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Diffstat (limited to 'crypto/constant_time_test.c')
-rw-r--r-- | crypto/constant_time_test.c | 304 |
1 files changed, 0 insertions, 304 deletions
diff --git a/crypto/constant_time_test.c b/crypto/constant_time_test.c deleted file mode 100644 index d313d0c7a9..0000000000 --- a/crypto/constant_time_test.c +++ /dev/null @@ -1,304 +0,0 @@ -/* crypto/constant_time_test.c */ -/*- - * Utilities for constant-time cryptography. - * - * 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.] - */ - -#include "../crypto/constant_time_locl.h" - -#include <limits.h> -#include <stdio.h> -#include <stdlib.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 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; -} - -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) -{ - 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; - } - return 0; -} - -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; -} - -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; -} - -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; -} - -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; -} - -static int test_select_int(int a, int b) -{ - int selected = constant_time_select_int(CONSTTIME_TRUE, 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; - } - selected = constant_time_select_int(CONSTTIME_FALSE, 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; - } - return 0; -} - -static int test_eq_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; -} - -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; -} - -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 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[]) -{ - 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 < sizeof(test_values) / sizeof(int); ++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 < sizeof(test_values) / sizeof(int); ++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; - } - } - - for (i = 0; i < sizeof(signed_test_values) / sizeof(int); ++i) { - c = signed_test_values[i]; - for (j = 0; j < sizeof(signed_test_values) / sizeof(int); ++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; - } - } - - 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; - } - } - - 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; - } -} |