415 lines
12 KiB
C
415 lines
12 KiB
C
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/*
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* Copyright 2014-2018 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "internal/nelem.h"
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#include "internal/constant_time.h"
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#include "testutil.h"
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#include "internal/numbers.h"
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static const unsigned int CONSTTIME_TRUE = (unsigned)(~0);
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static const unsigned int CONSTTIME_FALSE = 0;
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static const unsigned char CONSTTIME_TRUE_8 = 0xff;
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static const unsigned char CONSTTIME_FALSE_8 = 0;
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static const size_t CONSTTIME_TRUE_S = ~((size_t)0);
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static const size_t CONSTTIME_FALSE_S = 0;
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static uint32_t CONSTTIME_TRUE_32 = (uint32_t)(~(uint32_t)0);
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static uint32_t CONSTTIME_FALSE_32 = 0;
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static uint64_t CONSTTIME_TRUE_64 = (uint64_t)(~(uint64_t)0);
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static uint64_t CONSTTIME_FALSE_64 = 0;
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static unsigned int test_values[] = {
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0, 1, 1024, 12345, 32000, UINT_MAX / 2 - 1,
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UINT_MAX / 2, UINT_MAX / 2 + 1, UINT_MAX - 1,
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UINT_MAX
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};
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static unsigned char test_values_8[] = {
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0, 1, 2, 20, 32, 127, 128, 129, 255
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};
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static int signed_test_values[] = {
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0, 1, -1, 1024, -1024, 12345, -12345,
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32000, -32000, INT_MAX, INT_MIN, INT_MAX - 1,
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INT_MIN + 1
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};
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static size_t test_values_s[] = {
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0, 1, 1024, 12345, 32000, SIZE_MAX / 2 - 1,
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SIZE_MAX / 2, SIZE_MAX / 2 + 1, SIZE_MAX - 1,
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SIZE_MAX
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};
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static uint32_t test_values_32[] = {
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0, 1, 1024, 12345, 32000, UINT32_MAX / 2, UINT32_MAX / 2 + 1,
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UINT32_MAX - 1, UINT32_MAX
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};
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static uint64_t test_values_64[] = {
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0, 1, 1024, 12345, 32000, 32000000, 32000000001, UINT64_MAX / 2,
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UINT64_MAX / 2 + 1, UINT64_MAX - 1, UINT64_MAX
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};
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static int test_binary_op(unsigned int (*op) (unsigned int a, unsigned int b),
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const char *op_name, unsigned int a, unsigned int b,
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int is_true)
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{
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if (is_true && !TEST_uint_eq(op(a, b), CONSTTIME_TRUE))
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return 0;
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if (!is_true && !TEST_uint_eq(op(a, b), CONSTTIME_FALSE))
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return 0;
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return 1;
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}
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static int test_binary_op_8(unsigned
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char (*op) (unsigned int a, unsigned int b),
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const char *op_name, unsigned int a,
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unsigned int b, int is_true)
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{
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if (is_true && !TEST_uint_eq(op(a, b), CONSTTIME_TRUE_8))
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return 0;
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if (!is_true && !TEST_uint_eq(op(a, b), CONSTTIME_FALSE_8))
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return 0;
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return 1;
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}
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static int test_binary_op_s(size_t (*op) (size_t a, size_t b),
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const char *op_name, size_t a, size_t b,
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int is_true)
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{
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if (is_true && !TEST_size_t_eq(op(a,b), CONSTTIME_TRUE_S))
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return 0;
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if (!is_true && !TEST_uint_eq(op(a,b), CONSTTIME_FALSE_S))
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return 0;
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return 1;
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}
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static int test_binary_op_64(uint64_t (*op)(uint64_t a, uint64_t b),
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const char *op_name, uint64_t a, uint64_t b,
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int is_true)
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{
