David Brown | fecda2d | 2017-09-07 10:20:34 -0600 | [diff] [blame] | 1 | /* test_cmac_mode.c - TinyCrypt AES-CMAC tests (including SP 800-38B tests) */ |
| 2 | |
| 3 | /* |
Fabio Utzig | 3efe6b6 | 2017-09-22 16:03:24 -0300 | [diff] [blame] | 4 | * Copyright (C) 2017 by Intel Corporation, All Rights Reserved. |
David Brown | fecda2d | 2017-09-07 10:20:34 -0600 | [diff] [blame] | 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions are met: |
| 8 | * |
| 9 | * - Redistributions of source code must retain the above copyright notice, |
| 10 | * this list of conditions and the following disclaimer. |
| 11 | * |
| 12 | * - Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * - Neither the name of Intel Corporation nor the names of its contributors |
| 17 | * may be used to endorse or promote products derived from this software |
| 18 | * without specific prior written permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 21 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 24 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 25 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 26 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 30 | * POSSIBILITY OF SUCH DAMAGE. |
| 31 | */ |
| 32 | /* |
| 33 | * DESCRIPTION |
| 34 | * This module tests the following AES-CMAC test (including SP 800-38B): |
| 35 | * |
| 36 | * Scenarios tested include: |
| 37 | * - CMAC test #1 (GF(2^128) double)) |
| 38 | * - CMAC test #2 null msg (SP 800-38B test vector #1) |
| 39 | * - CMAC test #3 1 block msg (SP 800-38B test vector #2) |
| 40 | * - CMAC test #4 320 bit msg (SP 800-38B test vector #3) |
Fabio Utzig | 3efe6b6 | 2017-09-22 16:03:24 -0300 | [diff] [blame] | 41 | * - CMAC test #5 512 bit msg (SP 800-38B test vector #4) |
David Brown | fecda2d | 2017-09-07 10:20:34 -0600 | [diff] [blame] | 42 | */ |
| 43 | |
| 44 | #include <tinycrypt/cmac_mode.h> |
| 45 | #include <tinycrypt/constants.h> |
| 46 | #include <tinycrypt/aes.h> |
| 47 | #include <test_utils.h> |
| 48 | |
| 49 | #include <stdio.h> |
| 50 | #include <string.h> |
| 51 | |
| 52 | #define BUF_LEN 16 |
| 53 | |
| 54 | static void show(const char *label, const uint8_t *s, size_t slen) |
| 55 | { |
Fabio Utzig | 3efe6b6 | 2017-09-22 16:03:24 -0300 | [diff] [blame] | 56 | unsigned int i; |
David Brown | fecda2d | 2017-09-07 10:20:34 -0600 | [diff] [blame] | 57 | |
| 58 | TC_PRINT("%s\t", label); |
| 59 | for (i = 0; i < slen; ++i) { |
| 60 | TC_PRINT("%02x", s[i]); |
| 61 | } |
| 62 | TC_PRINT("\n"); |
| 63 | } |
| 64 | |
| 65 | extern void gf_double(uint8_t *out, uint8_t *in); |
| 66 | |
| 67 | static int verify_gf_2_128_double(uint8_t *K1, uint8_t *K2, |
Fabio Utzig | 3efe6b6 | 2017-09-22 16:03:24 -0300 | [diff] [blame] | 68 | struct tc_cmac_struct s) |
David Brown | fecda2d | 2017-09-07 10:20:34 -0600 | [diff] [blame] | 69 | { |
| 70 | int result = TC_PASS; |
| 71 | |
| 72 | TC_PRINT("Performing CMAC test #1 (GF(2^128) double):\n"); |
| 73 | |
| 74 | uint8_t zero[BUF_LEN]; |
