1 files changed, 191 insertions, 0 deletions

diff --git a/src/regress/lib/libcrypto/exp/exptest.c b/src/regress/lib/libcrypto/exp/exptest.c
new file mode 100644
index 0000000000..faa9328ba9
--- /dev/null
+++ b/src/regress/lib/libcrypto/exp/exptest.c
@@ -0,0 +1,191 @@
+/* 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 <openssl/bio.h>
+#include <openssl/bn.h>
+#include <openssl/rand.h>
+#include <openssl/err.h>
+
+#define NUM_BITS        (BN_BITS*2)
+
+int main(int argc, char *argv[])
+        {
+        BN_CTX *ctx;
+        BIO *out=NULL;
+        int i,ret;
+        unsigned char c;
+        BIGNUM *r_mont,*r_mont_const,*r_recp,*r_simple,*a,*b,*m;
+
+        ERR_load_BN_strings();
+
+        ctx=BN_CTX_new();
+        if (ctx == NULL) exit(1);
+        r_mont=BN_new();
+        r_mont_const=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);
+                        }
+
+                ret=BN_mod_exp_mont_consttime(r_mont_const,a,b,m,ctx,NULL);
+                if (ret <= 0)
+                        {
+                        printf("BN_mod_exp_mont_consttime() problems\n");
+                        ERR_print_errors(out);
+                        exit(1);
+                        }
+
+                if (BN_cmp(r_simple, r_mont) == 0
+                    && BN_cmp(r_simple,r_recp) == 0
+                        && BN_cmp(r_simple,r_mont_const) == 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_mont_const) != 0)
+                                printf("\nsimple and mont const time 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("\nmont_ct  ="); BN_print(out,r_mont_const);
+                        printf("\n");
+                        exit(1);
+                        }
+                }
+        BN_free(r_mont);
+        BN_free(r_mont_const);
+        BN_free(r_recp);
+        BN_free(r_simple);
+        BN_free(a);
+        BN_free(b);
+        BN_free(m);
+        BN_CTX_free(ctx);
+        ERR_remove_thread_state(NULL);
+        CRYPTO_mem_leaks(out);
+        BIO_free(out);
+        printf(" done\n");
+        exit(0);
+err:
+        ERR_load_crypto_strings();
+        ERR_print_errors(out);
+        exit(1);
+        }