Commit a79b03ce authored by Ulf Möller's avatar Ulf Möller
Browse files

Compare with BN_mod_exp_simple, too.

parent d575d292

crypto/bn/exptest.c

+24 −9
Original line number Diff line number Diff line
@@ -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();
@@ -128,22 +129,36 @@ int main(int argc, char *argv[]) 
			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");