| 75 | uint8_t L[BUF_LEN]; |
| 76 | const uint8_t l[BUF_LEN] = { |
| 77 | 0x7d, 0xf7, 0x6b, 0x0c, 0x1a, 0xb8, 0x99, 0xb3, |
| 78 | 0x3e, 0x42, 0xf0, 0x47, 0xb9, 0x1b, 0x54, 0x6f |
| 79 | }; |
| 80 | const uint8_t k1[BUF_LEN] = { |
| 81 | 0xfb, 0xee, 0xd6, 0x18, 0x35, 0x71, 0x33, 0x66, |
| 82 | 0x7c, 0x85, 0xe0, 0x8f, 0x72, 0x36, 0xa8, 0xde |
| 83 | }; |
| 84 | const uint8_t k2[BUF_LEN] = { |
| 85 | 0xf7, 0xdd, 0xac, 0x30, 0x6a, 0xe2, 0x66, 0xcc, |
| 86 | 0xf9, 0x0b, 0xc1, 0x1e, 0xe4, 0x6d, 0x51, 0x3b |
| 87 | }; |
| 88 | |
| 89 | (void) memset(zero, '\0', sizeof(zero)); |
| 90 | tc_aes_encrypt(L, zero, s.sched); |
| 91 | if (memcmp(L, l, BUF_LEN) != 0) { |
| 92 | TC_ERROR("%s: AES encryption failed\n", __func__); |
| 93 | show("expected L =", l, sizeof(l)); |
| 94 | show("computed L =", L, sizeof(L)); |
| 95 | return TC_FAIL; |
| 96 | } |
| 97 | |
| 98 | gf_double(K1, L); |
| 99 | if (memcmp(K1, k1, BUF_LEN) != 0) { |
| 100 | TC_ERROR("%s: gf_2_128_double failed when msb = 0\n", __func__); |
| 101 | show("expected K1 =", k1, sizeof(k1)); |
| 102 | show("computed K1 =", K1, sizeof(k1)); |
| 103 | return TC_FAIL; |
| 104 | } |
| 105 | |
| 106 | gf_double(K2, K1); |
| 107 | if (memcmp(K2, k2, BUF_LEN) != 0) { |
| 108 | TC_ERROR("%s: gf_2_128_double failed when msb = 1\n", __func__); |
| 109 | show("expected K2 =", k2, sizeof(k2)); |
| 110 | show("computed K2 =", K2, sizeof(k2)); |
| 111 | return TC_FAIL; |
| 112 | } |
| 113 | |
| 114 | TC_END_RESULT(result); |
| 115 | return result; |
| 116 | } |
| 117 | |
| 118 | static int verify_cmac_null_msg(TCCmacState_t s) |
| 119 | { |
| 120 | int result = TC_PASS; |
| 121 | |
| 122 | TC_PRINT("Performing CMAC test #2 (SP 800-38B test vector #1):\n"); |
| 123 | |
| 124 | const uint8_t tag[BUF_LEN] = { |
| 125 | 0xbb, 0x1d, 0x69, 0x29, 0xe9, 0x59, 0x37, 0x28, |
| 126 | 0x7f, 0xa3, 0x7d, 0x12, 0x9b, 0x75, 0x67, 0x46 |
| 127 | }; |
| 128 | uint8_t Tag[BUF_LEN]; |
| 129 | |
| 130 | (void) tc_cmac_init(s); |
| 131 | (void) tc_cmac_update(s, (const uint8_t *) 0, 0); |
| 132 | (void) tc_cmac_final(Tag, s); |
| 133 | |
| 134 | if (memcmp(Tag, tag, BUF_LEN) != 0) { |
| 135 | TC_ERROR("%s: aes_cmac failed with null msg = 1\n", __func__); |
| 136 | show("expected Tag =", tag, sizeof(tag)); |
| 137 | show("computed Tag =", Tag, sizeof(Tag)); |
| 138 | return TC_FAIL; |
| 139 | } |
| 140 | |
| 141 | TC_END_RESULT(result); |
| 142 | return result; |
| 143 | } |
| 144 | |
| 145 | static int verify_cmac_1_block_msg(TCCmacState_t s) |
| 146 | { |
| 147 | int result = TC_PASS; |
| 148 | |
| 149 | TC_PRINT("Performing CMAC test #3 (SP 800-38B test vector #2):\n"); |
| 150 | |
| 151 | const uint8_t msg[BUF_LEN] = { |
| 152 | 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, |
| 153 | 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a |
| 154 | }; |
| 155 | const uint8_t tag[BUF_LEN] = { |
| 156 | 0x07, 0x0a, 0x16, 0xb4, 0x6b, 0x4d, 0x41, 0x44, |
| 157 | 0xf7, 0x9b, 0xdd, 0x9d, 0xd0, 0x4a, 0x28, 0x7c |
