1 files changed, 58 insertions, 19 deletions

diff --git a/src/lib/libcrypto/bn/exptest.c b/src/lib/libcrypto/bn/exptest.c
index 67dc95d726..5ca570d1a8 100644
--- a/src/lib/libcrypto/bn/exptest.c
+++ b/src/lib/libcrypto/bn/exptest.c
@@ -59,30 +59,37 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include "bio.h"
-#include "bn.h"
-#include "rand.h"
-#include "err.h"
-#ifdef WINDOWS
+#include <openssl/bio.h>
+#include <openssl/bn.h>
+#include <openssl/rand.h>
+#include <openssl/err.h>
+#ifdef OPENSSL_SYS_WINDOWS
 #include "../bio/bss_file.c"
 #endif
 
 #define NUM_BITS        (BN_BITS*2)
 
-int main(argc,argv)
-int argc;
-char *argv[];
+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,*a,*b,*m;
+        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();
@@ -114,29 +121,61 @@ char *argv[];
 
                 ret=BN_mod_exp_mont(r_mont,a,b,m,ctx,NULL);
                 if (ret <= 0)
-                        { printf("BN_mod_exp_mont() problems\n"); exit(1); }
+                        {
+                        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"); exit(1); }
-                
-                if (BN_cmp(r_mont,r_recp) != 0)
                         {
-                        printf("\nmont and recp results differ\n");
+                        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);
                         }
-                else
-                        {
-                        printf(".");
-                        fflush(stdout);
-                        }
                 }
+        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: