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Diffstat (limited to 'crypto/rand/rand_eng.c')
| -rw-r--r-- | crypto/rand/rand_eng.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/crypto/rand/rand_eng.c b/crypto/rand/rand_eng.c new file mode 100644 index 0000000..1669cef --- /dev/null +++ b/crypto/rand/rand_eng.c @@ -0,0 +1,152 @@ +/* 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 |