| 158 | }; |
| 159 | uint8_t Tag[BUF_LEN]; |
| 160 | |
| 161 | (void) tc_cmac_init(s); |
| 162 | (void) tc_cmac_update(s, msg, sizeof(msg)); |
| 163 | (void) tc_cmac_final(Tag, s); |
| 164 | |
| 165 | if (memcmp(Tag, tag, BUF_LEN) != 0) { |
| 166 | TC_ERROR("%s: aes_cmac failed with 1 block msg\n", __func__); |
| 167 | show("aes_cmac failed with 1 block msg =", msg, sizeof(msg)); |
| 168 | show("expected Tag =", tag, sizeof(tag)); |
| 169 | show("computed Tag =", Tag, sizeof(Tag)); |
| 170 | return TC_FAIL; |
| 171 | } |
| 172 | |
| 173 | TC_END_RESULT(result); |
| 174 | return result; |
| 175 | } |
| 176 | |
| 177 | static int verify_cmac_320_bit_msg(TCCmacState_t s) |
| 178 | { |
| 179 | int result = TC_PASS; |
| 180 | |
| 181 | TC_PRINT("Performing CMAC test #4 (SP 800-38B test vector #3):\n"); |
| 182 | |
| 183 | const uint8_t msg[40] = { |
| 184 | 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, |
| 185 | 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a, |
| 186 | 0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, |
| 187 | 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51, |
| 188 | 0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11 |
| 189 | }; |
| 190 | const uint8_t tag[BUF_LEN] = { |
| 191 | 0xdf, 0xa6, 0x67, 0x47, 0xde, 0x9a, 0xe6, 0x30, |
| 192 | 0x30, 0xca, 0x32, 0x61, 0x14, 0x97, 0xc8, 0x27 |
| 193 | }; |
| 194 | uint8_t Tag[BUF_LEN]; |
| 195 | |
| 196 | (void) tc_cmac_init(s); |
| 197 | (void) tc_cmac_update(s, msg, sizeof(msg)); |
| 198 | (void) tc_cmac_final(Tag, s); |
| 199 | |
| 200 | if (memcmp(Tag, tag, BUF_LEN) != 0) { |
| 201 | TC_ERROR("%s: aes_cmac failed with 320 bit msg\n", __func__); |
| 202 | show("aes_cmac failed with 320 bit msg =", msg, sizeof(msg)); |
| 203 | show("expected Tag =", tag, sizeof(tag)); |
| 204 | show("computed Tag =", Tag, sizeof(Tag)); |
| 205 | return TC_FAIL; |
| 206 | } |
| 207 | |
| 208 | TC_END_RESULT(result); |
| 209 | return result; |
| 210 | } |
| 211 | |
| 212 | static int verify_cmac_512_bit_msg(TCCmacState_t s) |
| 213 | { |
| 214 | int result = TC_PASS; |
| 215 | |
| 216 | TC_PRINT("Performing CMAC test #5 (SP 800-38B test vector #4)\n"); |
| 217 | |
| 218 | const uint8_t msg[64] = { |
| 219 | 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, |
| 220 | 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a, |
| 221 | 0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, |
| 222 | 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51, |
| 223 | 0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, |
| 224 | 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef, |
| 225 | 0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, |
| 226 | 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10 |
| 227 | }; |
| 228 | const uint8_t tag[BUF_LEN] = { |
| 229 | 0x51, 0xf0, 0xbe, 0xbf, 0x7e, 0x3b, 0x9d, 0x92, |
| 230 | 0xfc, 0x49, 0x74, 0x17, 0x79, 0x36, 0x3c, 0xfe |
| 231 | }; |
| 232 | uint8_t Tag[BUF_LEN]; |
| 233 | |
| 234 | (void)tc_cmac_init(s); |
