2 * Copyright 2014-2018 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (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
13 #include "internal/nelem.h"
14 #include "internal/constant_time_locl.h"
16 #include "internal/numbers.h"
18 static const unsigned int CONSTTIME_TRUE = (unsigned)(~0);
19 static const unsigned int CONSTTIME_FALSE = 0;
20 static const unsigned char CONSTTIME_TRUE_8 = 0xff;
21 static const unsigned char CONSTTIME_FALSE_8 = 0;
22 static const size_t CONSTTIME_TRUE_S = ~((size_t)0);
23 static const size_t CONSTTIME_FALSE_S = 0;
24 static uint32_t CONSTTIME_TRUE_32 = (uint32_t)(~(uint32_t)0);
25 static uint32_t CONSTTIME_FALSE_32 = 0;
26 static uint64_t CONSTTIME_TRUE_64 = (uint64_t)(~(uint64_t)0);
27 static uint64_t CONSTTIME_FALSE_64 = 0;
29 static unsigned int test_values[] = {
30 0, 1, 1024, 12345, 32000, UINT_MAX / 2 - 1,
31 UINT_MAX / 2, UINT_MAX / 2 + 1, UINT_MAX - 1,
35 static unsigned char test_values_8[] = {
36 0, 1, 2, 20, 32, 127, 128, 129, 255
39 static int signed_test_values[] = {
40 0, 1, -1, 1024, -1024, 12345, -12345,
41 32000, -32000, INT_MAX, INT_MIN, INT_MAX - 1,
45 static size_t test_values_s[] = {
46 0, 1, 1024, 12345, 32000, SIZE_MAX / 2 - 1,
47 SIZE_MAX / 2, SIZE_MAX / 2 + 1, SIZE_MAX - 1,
51 static uint32_t test_values_32[] = {
52 0, 1, 1024, 12345, 32000, UINT32_MAX / 2, UINT32_MAX / 2 + 1,
53 UINT32_MAX - 1, UINT32_MAX
56 static uint64_t test_values_64[] = {
57 0, 1, 1024, 12345, 32000, 32000000, 32000000001, UINT64_MAX / 2,
58 UINT64_MAX / 2 + 1, UINT64_MAX - 1, UINT64_MAX
61 static int test_binary_op(unsigned int (*op) (unsigned int a, unsigned int b),
62 const char *op_name, unsigned int a, unsigned int b,
65 if (is_true && !TEST_uint_eq(op(a, b), CONSTTIME_TRUE))
67 if (!is_true && !TEST_uint_eq(op(a, b), CONSTTIME_FALSE))
72 static int test_binary_op_8(unsigned
73 char (*op) (unsigned int a, unsigned int b),
74 const char *op_name, unsigned int a,
75 unsigned int b, int is_true)
77 if (is_true && !TEST_uint_eq(op(a, b), CONSTTIME_TRUE_8))
79 if (!is_true && !TEST_uint_eq(op(a, b), CONSTTIME_FALSE_8))
84 static int test_binary_op_s(size_t (*op) (size_t a, size_t b),
85 const char *op_name, size_t a, size_t b,
88 if (is_true && !TEST_size_t_eq(op(a,b), CONSTTIME_TRUE_S))
90 if (!is_true && !TEST_uint_eq(op(a,b), CONSTTIME_FALSE_S))
95 static int test_binary_op_64(uint64_t (*op)(uint64_t a, uint64_t b),
96 const char *op_name, uint64_t a, uint64_t b,
99 uint64_t c = op(a, b);
101 if (is_true && c != CONSTTIME_TRUE_64) {
102 TEST_error("TRUE %s op failed", op_name);
103 BIO_printf(bio_err, "a=%jx b=%jx\n", a, b);
105 } else if (!is_true && c != CONSTTIME_FALSE_64) {
106 TEST_error("FALSE %s op failed", op_name);
107 BIO_printf(bio_err, "a=%jx b=%jx\n", a, b);
113 static int test_is_zero(int i)
115 unsigned int a = test_values[i];
117 if (a == 0 && !TEST_uint_eq(constant_time_is_zero(a), CONSTTIME_TRUE))
119 if (a != 0 && !TEST_uint_eq(constant_time_is_zero(a), CONSTTIME_FALSE))
124 static int test_is_zero_8(int i)
126 unsigned int a = test_values_8[i];
