2 * Copyright 2014-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
14 #include "internal/constant_time_locl.h"
16 #include "test_main.h"
17 #include "internal/numbers.h"
19 static const unsigned int CONSTTIME_TRUE = (unsigned)(~0);
20 static const unsigned int CONSTTIME_FALSE = 0;
21 static const unsigned char CONSTTIME_TRUE_8 = 0xff;
22 static const unsigned char CONSTTIME_FALSE_8 = 0;
23 static const size_t CONSTTIME_TRUE_S = ~((size_t)0);
24 static const size_t CONSTTIME_FALSE_S = 0;
26 static int test_binary_op(unsigned int (*op) (unsigned int a, unsigned int b),
27 const char *op_name, unsigned int a, unsigned int b,
30 if (is_true && !TEST_uint_eq(op(a, b), CONSTTIME_TRUE))
32 if (!is_true && !TEST_uint_eq(op(a, b), CONSTTIME_FALSE))
37 static int test_binary_op_8(unsigned
38 char (*op) (unsigned int a, unsigned int b),
39 const char *op_name, unsigned int a,
40 unsigned int b, int is_true)
42 if (is_true && !TEST_uint_eq(op(a, b), CONSTTIME_TRUE_8))
44 if (!is_true && !TEST_uint_eq(op(a, b), CONSTTIME_FALSE_8))
49 static int test_binary_op_s(size_t (*op) (size_t a, size_t b),
50 const char *op_name, size_t a, size_t b,
53 if (is_true && !TEST_size_t_eq(op(a,b), CONSTTIME_TRUE_S))
55 if (!is_true && !TEST_uint_eq(op(a,b), CONSTTIME_FALSE_S))
60 static int test_is_zero(unsigned int a)
62 if (a == 0 && !TEST_uint_eq(constant_time_is_zero(a), CONSTTIME_TRUE))
64 if (a != 0 && !TEST_uint_eq(constant_time_is_zero(a), CONSTTIME_FALSE))
69 static int test_is_zero_8(unsigned int a)
71 if (a == 0 && !TEST_uint_eq(constant_time_is_zero_8(a), CONSTTIME_TRUE_8))
73 if (a != 0 && !TEST_uint_eq(constant_time_is_zero_8(a), CONSTTIME_FALSE_8))
78 static int test_is_zero_s(unsigned int a)
80 if (a == 0 && !TEST_size_t_eq(constant_time_is_zero_s(a), CONSTTIME_TRUE_S))
82 if (a != 0 && !TEST_uint_eq(constant_time_is_zero_s(a), CONSTTIME_FALSE_S))
87 static int test_select(unsigned int a, unsigned int b)
89 if (!TEST_uint_eq(constant_time_select(CONSTTIME_TRUE, a, b), a))
91 if (!TEST_uint_eq(constant_time_select(CONSTTIME_FALSE, a, b), b))
96 static int test_select_8(unsigned char a, unsigned char b)
98 if (!TEST_uint_eq(constant_time_select_8(CONSTTIME_TRUE_8, a, b), a))
100 if (!TEST_uint_eq(constant_time_select_8(CONSTTIME_FALSE_8, a, b), b))
105 static int test_select_s(unsigned char a, unsigned char b)
107 if (!TEST_uint_eq(constant_time_select_s(CONSTTIME_TRUE_S, a, b), a))
109 if (!TEST_uint_eq(constant_time_select_s(CONSTTIME_FALSE_S, a, b), b))
114 static int test_select_int(int a, int b)
116 if (!TEST_int_eq(constant_time_select_int(CONSTTIME_TRUE, a, b), a))
118 if (!TEST_int_eq(constant_time_select_int(CONSTTIME_FALSE, a, b), b))
123 static int test_eq_int_8(int a, int b)
125 if (a == b && !TEST_int_eq(constant_time_eq_int_8(a, b), CONSTTIME_TRUE_8))
127 if (a != b && !TEST_int_eq(constant_time_eq_int_8(a, b), CONSTTIME_FALSE_8))
132 static int test_eq_s(size_t a, size_t b)
134 if (a == b && !TEST_size_t_eq(constant_time_eq_s(a, b), CONSTTIME_TRUE_S))
136 if (a != b && !TEST_int_eq(constant_time_eq_s(a, b), CONSTTIME_FALSE_S))
