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/*
* Copyright 2014-2017 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include <stdlib.h>
#include "internal/nelem.h"
#include "internal/constant_time_locl.h"
#include "testutil.h"
#include "internal/numbers.h"
static const unsigned int CONSTTIME_TRUE = (unsigned)(~0);
static const unsigned int CONSTTIME_FALSE = 0;
static const unsigned char CONSTTIME_TRUE_8 = 0xff;
static const unsigned char CONSTTIME_FALSE_8 = 0;
static const size_t CONSTTIME_TRUE_S = ~((size_t)0);
static const size_t CONSTTIME_FALSE_S = 0;
static uint64_t CONSTTIME_TRUE_64 = (uint64_t)(~(uint64_t)0);
static uint64_t CONSTTIME_FALSE_64 = 0;
static int test_binary_op(unsigned int (*op) (unsigned int a, unsigned int b),
const char *op_name, unsigned int a, unsigned int b,
int is_true)
{
if (is_true && !TEST_uint_eq(op(a, b), CONSTTIME_TRUE))
return 0;
if (!is_true && !TEST_uint_eq(op(a, b), CONSTTIME_FALSE))
return 0;
return 1;
}
static int test_binary_op_8(unsigned
char (*op) (unsigned int a, unsigned int b),
const char *op_name, unsigned int a,
unsigned int b, int is_true)
{
if (is_true && !TEST_uint_eq(op(a, b), CONSTTIME_TRUE_8))
return 0;
if (!is_true && !TEST_uint_eq(op(a, b), CONSTTIME_FALSE_8))
return 0;
return 1;
}
static int test_binary_op_s(size_t (*op) (size_t a, size_t b),
const char *op_name, size_t a, size_t b,
int is_true)
{
if (is_true && !TEST_size_t_eq(op(a,b), CONSTTIME_TRUE_S))
return 0;
if (!is_true && !TEST_uint_eq(op(a,b), CONSTTIME_FALSE_S))
return 0;
return 1;
}
static int test_binary_op_64(uint64_t (*op)(uint64_t a, uint64_t b),
const char *op_name, uint64_t a, uint64_t b,
int is_true)
{
uint64_t c = op(a, b);
if (is_true && c != CONSTTIME_TRUE_64) {
TEST_error("TRUE %s op failed", op_name);
BIO_printf(bio_err, "a=%jx b=%jx\n", a, b);
return 0;
} else if (!is_true && c != CONSTTIME_FALSE_64) {
TEST_error("FALSE %s op failed", op_name);
BIO_printf(bio_err, "a=%jx b=%jx\n", a, b);
return 0;
}
return 1;
}
static int test_is_zero(unsigned int a)
{
if (a == 0 && !TEST_uint_eq(constant_time_is_zero(a), CONSTTIME_TRUE))
return 0;
if (a != 0 && !TEST_uint_eq(constant_time_is_zero(a), CONSTTIME_FALSE))
return 0;
return 1;
}
static int test_is_zero_8(unsigned int a)
{
if (a == 0 && !TEST_uint_eq(constant_time_is_zero_8(a), CONSTTIME_TRUE_8))
return 0;
if (a != 0 && !TEST_uint_eq(constant_time_is_zero_8(a), CONSTTIME_FALSE_8))
return 0;
return 1;
}
static int test_is_zero_s(unsigned int a)
{
if (a == 0 && !TEST_size_t_eq(constant_time_is_zero_s(a), CONSTTIME_TRUE_S))
return 0;
if (a != 0 && !TEST_uint_eq(constant_time_is_zero_s(a), CONSTTIME_FALSE_S))
return 0;
return 1;
}
static int test_select(unsigned int a, unsigned int b)
{
if (!TEST_uint_eq(constant_time_select(CONSTTIME_TRUE, a, b), a))
return 0;
if (!TEST_uint_eq(constant_time_select(CONSTTIME_FALSE, a, b), b))
return 0;
return 1;
}
static int test_select_8(unsigned char a, unsigned char b)
{
if (!TEST_uint_eq(constant_time_select_8(CONSTTIME_TRUE_8, a, b), a))
return 0;
if (!TEST_uint_eq(constant_time_select_8(CONSTTIME_FALSE_8, a, b), b))
return 0;
return 1;
}
static int test_select_s(unsigned char a, unsigned char b)
{
if (!TEST_uint_eq(constant_time_select_s(CONSTTIME_TRUE_S, a, b), a))
return 0;
if (!TEST_uint_eq(constant_time_select_s(CONSTTIME_FALSE_S, a, b), b))
return 0;
return 1;
}
static int test_select_64(uint64_t a, uint64_t b)
{
uint64_t selected = constant_time_select_64(CONSTTIME_TRUE_64, a, b);
if (selected != a) {
TEST_error("test_select_64 TRUE failed");
BIO_printf(bio_err, "a=%jx b=%jx got %jx wanted a\n", a, b, selected);
return 0;
}
selected = constant_time_select_64(CONSTTIME_FALSE_64, a, b);
if (selected != b) {
BIO_printf(bio_err, "a=%jx b=%jx got %jx wanted b\n", a, b, selected);
return 0;
}
return 1;
}
static int test_select_int(int a, int b)
{
if (!TEST_int_eq(constant_time_select_int(CONSTTIME_TRUE, a, b), a))
return 0;
if (!TEST_int_eq(constant_time_select_int(CONSTTIME_FALSE, a, b), b))
return 0;
return 1;
}
static int test_eq_int_8(int a, int b)
{
if (a == b && !TEST_int_eq(constant_time_eq_int_8(a, b), CONSTTIME_TRUE_8))
return 0;
if (a != b && !TEST_int_eq(constant_time_eq_int_8(a, b), CONSTTIME_FALSE_8))
return 0;
return 1;
}
static int test_eq_s(size_t a, size_t b)
{
if (a == b && !TEST_size_t_eq(constant_time_eq_s(a, b), CONSTTIME_TRUE_S))
return 0;
if (a != b && !TEST_int_eq(constant_time_eq_s(a, b), CONSTTIME_FALSE_S))
return 0;
return 1;
}
static int test_eq_int(int a, int b)
{
if (a == b && !TEST_uint_eq(constant_time_eq_int(a, b), CONSTTIME_TRUE))
return 0;
if (a != b && !TEST_uint_eq(constant_time_eq_int(a, b), CONSTTIME_FALSE))
return 0;
return 1;
}
static unsigned int test_values[] = {
0, 1, 1024, 12345, 32000, UINT_MAX / 2 - 1,
UINT_MAX / 2, UINT_MAX / 2 + 1, UINT_MAX - 1,
UINT_MAX
};
static unsigned char test_values_8[] = {
0,
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