128 if (a == 0 && !TEST_uint_eq(constant_time_is_zero_8(a), CONSTTIME_TRUE_8))
130 if (a != 0 && !TEST_uint_eq(constant_time_is_zero_8(a), CONSTTIME_FALSE_8))
135 static int test_is_zero_32(int i)
137 uint32_t a = test_values_32[i];
139 if (a == 0 && !TEST_true(constant_time_is_zero_32(a) == CONSTTIME_TRUE_32))
141 if (a != 0 && !TEST_true(constant_time_is_zero_32(a) == CONSTTIME_FALSE_32))
146 static int test_is_zero_s(int i)
148 size_t a = test_values_s[i];
150 if (a == 0 && !TEST_size_t_eq(constant_time_is_zero_s(a), CONSTTIME_TRUE_S))
152 if (a != 0 && !TEST_uint_eq(constant_time_is_zero_s(a), CONSTTIME_FALSE_S))
157 static int test_select(unsigned int a, unsigned int b)
159 if (!TEST_uint_eq(constant_time_select(CONSTTIME_TRUE, a, b), a))
161 if (!TEST_uint_eq(constant_time_select(CONSTTIME_FALSE, a, b), b))
166 static int test_select_8(unsigned char a, unsigned char b)
168 if (!TEST_uint_eq(constant_time_select_8(CONSTTIME_TRUE_8, a, b), a))
170 if (!TEST_uint_eq(constant_time_select_8(CONSTTIME_FALSE_8, a, b), b))
175 static int test_select_32(uint32_t a, uint32_t b)
177 if (!TEST_true(constant_time_select_32(CONSTTIME_TRUE_32, a, b) == a))
179 if (!TEST_true(constant_time_select_32(CONSTTIME_FALSE_32, a, b) == b))
184 static int test_select_s(size_t a, size_t b)
186 if (!TEST_uint_eq(constant_time_select_s(CONSTTIME_TRUE_S, a, b), a))
188 if (!TEST_uint_eq(constant_time_select_s(CONSTTIME_FALSE_S, a, b), b))
193 static int test_select_64(uint64_t a, uint64_t b)
195 uint64_t selected = constant_time_select_64(CONSTTIME_TRUE_64, a, b);
198 TEST_error("test_select_64 TRUE failed");
199 BIO_printf(bio_err, "a=%jx b=%jx got %jx wanted a\n", a, b, selected);
202 selected = constant_time_select_64(CONSTTIME_FALSE_64, a, b);
204 BIO_printf(bio_err, "a=%jx b=%jx got %jx wanted b\n", a, b, selected);
210 static int test_select_int(int a, int b)
212 if (!TEST_int_eq(constant_time_select_int(CONSTTIME_TRUE, a, b), a))
214 if (!TEST_int_eq(constant_time_select_int(CONSTTIME_FALSE, a, b), b))
219 static int test_eq_int_8(int a, int b)
221 if (a == b && !TEST_int_eq(constant_time_eq_int_8(a, b), CONSTTIME_TRUE_8))
223 if (a != b && !TEST_int_eq(constant_time_eq_int_8(a, b), CONSTTIME_FALSE_8))
228 static int test_eq_s(size_t a, size_t b)
230 if (a == b && !TEST_size_t_eq(constant_time_eq_s(a, b), CONSTTIME_TRUE_S))
232 if (a != b && !TEST_int_eq(constant_time_eq_s(a, b), CONSTTIME_FALSE_S))
237 static int test_eq_int(int a, int b)
239 if (a == b && !TEST_uint_eq(constant_time_eq_int(a, b), CONSTTIME_TRUE))
241 if (a != b && !TEST_uint_eq(constant_time_eq_int(a, b), CONSTTIME_FALSE))
246 static int test_sizeofs(void)
248 if (!TEST_uint_eq(OSSL_NELEM(test_values), OSSL_NELEM(test_values_s)))
253 static int test_binops(int i)
255 unsigned int a = test_values[i];
259 for (j = 0; j < (int)OSSL_NELEM(test_values); ++j) {
260 unsigned int b = test_values[j];
262 if (!test_select(a, b)
263 || !test_binary_op(&constant_time_lt, "ct_lt",
265 || !test_binary_op(&constant_time_lt, "constant_time_lt",
267 || !test_binary_op(&constant_time_ge, "constant_time_ge",
