Index: openssl/fips/dh/fips_dh_gen.c |
=================================================================== |
--- openssl/fips/dh/fips_dh_gen.c (revision 105093) |
+++ openssl/fips/dh/fips_dh_gen.c (working copy) |
@@ -1,192 +0,0 @@ |
-/* crypto/dh/dh_gen.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.] |
- */ |
- |
-/* NB: These functions have been upgraded - the previous prototypes are in |
- * dh_depr.c as wrappers to these ones. |
- * - Geoff |
- */ |
- |
-#include <stdio.h> |
-#include <openssl/bn.h> |
-#include <openssl/dh.h> |
-#include <openssl/err.h> |
-#include <openssl/fips.h> |
- |
-#ifdef OPENSSL_FIPS |
- |
-static int dh_builtin_genparams(DH *ret, int prime_len, int generator, BN_GENCB *cb); |
- |
-int DH_generate_parameters_ex(DH *ret, int prime_len, int generator, BN_GENCB *cb) |
- { |
- if(ret->meth->generate_params) |
- return ret->meth->generate_params(ret, prime_len, generator, cb); |
- return dh_builtin_genparams(ret, prime_len, generator, cb); |
- } |
- |
-/* We generate DH parameters as follows |
- * find a prime q which is prime_len/2 bits long. |
- * p=(2*q)+1 or (p-1)/2 = q |
- * For this case, g is a generator if |
- * g^((p-1)/q) mod p != 1 for values of q which are the factors of p-1. |
- * Since the factors of p-1 are q and 2, we just need to check |
- * g^2 mod p != 1 and g^q mod p != 1. |
- * |
- * Having said all that, |
- * there is another special case method for the generators 2, 3 and 5. |
- * for 2, p mod 24 == 11 |
- * for 3, p mod 12 == 5 <<<<< does not work for safe primes. |
- * for 5, p mod 10 == 3 or 7 |
- * |
- * Thanks to Phil Karn <karn@qualcomm.com> for the pointers about the |
- * special generators and for answering some of my questions. |
- * |
- * I've implemented the second simple method :-). |
- * Since DH should be using a safe prime (both p and q are prime), |
- * this generator function can take a very very long time to run. |
- */ |
-/* Actually there is no reason to insist that 'generator' be a generator. |
- * It's just as OK (and in some sense better) to use a generator of the |
- * order-q subgroup. |
- */ |
-static int dh_builtin_genparams(DH *ret, int prime_len, int generator, BN_GENCB *cb) |
- { |
- BIGNUM *t1,*t2; |
- int g,ok= -1; |
- BN_CTX *ctx=NULL; |
- |
- if(FIPS_selftest_failed()) |
- { |
- FIPSerr(FIPS_F_DH_BUILTIN_GENPARAMS,FIPS_R_FIPS_SELFTEST_FAILED); |
- return 0; |
- } |
- |
- if (FIPS_mode() && (prime_len < OPENSSL_DH_FIPS_MIN_MODULUS_BITS)) |
- { |
- DHerr(DH_F_DH_BUILTIN_GENPARAMS, DH_R_KEY_SIZE_TOO_SMALL); |
- goto err; |
- } |
- |
- ctx=BN_CTX_new(); |
- if (ctx == NULL) goto err; |
- BN_CTX_start(ctx); |
- t1 = BN_CTX_get(ctx); |
- t2 = BN_CTX_get(ctx); |
- if (t1 == NULL || t2 == NULL) goto err; |
- |
- /* Make sure 'ret' has the necessary elements */ |
- if(!ret->p && ((ret->p = BN_new()) == NULL)) goto err; |
- if(!ret->g && ((ret->g = BN_new()) == NULL)) goto err; |
- |
- if (generator <= 1) |
- { |
- DHerr(DH_F_DH_BUILTIN_GENPARAMS, DH_R_BAD_GENERATOR); |
- goto err; |
- } |
- if (generator == DH_GENERATOR_2) |
- { |
- if (!BN_set_word(t1,24)) goto err; |
- if (!BN_set_word(t2,11)) goto err; |
- g=2; |
- } |
-#if 0 /* does not work for safe primes */ |
- else if (generator == DH_GENERATOR_3) |
- { |
- if (!BN_set_word(t1,12)) goto err; |
- if (!BN_set_word(t2,5)) goto err; |
- g=3; |
- } |
-#endif |
- else if (generator == DH_GENERATOR_5) |
- { |
- if (!BN_set_word(t1,10)) goto err; |
- if (!BN_set_word(t2,3)) goto err; |
- /* BN_set_word(t3,7); just have to miss |
- * out on these ones :-( */ |
- g=5; |
- } |
- else |
- { |
- /* in the general case, don't worry if 'generator' is a |
- * generator or not: since we are using safe primes, |
- * it will generate either an order-q or an order-2q group, |
- * which both is OK */ |
- if (!BN_set_word(t1,2)) goto err; |
- if (!BN_set_word(t2,1)) goto err; |
- g=generator; |
- } |
- |
- if(!BN_generate_prime_ex(ret->p,prime_len,1,t1,t2,cb)) goto err; |
- if(!BN_GENCB_call(cb, 3, 0)) goto err; |
- if (!BN_set_word(ret->g,g)) goto err; |
- ok=1; |
-err: |
- if (ok == -1) |
- { |
- DHerr(DH_F_DH_BUILTIN_GENPARAMS,ERR_R_BN_LIB); |
- ok=0; |
- } |
- |
- if (ctx != NULL) |
- { |
- BN_CTX_end(ctx); |
- BN_CTX_free(ctx); |
- } |
- return ok; |
- } |
- |
-#endif |