |
| * |
| * This package is an SSL implementation written |
| * by Eric Young (eay@cryptsoft.com). |
| * The implementation was written so as to conform with Netscapes SSL. |
| * |
| * This library is free for commercial and non-commercial use as long as |
| * the following conditions are aheared to. The following conditions |
| * apply to all code found in this distribution, be it the RC4, RSA, |
| * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| * included with this distribution is covered by the same copyright terms |
| * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| * |
| * Copyright remains Eric Young's, and as such any Copyright notices in |
| * the code are not to be removed. |
| * If this package is used in a product, Eric Young should be given attribution |
| * as the author of the parts of the library used. |
| * This can be in the form of a textual message at program startup or |
| * in documentation (online or textual) provided with the package. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * "This product includes cryptographic software written by |
| * Eric Young (eay@cryptsoft.com)" |
| * The word 'cryptographic' can be left out if the rouines from the library |
| * being used are not cryptographic related :-). |
| * 4. If you include any Windows specific code (or a derivative thereof) from |
| * the apps directory (application code) you must include an acknowledgement: |
| * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * The licence and distribution terms for any publically available version or |
| * derivative of this code cannot be changed. i.e. this code cannot simply be |
| * copied and put under another distribution licence |
| * [including the GNU Public Licence.] |
| */ |
| |
| #include <stdio.h> |
| #include <time.h> |
| #include "cryptlib.h" |
| #include "rand_lcl.h" |
| #include <openssl/rand.h> |
| #ifdef OPENSSL_FIPS |
| #include <openssl/fips.h> |
| #include <openssl/fips_rand.h> |
| #endif |
| |
| #ifndef OPENSSL_NO_ENGINE |
| #include <openssl/engine.h> |
| #endif |
| |
| #if defined(OPENSSL_FIPS) && !defined(OPENSSL_NO_ENGINE) |
| |
| /* non-NULL if default_RAND_meth is ENGINE-provided */ |
| static ENGINE *funct_ref =NULL; |
| |
| int eng_RAND_set_rand_method(const RAND_METHOD *meth, const RAND_METHOD **pmeth) |
| { |
| if(funct_ref) |
| { |
| ENGINE_finish(funct_ref); |
| funct_ref = NULL; |
| } |
| *pmeth = meth; |
| return 1; |
| } |
| |
| const RAND_METHOD *eng_RAND_get_rand_method(const RAND_METHOD **pmeth) |
| { |
| if (!*pmeth) |
| { |
| ENGINE *e = ENGINE_get_default_RAND(); |
| if(e) |
| { |
| *pmeth = ENGINE_get_RAND(e); |
| if(!*pmeth) |
| { |
| ENGINE_finish(e); |
| e = NULL; |
| } |
| } |
| if(e) |
| funct_ref = e; |
| else |
| if(FIPS_mode()) |
| *pmeth=FIPS_rand_method(); |
| else |
| *pmeth = RAND_SSLeay(); |
| } |
| |
| if(FIPS_mode() |
| && *pmeth != FIPS_rand_check()) |
| { |
| RANDerr(RAND_F_ENG_RAND_GET_RAND_METHOD,RAND_R_NON_FIPS_METHOD); |
| return 0; |
| } |
| |
| return *pmeth; |
| } |
| |
| int RAND_set_rand_engine(ENGINE *engine) |
| { |
| const RAND_METHOD *tmp_meth = NULL; |
| if(engine) |
| { |
| if(!ENGINE_init(engine)) |
| return 0; |
| tmp_meth = ENGINE_get_RAND(engine); |
| if(!tmp_meth) |
| { |
| ENGINE_finish(engine); |
| return 0; |
| } |
| } |
| /* This function releases any prior ENGINE so call it first */ |
| RAND_set_rand_method(tmp_meth); |
| funct_ref = engine; |
| return 1; |
| } |
| |
| void int_RAND_init_engine_callbacks(void) |
| { |
| static int done = 0; |
| if (done) |
| return; |
| int_RAND_set_callbacks(eng_RAND_set_rand_method, |
| eng_RAND_get_rand_method); |
| done = 1; |
| } |
| |
| #endif |