269 || !test_binary_op(&constant_time_ge, "constant_time_ge",
271 || !test_binary_op(&constant_time_eq, "constant_time_eq",
273 || !test_binary_op(&constant_time_eq, "constant_time_eq",
280 static int test_binops_8(int i)
282 unsigned int a = test_values_8[i];
286 for (j = 0; j < (int)OSSL_NELEM(test_values_8); ++j) {
287 unsigned int b = test_values_8[j];
289 if (!test_binary_op_8(&constant_time_lt_8, "constant_time_lt_8",
291 || !test_binary_op_8(&constant_time_lt_8, "constant_time_lt_8",
293 || !test_binary_op_8(&constant_time_ge_8, "constant_time_ge_8",
295 || !test_binary_op_8(&constant_time_ge_8, "constant_time_ge_8",
297 || !test_binary_op_8(&constant_time_eq_8, "constant_time_eq_8",
299 || !test_binary_op_8(&constant_time_eq_8, "constant_time_eq_8",
306 static int test_binops_s(int i)
308 size_t a = test_values_s[i];
312 for (j = 0; j < (int)OSSL_NELEM(test_values_s); ++j) {
313 size_t b = test_values_s[j];
315 if (!test_select_s(a, b)
317 || !test_binary_op_s(&constant_time_lt_s, "constant_time_lt_s",
319 || !test_binary_op_s(&constant_time_lt_s, "constant_time_lt_s",
321 || !test_binary_op_s(&constant_time_ge_s, "constant_time_ge_s",
323 || !test_binary_op_s(&constant_time_ge_s, "constant_time_ge_s",
325 || !test_binary_op_s(&constant_time_eq_s, "constant_time_eq_s",
327 || !test_binary_op_s(&constant_time_eq_s, "constant_time_eq_s",
334 static int test_signed(int i)
336 int c = signed_test_values[i];
340 for (j = 0; j < OSSL_NELEM(signed_test_values); ++j) {
341 int d = signed_test_values[j];
343 if (!test_select_int(c, d)
344 || !test_eq_int(c, d)
345 || !test_eq_int_8(c, d))
351 static int test_8values(int i)
353 unsigned char e = test_values_8[i];
357 for (j = 0; j < sizeof(test_values_8); ++j) {
358 unsigned char f = test_values_8[j];
360 if (!test_select_8(e, f))
366 static int test_32values(int i)
368 uint32_t e = test_values_32[i];
372 for (j = 0; j < OSSL_NELEM(test_values_32); j++) {
373 uint32_t f = test_values_32[j];
375 if (!test_select_32(e, f))
381 static int test_64values(int i)
383 uint64_t g = test_values_64[i];
386 for (j = i + 1; j < (int)OSSL_NELEM(test_values_64); j++) {
387 uint64_t h = test_values_64[j];
389 if (!test_binary_op_64(&constant_time_lt_64, "constant_time_lt_64",
391 || !test_select_64(g, h)) {
392 TEST_info("test_64values failed i=%d j=%d", i, j);
399 int setup_tests(void)
401 ADD_TEST(test_sizeofs);
402 ADD_ALL_TESTS(test_is_zero, OSSL_NELEM(test_values));
403 ADD_ALL_TESTS(test_is_zero_8, OSSL_NELEM(test_values_8));
404 ADD_ALL_TESTS(test_is_zero_32, OSSL_NELEM(test_values_32));
405 ADD_ALL_TESTS(test_is_zero_s, OSSL_NELEM(test_values_s));
406 ADD_ALL_TESTS(test_binops, OSSL_NELEM(test_values));
407 ADD_ALL_TESTS(test_binops_8, OSSL_NELEM(test_values_8));
408 ADD_ALL_TESTS(test_binops_s, OSSL_NELEM(test_values_s));
409 ADD_ALL_TESTS(test_signed, OSSL_NELEM(signed_test_values));
410 ADD_ALL_TESTS(test_8values, OSSL_NELEM(test_values_8));
411 ADD_ALL_TESTS(test_32values, OSSL_NELEM(test_values_32));
412 ADD_ALL_TESTS(test_64values, OSSL_NELEM(test_values_64));