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uint64_t c = op(a, b);
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if (is_true && c != CONSTTIME_TRUE_64) {
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TEST_error("TRUE %s op failed", op_name);
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BIO_printf(bio_err, "a=%jx b=%jx\n", a, b);
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return 0;
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} else if (!is_true && c != CONSTTIME_FALSE_64) {
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TEST_error("FALSE %s op failed", op_name);
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BIO_printf(bio_err, "a=%jx b=%jx\n", a, b);
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return 0;
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}
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return 1;
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}
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static int test_is_zero(int i)
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{
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unsigned int a = test_values[i];
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if (a == 0 && !TEST_uint_eq(constant_time_is_zero(a), CONSTTIME_TRUE))
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return 0;
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if (a != 0 && !TEST_uint_eq(constant_time_is_zero(a), CONSTTIME_FALSE))
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return 0;
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return 1;
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}
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static int test_is_zero_8(int i)
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{
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unsigned int a = test_values_8[i];
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if (a == 0 && !TEST_uint_eq(constant_time_is_zero_8(a), CONSTTIME_TRUE_8))
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return 0;
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if (a != 0 && !TEST_uint_eq(constant_time_is_zero_8(a), CONSTTIME_FALSE_8))
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return 0;
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return 1;
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}
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static int test_is_zero_32(int i)
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{
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uint32_t a = test_values_32[i];
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if (a == 0 && !TEST_true(constant_time_is_zero_32(a) == CONSTTIME_TRUE_32))
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return 0;
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if (a != 0 && !TEST_true(constant_time_is_zero_32(a) == CONSTTIME_FALSE_32))
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return 0;
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return 1;
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}
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static int test_is_zero_s(int i)
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{
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size_t a = test_values_s[i];
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if (a == 0 && !TEST_size_t_eq(constant_time_is_zero_s(a), CONSTTIME_TRUE_S))
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return 0;
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if (a != 0 && !TEST_uint_eq(constant_time_is_zero_s(a), CONSTTIME_FALSE_S))
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return 0;
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return 1;
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}
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static int test_select(unsigned int a, unsigned int b)
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{
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if (!TEST_uint_eq(constant_time_select(CONSTTIME_TRUE, a, b), a))
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return 0;
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if (!TEST_uint_eq(constant_time_select(CONSTTIME_FALSE, a, b), b))
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return 0;
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return 1;
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}
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static int test_select_8(unsigned char a, unsigned char b)
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{
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if (!TEST_uint_eq(constant_time_select_8(CONSTTIME_TRUE_8, a, b), a))
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return 0;
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if (!TEST_uint_eq(constant_time_select_8(CONSTTIME_FALSE_8, a, b), b))
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return 0;
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return 1;
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}
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static int test_select_32(uint32_t a, uint32_t b)
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{
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if (!TEST_true(constant_time_select_32(CONSTTIME_TRUE_32, a, b) == a))
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return 0;
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if (!TEST_true(constant_time_select_32(CONSTTIME_FALSE_32, a, b) == b))
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return 0;
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return 1;
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}
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static int test_select_s(size_t a, size_t b)
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{
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if (!TEST_uint_eq(constant_time_select_s(CONSTTIME_TRUE_S, a, b), a))
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return 0;
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if (!TEST_uint_eq(constant_time_select_s(CONSTTIME_FALSE_S, a, b), b))
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return 0;
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return 1;
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}
