X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=test%2Fconstant_time_test.c;h=200cb376c5d306cf8789db9568131b476c331574;hp=bdb270209e4a7c93877b4e5efa1a77a563a24de6;hb=a8ea8018fa187e22fb4989450b550589e20f62c2;hpb=bdcb1a2cf553166edec0509f4bf3cd36fc964024 diff --git a/test/constant_time_test.c b/test/constant_time_test.c index bdb270209e..200cb376c5 100644 --- a/test/constant_time_test.c +++ b/test/constant_time_test.c @@ -1,75 +1,38 @@ -/* crypto/constant_time_test.c */ -/*- - * Utilities for constant-time cryptography. +/* + * Copyright 2014-2017 The OpenSSL Project Authors. All Rights Reserved. * - * Author: Emilia Kasper (emilia@openssl.org) - * Based on previous work by Bodo Moeller, Emilia Kasper, Adam Langley - * (Google). - * ==================================================================== - * Copyright (c) 2014 The OpenSSL Project. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * "This product includes cryptographic software written by - * Eric Young (eay@cryptsoft.com)" - * The word 'cryptographic' can be left out if the rouines from the library - * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from - * the apps directory (application code) you must include an acknowledgement: - * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * - * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * The licence and distribution terms for any publically available version or - * derivative of this code cannot be changed. i.e. this code cannot simply be - * copied and put under another distribution licence - * [including the GNU Public Licence.] + * 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 "../crypto/constant_time_locl.h" - -#include #include #include +#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) { - unsigned c = op(a, b); - if (is_true && c != CONSTTIME_TRUE) { - fprintf(stderr, "Test failed for %s(%du, %du): expected %du " - "(TRUE), got %du\n", op_name, a, b, CONSTTIME_TRUE, c); - return 1; - } else if (!is_true && c != CONSTTIME_FALSE) { - fprintf(stderr, "Test failed for %s(%du, %du): expected %du " - "(FALSE), got %du\n", op_name, a, b, CONSTTIME_FALSE, c); - return 1; - } - return 0; + 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 @@ -77,228 +40,299 @@ static int test_binary_op_8(unsigned const char *op_name, unsigned int a, unsigned int b, int is_true) { - unsigned char c = op(a, b); - if (is_true && c != CONSTTIME_TRUE_8) { - fprintf(stderr, "Test failed for %s(%du, %du): expected %u " - "(TRUE), got %u\n", op_name, a, b, CONSTTIME_TRUE_8, c); - return 1; - } else if (!is_true && c != CONSTTIME_FALSE_8) { - fprintf(stderr, "Test failed for %s(%du, %du): expected %u " - "(FALSE), got %u\n", op_name, a, b, CONSTTIME_FALSE_8, c); - return 1; + 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 0; + return 1; } + static int test_is_zero(unsigned int a) { - unsigned int c = constant_time_is_zero(a); - if (a == 0 && c != CONSTTIME_TRUE) { - fprintf(stderr, "Test failed for constant_time_is_zero(%du): " - "expected %du (TRUE), got %du\n", a, CONSTTIME_TRUE, c); - return 1; - } else if (a != 0 && c != CONSTTIME_FALSE) { - fprintf(stderr, "Test failed for constant_time_is_zero(%du): " - "expected %du (FALSE), got %du\n", a, CONSTTIME_FALSE, c); - return 1; - } - return 0; + 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) { - unsigned char c = constant_time_is_zero_8(a); - if (a == 0 && c != CONSTTIME_TRUE_8) { - fprintf(stderr, "Test failed for constant_time_is_zero(%du): " - "expected %u (TRUE), got %u\n", a, CONSTTIME_TRUE_8, c); - return 1; - } else if (a != 0 && c != CONSTTIME_FALSE) { - fprintf(stderr, "Test failed for constant_time_is_zero(%du): " - "expected %u (FALSE), got %u\n", a, CONSTTIME_FALSE_8, c); - return 1; - } - return 0; + 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) { - unsigned int selected = constant_time_select(CONSTTIME_TRUE, a, b); - if (selected != a) { - fprintf(stderr, "Test failed for constant_time_select(%du, %du," - "%du): expected %du(first value), got %du\n", - CONSTTIME_TRUE, a, b, a, selected); - return 1; - } - selected = constant_time_select(CONSTTIME_FALSE, a, b); - if (selected != b) { - fprintf(stderr, "Test failed for