--- /dev/null
+/* crypto/bn/exptest.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 <stdlib.h>
+#include <string.h>
+
+#include "../e_os.h"
+
+#include <openssl/bio.h>
+#include <openssl/bn.h>
+#include <openssl/rand.h>
+#include <openssl/err.h>
+
+#define NUM_BITS (BN_BITS*2)
+
+static const char rnd_seed[] = "string to make the random number generator think it has entropy";
+
+int main(int argc, char *argv[])
+ {
+ BN_CTX *ctx;
+ BIO *out=NULL;
+ int i,ret;
+ unsigned char c;
+ BIGNUM *r_mont,*r_recp,*r_simple,*a,*b,*m;
+
+ RAND_seed(rnd_seed, sizeof rnd_seed); /* or BN_rand may fail, and we don't
+ * even check its return value
+ * (which we should) */
+
+ ERR_load_BN_strings();
+
+ ctx=BN_CTX_new();
+ if (ctx == NULL) EXIT(1);
+ r_mont=BN_new();
+ r_recp=BN_new();
+ r_simple=BN_new();
+ a=BN_new();
+ b=BN_new();
+ m=BN_new();
+ if ( (r_mont == NULL) || (r_recp == NULL) ||
+ (a == NULL) || (b == NULL))
+ goto err;
+
+ out=BIO_new(BIO_s_file());
+
+ if (out == NULL) EXIT(1);
+ BIO_set_fp(out,stdout,BIO_NOCLOSE);
+
+ for (i=0; i<200; i++)
+ {
+ RAND_bytes(&c,1);
+ c=(c%BN_BITS)-BN_BITS2;
+ BN_rand(a,NUM_BITS+c,0,0);
+
+ RAND_bytes(&c,1);
+ c=(c%BN_BITS)-BN_BITS2;
+ BN_rand(b,NUM_BITS+c,0,0);
+
+ RAND_bytes(&c,1);
+ c=(c%BN_BITS)-BN_BITS2;
+ BN_rand(m,NUM_BITS+c,0,1);
+
+ BN_mod(a,a,m,ctx);
+ BN_mod(b,b,m,ctx);
+
+ ret=BN_mod_exp_mont(r_mont,a,b,m,ctx,NULL);
+ if (ret <= 0)
+ {
+ printf("BN_mod_exp_mont() problems\n");
+ ERR_print_errors(out);
+ EXIT(1);
+ }
+
+ ret=BN_mod_exp_recp(r_recp,a,b,m,ctx);
+ if (ret <= 0)
+ {
+ printf("BN_mod_exp_recp() problems\n");
+ ERR_print_errors(out);
+ EXIT(1);
+ }
+
+ ret=BN_mod_exp_simple(r_simple,a,b,m,ctx);
+ if (ret <= 0)
+ {
+ printf("BN_mod_exp_simple() problems\n");
+ ERR_print_errors(out);
+ EXIT(1);
+ }
+
+ if (BN_cmp(r_simple, r_mont) == 0
+ && BN_cmp(r_simple,r_recp) == 0)
+ {
+ printf(".");
+ fflush(stdout);
+ }
+ else
+ {
+ if (BN_cmp(r_simple,r_mont) != 0)
+ printf("\nsimple and mont results differ\n");
+ if (BN_cmp(r_simple,r_recp) != 0)
+ printf("\nsimple and recp results differ\n");
+
+ printf("a (%3d) = ",BN_num_bits(a)); BN_print(out,a);
+ printf("\nb (%3d) = ",BN_num_bits(b)); BN_print(out,b);
+ printf("\nm (%3d) = ",BN_num_bits(m)); BN_print(out,m);
+ printf("\nsimple ="); BN_print(out,r_simple);
+ printf("\nrecp ="); BN_print(out,r_recp);
+ printf("\nmont ="); BN_print(out,r_mont);
+ printf("\n");
+ EXIT(1);
+ }
+ }
+ BN_free(r_mont);
+ BN_free(r_recp);
+ BN_free(r_simple);
+ BN_free(a);
+ BN_free(b);
+ BN_free(m);
+ BN_CTX_free(ctx);
+ ERR_remove_state(0);
+ CRYPTO_mem_leaks(out);
+ BIO_free(out);
+ printf(" done\n");
+ EXIT(0);
+err:
+ ERR_load_crypto_strings();
+ ERR_print_errors(out);
+ EXIT(1);
+ return(1);
+ }
+
projects / bcm963xx.git / blobdiff