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static int test_select_64(uint64_t a, uint64_t b)
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{
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uint64_t selected = constant_time_select_64(CONSTTIME_TRUE_64, a, b);
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if (selected != a) {
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TEST_error("test_select_64 TRUE failed");
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BIO_printf(bio_err, "a=%jx b=%jx got %jx wanted a\n", a, b, selected);
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return 0;
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}
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selected = constant_time_select_64(CONSTTIME_FALSE_64, a, b);
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if (selected != b) {
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BIO_printf(bio_err, "a=%jx b=%jx got %jx wanted b\n", a, b, selected);
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return 0;
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}
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return 1;
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}
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static int test_select_int(int a, int b)
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{
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if (!TEST_int_eq(constant_time_select_int(CONSTTIME_TRUE, a, b), a))
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return 0;
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if (!TEST_int_eq(constant_time_select_int(CONSTTIME_FALSE, a, b), b))
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return 0;
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return 1;
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}
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static int test_eq_int_8(int a, int b)
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{
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if (a == b && !TEST_int_eq(constant_time_eq_int_8(a, b), CONSTTIME_TRUE_8))
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return 0;
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if (a != b && !TEST_int_eq(constant_time_eq_int_8(a, b), CONSTTIME_FALSE_8))
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return 0;
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return 1;
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}
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static int test_eq_s(size_t a, size_t b)
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{
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if (a == b && !TEST_size_t_eq(constant_time_eq_s(a, b), CONSTTIME_TRUE_S))
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return 0;
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if (a != b && !TEST_int_eq(constant_time_eq_s(a, b), CONSTTIME_FALSE_S))
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return 0;
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return 1;
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}
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static int test_eq_int(int a, int b)
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{
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if (a == b && !TEST_uint_eq(constant_time_eq_int(a, b), CONSTTIME_TRUE))
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return 0;
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if (a != b && !TEST_uint_eq(constant_time_eq_int(a, b), CONSTTIME_FALSE))
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return 0;
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return 1;
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}
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static int test_sizeofs(void)
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{
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if (!TEST_uint_eq(OSSL_NELEM(test_values), OSSL_NELEM(test_values_s)))
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return 0;
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return 1;
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}
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static int test_binops(int i)
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{
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unsigned int a = test_values[i];
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int j;
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int ret = 1;
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for (j = 0; j < (int)OSSL_NELEM(test_values); ++j) {
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unsigned int b = test_values[j];
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if (!test_select(a, b)
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|| !test_binary_op(&constant_time_lt, "ct_lt",
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a, b, a < b)
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|| !test_binary_op(&constant_time_lt, "constant_time_lt",
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b, a, b < a)
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|| !test_binary_op(&constant_time_ge, "constant_time_ge",
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a, b, a >= b)
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|| !test_binary_op(&constant_time_ge, "constant_time_ge",
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b, a, b >= a)
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|| !test_binary_op(&constant_time_eq, "constant_time_eq",
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a, b, a == b)
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|| !test_binary_op(&constant_time_eq, "constant_time_eq",
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b, a, b == a))
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ret = 0;
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}
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return ret;
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}
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static int test_binops_8(int i)
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{
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unsigned int a = test_values_8[i];
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int j;
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int ret = 1;