constant_time_select(%du, %du," - "%du): expected %du(second value), got %du\n", - CONSTTIME_FALSE, a, b, b, selected); - return 1; - } - return 0; + 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) { - unsigned char selected = constant_time_select_8(CONSTTIME_TRUE_8, a, b); - if (selected != a) { - fprintf(stderr, "Test failed for constant_time_select(%u, %u," - "%u): expected %u(first value), got %u\n", - CONSTTIME_TRUE, a, b, a, selected); - return 1; - } - selected = constant_time_select_8(CONSTTIME_FALSE_8, a, b); - if (selected != b) { - fprintf(stderr, "Test failed for constant_time_select(%u, %u," - "%u): expected %u(second value), got %u\n", - CONSTTIME_FALSE, a, b, b, selected); - return 1; - } - return 0; + 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_int(int a, int b) +static int test_select_s(unsigned char a, unsigned char b) { - int selected = constant_time_select_int(CONSTTIME_TRUE, a, 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) { - fprintf(stderr, "Test failed for constant_time_select(%du, %d," - "%d): expected %d(first value), got %d\n", - CONSTTIME_TRUE, a, b, a, selected); - return 1; + 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_int(CONSTTIME_FALSE, a, b); + selected = constant_time_select_64(CONSTTIME_FALSE_64, a, b); if (selected != b) { - fprintf(stderr, "Test failed for constant_time_select(%du, %d," - "%d): expected %d(second value), got %d\n", - CONSTTIME_FALSE, a, b, b, selected); - return 1; + BIO_printf(bio_err, "a=%jx b=%jx got %jx wanted b\n", a, b, selected); + return 0; } - return 0; + return 1; } -static int test_eq_int(int a, int b) +static int test_select_int(int a, int b) { - unsigned int equal = constant_time_eq_int(a, b); - if (a == b && equal != CONSTTIME_TRUE) { - fprintf(stderr, "Test failed for constant_time_eq_int(%d, %d): " - "expected %du(TRUE), got %du\n", a, b, CONSTTIME_TRUE, equal); - return 1; - } else if (a != b && equal != CONSTTIME_FALSE) { - fprintf(stderr, "Test failed for constant_time_eq_int(%d, %d): " - "expected %du(FALSE), got %du\n", - a, b, CONSTTIME_FALSE, equal); - return 1; - } - return 0; + 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) { - unsigned char equal = constant_time_eq_int_8(a, b); - if (a == b && equal != CONSTTIME_TRUE_8) { - fprintf(stderr, "Test failed for constant_time_eq_int_8(%d, %d): " - "expected %u(TRUE), got %u\n", a, b, CONSTTIME_TRUE_8, equal); - return 1; - } else if (a != b && equal != CONSTTIME_FALSE_8) { - fprintf(stderr, "Test failed for constant_time_eq_int_8(%d, %d): " - "expected %u(FALSE), got %u\n", - a, b, CONSTTIME_FALSE_8, equal); - return 1; - } - return 0; + 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 unsigned int test_values[] = - { 0, 1, 1024, 12345, 32000, UINT_MAX / 2 - 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, 1, 2, 20, 32, 127, 128, 129, 255 }; +static unsigned char test_values_8[] = { + 0, 1, 2, 20, 32, 127, 128, 129, 255 +}; -static int signed_test_values[] = { 0, 1, -1, 1024, -1024, 12345, -12345, +static int signed_test_values[] = { + 0, 1, -1, 1024, -1024, 12345, -12345, 32000, -32000, INT_MAX, INT_MIN, INT_MAX - 1, INT_MIN + 1 }; -int main(int argc, char *argv[]) +static size_t test_values_s[] = { + 0, 1, 1024, 12345, 32000, SIZE_MAX / 2 - 1, + SIZE_MAX / 2, SIZE_MAX / 2 + 1, SIZE_MAX - 1, + SIZE_MAX +}; + +static uint64_t test_values_64[] = { + 0, 1, 1024, 12345, 32000, 32000000, 32000000001, UINT64_MAX / 2, + UINT64_MAX / 2 + 1, UINT64_MAX - 1, UINT64_MAX +}; + +static int test_sizeofs(void) { - unsigned int a, b, i, j; - int c, d; - unsigned char e, f; - int num_failed = 0, num_all = 0; - fprintf(stdout, "Testing constant time operations...