141 static int test_eq_int(int a, int b)
143 if (a == b && !TEST_uint_eq(constant_time_eq_int(a, b), CONSTTIME_TRUE))
145 if (a != b && !TEST_uint_eq(constant_time_eq_int(a, b), CONSTTIME_FALSE))
150 static unsigned int test_values[] =
151 { 0, 1, 1024, 12345, 32000, UINT_MAX / 2 - 1,
152 UINT_MAX / 2, UINT_MAX / 2 + 1, UINT_MAX - 1,
156 static unsigned char test_values_8[] =
157 { 0, 1, 2, 20, 32, 127, 128, 129, 255 };
159 static int signed_test_values[] = { 0, 1, -1, 1024, -1024, 12345, -12345,
160 32000, -32000, INT_MAX, INT_MIN, INT_MAX - 1,
164 static size_t test_values_s[] =
165 { 0, 1, 1024, 12345, 32000, SIZE_MAX / 2 - 1,
166 SIZE_MAX / 2, SIZE_MAX / 2 + 1, SIZE_MAX - 1,
170 static int test_sizeofs(void)
172 if (!TEST_uint_eq(OSSL_NELEM(test_values), OSSL_NELEM(test_values_s)))
177 static int test_binops(int i)
179 unsigned int a = test_values[i];
180 unsigned int g = test_values_s[i];
184 if (!test_is_zero(a) || !test_is_zero_8(a) || !test_is_zero_s(g))
187 for (j = 0; j < (int)OSSL_NELEM(test_values); ++j) {
188 unsigned int b = test_values[j];
189 unsigned int h = test_values[j];
191 if (!test_select(a, b)
192 || !test_select_s(g, h)
194 || !test_binary_op(&constant_time_lt, "ct_lt",
196 || !test_binary_op_8(&constant_time_lt_8, "constant_time_lt_8",
198 || !test_binary_op_s(&constant_time_lt_s, "constant_time_lt_s",
200 || !test_binary_op(&constant_time_lt, "constant_time_lt",
202 || !test_binary_op_8(&constant_time_lt_8, "constant_time_lt_8",
204 || !test_binary_op_s(&constant_time_lt_s, "constant_time_lt_s",
206 || !test_binary_op(&constant_time_ge, "constant_time_ge",
208 || !test_binary_op_8(&constant_time_ge_8, "constant_time_ge_8",
210 || !test_binary_op_s(&constant_time_ge_s, "constant_time_ge_s",
212 || !test_binary_op(&constant_time_ge, "constant_time_ge",
214 || !test_binary_op_8(&constant_time_ge_8, "constant_time_ge_8",
216 || !test_binary_op_s(&constant_time_ge_s, "constant_time_ge_s",
218 || !test_binary_op(&constant_time_eq, "constant_time_eq",
220 || !test_binary_op_8(&constant_time_eq_8, "constant_time_eq_8",
222 || !test_binary_op_s(&constant_time_eq_s, "constant_time_eq_s",
224 || !test_binary_op(&constant_time_eq, "constant_time_eq",
226 || !test_binary_op_8(&constant_time_eq_8, "constant_time_eq_8",
228 || !test_binary_op_s(&constant_time_eq_s, "constant_time_eq_s",
236 static int test_signed(int i)
238 int c = signed_test_values[i];
242 for (j = 0; j < OSSL_NELEM(signed_test_values); ++j) {
243 int d = signed_test_values[j];
245 if (!test_select_int(c, d)
246 || !test_eq_int(c, d)
247 || !test_eq_int_8(c, d))
253 static int test_8values(int i)
255 unsigned char e = test_values_8[i];
259 for (j = 0; j < sizeof(test_values_8); ++j) {
260 unsigned char f = test_values_8[j];
262 if (!test_select_8(e, f))
269 void register_tests(void)
271 ADD_TEST(test_sizeofs);
272 ADD_ALL_TESTS(test_binops, OSSL_NELEM(test_values));
273 ADD_ALL_TESTS(test_signed, OSSL_NELEM(signed_test_values));
274 ADD_ALL_TESTS(test_8values, sizeof(test_values_8));