Compare with BN_mod_exp_simple, too.

diff --git a/crypto/bn/exptest.c b/crypto/bn/exptest.c
index 08039313a2bb52b69b33a865148d8766ecdb0d74..9e4ae91d2015a89460b51b15f05fe30e9287c3e7 100644 (file)
--- a/crypto/bn/exptest.c
+++ b/crypto/bn/exptest.c
@@ -75,7 +75,7 @@ int main(int argc, char *argv[])
        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;
 
        ERR_load_BN_strings();
 
@@ -83,6 +83,7 @@ int main(int argc, char *argv[])
        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();
@@ -127,23 +128,37 @@ int main(int argc, char *argv[])
                        ERR_print_errors(out);
                        exit(1);
                        }
-               
-               if (BN_cmp(r_mont,r_recp) != 0)
+
+               ret=BN_mod_exp_simple(r_simple,a,b,m,ctx);
+               if (ret <= 0)
                        {
-                       printf("\nmont and recp results differ\n");
+                       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);
-                       }
                }
        CRYPTO_mem_leaks(out);
        printf(" done\n");