\n"); - - for (i = 0; i < OSSL_NELEM(test_values); ++i) { - a = test_values[i]; - num_failed += test_is_zero(a); - num_failed += test_is_zero_8(a); - num_all += 2; - for (j = 0; j < OSSL_NELEM(test_values); ++j) { - b = test_values[j]; - num_failed += test_binary_op(&constant_time_lt, - "constant_time_lt", a, b, a < b); - num_failed += test_binary_op_8(&constant_time_lt_8, - "constant_time_lt_8", a, b, a < b); - num_failed += test_binary_op(&constant_time_lt, - "constant_time_lt_8", b, a, b < a); - num_failed += test_binary_op_8(&constant_time_lt_8, - "constant_time_lt_8", b, a, b < a); - num_failed += test_binary_op(&constant_time_ge, - "constant_time_ge", a, b, a >= b); - num_failed += test_binary_op_8(&constant_time_ge_8, - "constant_time_ge_8", a, b, - a >= b); - num_failed += - test_binary_op(&constant_time_ge, "constant_time_ge", b, a, - b >= a); - num_failed += - test_binary_op_8(&constant_time_ge_8, "constant_time_ge_8", b, - a, b >= a); - num_failed += - test_binary_op(&constant_time_eq, "constant_time_eq", a, b, - a == b); - num_failed += - test_binary_op_8(&constant_time_eq_8, "constant_time_eq_8", a, - b, a == b); - num_failed += - test_binary_op(&constant_time_eq, "constant_time_eq", b, a, - b == a); - num_failed += - test_binary_op_8(&constant_time_eq_8, "constant_time_eq_8", b, - a, b == a); - num_failed += test_select(a, b); - num_all += 13; + if (!TEST_uint_eq(OSSL_NELEM(test_values), OSSL_NELEM(test_values_s))) + return 0; + return 1; +} + +static int test_binops(int i) +{ + unsigned int a = test_values[i]; + unsigned int g = test_values_s[i]; + int j; + int ret = 1; + + if (!test_is_zero(a) || !test_is_zero_8(a) || !test_is_zero_s(g)) + ret = 0; + + for (j = 0; j < (int)OSSL_NELEM(test_values); ++j) { + unsigned int b = test_values[j]; + unsigned int h = test_values[j]; + + if (!test_select(a, b) + || !test_select_s(g, h) + || !test_eq_s(g, h) + || !test_binary_op(&constant_time_lt, "ct_lt", + a, b, a < b) + || !test_binary_op_8(&constant_time_lt_8, "constant_time_lt_8", + a, b, a < b) + || !test_binary_op_s(&constant_time_lt_s, "constant_time_lt_s", + g, h, g < h) + || !test_binary_op(&constant_time_lt, "constant_time_lt", + b, a, b < a) + || !test_binary_op_8(&constant_time_lt_8, "constant_time_lt_8", + b, a, b < a) + || !test_binary_op_s(&constant_time_lt_s, "constant_time_lt_s", + h, g, h < g) + || !test_binary_op(&constant_time_ge, "constant_time_ge", + a, b, a >= b) + || !test_binary_op_8(&constant_time_ge_8, "constant_time_ge_8", + a, b, a >= b) + || !test_binary_op_s(&constant_time_ge_s, "constant_time_ge_s", + g, h, g >= h) + || !test_binary_op(&constant_time_ge, "constant_time_ge", + b, a, b >= a) + || !test_binary_op_8(&constant_time_ge_8, "constant_time_ge_8", + b, a, b >= a) + || !test_binary_op_s(&constant_time_ge_s, "constant_time_ge_s", + h, g, h >= g) + || !test_binary_op(&constant_time_eq, "constant_time_eq", + a, b, a == b) + || !test_binary_op_8(&constant_time_eq_8, "constant_time_eq_8", + a, b, a == b) + || !test_binary_op_s(&constant_time_eq_s, "constant_time_eq_s", + g, h, g == h) + || !test_binary_op(&constant_time_eq, "constant_time_eq", + b, a, b == a) + || !test_binary_op_8(&constant_time_eq_8, "constant_time_eq_8", + b, a, b == a) + || !test_binary_op_s(&constant_time_eq_s, "constant_time_eq_s", + h, g, h == g)) { + ret = 0; } } + return ret; +} - for (i = 0; i < OSSL_NELEM(signed_test_values); ++i) { - c = signed_test_values[i]; - for (j = 0; j < OSSL_NELEM(signed_test_values); ++j) { - d = signed_test_values[j]; - num_failed += test_select_int(c, d); - num_failed += test_eq_int(c, d); - num_failed += test_eq_int_8(c, d); - num_all += 3; - } +static int test_signed(int i) +{ + int c = signed_test_values[i]; + unsigned int j; + int ret = 1; + + for (j = 0; j < OSSL_NELEM(signed_test_values); ++j) { + int d = signed_test_values[j]; + + if (!test_select_int(c, d) + || !test_eq_int(c, d) + || !test_eq_int_8(c, d)) + ret = 0; } + return ret; +} - for (i = 0; i < sizeof(test_values_8); ++i) { - e = test_values_8[i]; - for (j = 0; j < sizeof(test_values_8); ++j) { - f = test_values_8[j]; - num_failed += test_select_8(e, f); - num_all += 1; - } +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_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 (!num_failed) { - fprintf(stdout, "ok (ran %d tests)\n", num_all); - return EXIT_SUCCESS; - } else { - fprintf(stdout, "%d of %d tests failed!\n", num_failed, num_all); - return EXIT_FAILURE; + 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_binops, OSSL_NELEM(test_values)); + ADD_ALL_TESTS(test_signed, OSSL_NELEM(signed_test_values)); + ADD_ALL_TESTS(test_8values, OSSL_NELEM(test_values_8)); + ADD_ALL_TESTS(test_64values, OSSL_NELEM(test_values_64)); + return 1; }