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for (j = 0; j < (int)OSSL_NELEM(test_values_8); ++j) {
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unsigned int b = test_values_8[j];
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if (!test_binary_op_8(&constant_time_lt_8, "constant_time_lt_8",
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a, b, a < b)
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|| !test_binary_op_8(&constant_time_lt_8, "constant_time_lt_8",
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b, a, b < a)
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|| !test_binary_op_8(&constant_time_ge_8, "constant_time_ge_8",
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a, b, a >= b)
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|| !test_binary_op_8(&constant_time_ge_8, "constant_time_ge_8",
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b, a, b >= a)
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|| !test_binary_op_8(&constant_time_eq_8, "constant_time_eq_8",
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a, b, a == b)
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|| !test_binary_op_8(&constant_time_eq_8, "constant_time_eq_8",
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b, a, b == a))
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ret = 0;
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}
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return ret;
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}
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static int test_binops_s(int i)
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{
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size_t a = test_values_s[i];
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int j;
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int ret = 1;
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for (j = 0; j < (int)OSSL_NELEM(test_values_s); ++j) {
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size_t b = test_values_s[j];
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if (!test_select_s(a, b)
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|| !test_eq_s(a, b)
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|| !test_binary_op_s(&constant_time_lt_s, "constant_time_lt_s",
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a, b, a < b)
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|| !test_binary_op_s(&constant_time_lt_s, "constant_time_lt_s",
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b, a, b < a)
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|| !test_binary_op_s(&constant_time_ge_s, "constant_time_ge_s",
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a, b, a >= b)
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|| !test_binary_op_s(&constant_time_ge_s, "constant_time_ge_s",
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b, a, b >= a)
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|| !test_binary_op_s(&constant_time_eq_s, "constant_time_eq_s",
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a, b, a == b)
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|| !test_binary_op_s(&constant_time_eq_s, "constant_time_eq_s",
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b, a, b == a))
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ret = 0;
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}
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return ret;
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}
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static int test_signed(int i)
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{
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int c = signed_test_values[i];
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unsigned int j;
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int ret = 1;
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for (j = 0; j < OSSL_NELEM(signed_test_values); ++j) {
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int d = signed_test_values[j];
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if (!test_select_int(c, d)
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|| !test_eq_int(c, d)
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|| !test_eq_int_8(c, d))
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ret = 0;
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|
}
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int test_8values(int i)
|
||
|
|
{
|
||
|
|
unsigned char e = test_values_8[i];
|
||
|
|
unsigned int j;
|
||
|
|
int ret = 1;
|
||
|
|
|
||
|
|
for (j = 0; j < sizeof(test_values_8); ++j) {
|
||
|
|
unsigned char f = test_values_8[j];
|
||
|
|
|
||
|
|
if (!test_select_8(e, f))
|
||
|
|
ret = 0;
|
||
|
|
}
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int test_32values(int i)
|
||
|
|
{
|
||
|
|
uint32_t e = test_values_32[i];
|
||
|
|
size_t j;
|
||
|
|
int ret = 1;
|
||
|
|
|
||
|
|
for (j = 0; j < OSSL_NELEM(test_values_32); j++) {
|
||
|
|
uint32_t f = test_values_32[j];
|
||
|
|
|
||
|
|
if (!test_select_32(e, f))
|
||
|
|
ret = 0;
|
||
|
|
}
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int test_64values(int i)
|
||
|
|
{
|
||
|
|
uint64_t g = test_values_64[i];
|
||
|
|
int j, ret = 1;
|
||
|
|
|
||
|
|
for (j = i + 1; j < (int)OSSL_NELEM(test_values_64); j++) {
|
||
|
|
uint64_t h = test_values_64[j];
|
||
|
|
|
||
|
|
if (!test_binary_op_64(&constant_time_lt_64, "constant_time_lt_64",
|
||
|
|
g, h, g < h)
|
||
|
|
|| !test_select_64(g, h)) {
|
||
|
|
TEST_info("test_64values failed i=%d j=%d", i, j);
|
||
|
|
ret = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
int setup_tests(void)
|
||
|
|
{
|
||
|
|
ADD_TEST(test_sizeofs);
|
||
|
|
ADD_ALL_TESTS(test_is_zero, OSSL_NELEM(test_values));
|
||
|
|
ADD_ALL_TESTS(test_is_zero_8, OSSL_NELEM(test_values_8));
|
||
|
|
ADD_ALL_TESTS(test_is_zero_32, OSSL_NELEM(test_values_32));
|
||
|
|
ADD_ALL_TESTS(test_is_zero_s, OSSL_NELEM(test_values_s));
|
||
|
|
ADD_ALL_TESTS(test_binops, OSSL_NELEM(test_values));
|
||
|
|
ADD_ALL_TESTS(test_binops_8, OSSL_NELEM(test_values_8));
|
||
|
|
ADD_ALL_TESTS(test_binops_s, OSSL_NELEM(test_values_s));
|
||
|
|
ADD_ALL_TESTS(test_signed, OSSL_NELEM(signed_test_values));
|
||
|
|
ADD_ALL_TESTS(test_8values, OSSL_NELEM(test_values_8));
|
||
|
|
ADD_ALL_TESTS(test_32values, OSSL_NELEM(test_values_32));
|
||
|
|
ADD_ALL_TESTS(test_64values, OSSL_NELEM(test_values_64));
|
||
|
|
return 1;
|
||
|
|
}
|