| 235 | (void)tc_cmac_update(s, msg, sizeof(msg)); |
| 236 | (void)tc_cmac_final(Tag, s); |
| 237 | |
| 238 | if (memcmp(Tag, tag, BUF_LEN) != 0) { |
| 239 | TC_ERROR("%s: aes_cmac failed with 512 bit msg\n", __func__); |
| 240 | show("aes_cmac failed with 512 bit msg =", msg, sizeof(msg)); |
| 241 | show("expected Tag =", tag, sizeof(tag)); |
| 242 | show("computed Tag =", Tag, sizeof(Tag)); |
| 243 | return TC_FAIL; |
| 244 | } |
| 245 | |
| 246 | TC_END_RESULT(result); |
| 247 | return result; |
| 248 | } |
| 249 | |
| 250 | /* |
| 251 | * Main task to test CMAC |
Fabio Utzig | 3efe6b6 | 2017-09-22 16:03:24 -0300 | [diff] [blame] | 252 | * effects: returns 1 if all tests pass |
| 253 | * exceptions: returns a negative value if some test fails |
David Brown | fecda2d | 2017-09-07 10:20:34 -0600 | [diff] [blame] | 254 | */ |
| 255 | int main(void) |
| 256 | { |
| 257 | |
| 258 | int result = TC_PASS; |
| 259 | |
| 260 | struct tc_cmac_struct state; |
| 261 | struct tc_aes_key_sched_struct sched; |
| 262 | |
| 263 | const uint8_t key[BUF_LEN] = { |
| 264 | 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, |
| 265 | 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c |
| 266 | }; |
| 267 | uint8_t K1[BUF_LEN], K2[BUF_LEN]; |
| 268 | |
| 269 | TC_START("Performing CMAC tests:"); |
| 270 | |
| 271 | (void) tc_cmac_setup(&state, key, &sched); |
| 272 | result = verify_gf_2_128_double(K1, K2, state); |
Fabio Utzig | 3efe6b6 | 2017-09-22 16:03:24 -0300 | [diff] [blame] | 273 | if (result == TC_FAIL) { |
| 274 | /* terminate test */ |
David Brown | fecda2d | 2017-09-07 10:20:34 -0600 | [diff] [blame] | 275 | TC_ERROR("CMAC test #1 (128 double) failed.\n"); |
| 276 | goto exitTest; |
| 277 | } |
| 278 | (void) tc_cmac_setup(&state, key, &sched); |
| 279 | result = verify_cmac_null_msg(&state); |
Fabio Utzig | 3efe6b6 | 2017-09-22 16:03:24 -0300 | [diff] [blame] | 280 | if (result == TC_FAIL) { |
| 281 | /* terminate test */ |
David Brown | fecda2d | 2017-09-07 10:20:34 -0600 | [diff] [blame] | 282 | TC_ERROR("CMAC test #2 (null msg) failed.\n"); |
| 283 | goto exitTest; |
| 284 | } |
| 285 | (void) tc_cmac_setup(&state, key, &sched); |
| 286 | result = verify_cmac_1_block_msg(&state); |
Fabio Utzig | 3efe6b6 | 2017-09-22 16:03:24 -0300 | [diff] [blame] | 287 | if (result == TC_FAIL) { |
| 288 | /* terminate test */ |
David Brown | fecda2d | 2017-09-07 10:20:34 -0600 | [diff] [blame] | 289 | TC_ERROR("CMAC test #3 (1 block msg)failed.\n"); |
| 290 | goto exitTest; |
| 291 | } |
| 292 | (void) tc_cmac_setup(&state, key, &sched); |
| 293 | result = verify_cmac_320_bit_msg(&state); |
Fabio Utzig | 3efe6b6 | 2017-09-22 16:03:24 -0300 | [diff] [blame] | 294 | if (result == TC_FAIL) { |
| 295 | /* terminate test */ |
David Brown | fecda2d | 2017-09-07 10:20:34 -0600 | [diff] [blame] | 296 | TC_ERROR("CMAC test #4 (320 bit msg) failed.\n"); |
| 297 | goto exitTest; |
| 298 | } |
| 299 | (void) tc_cmac_setup(&state, key, &sched); |
| 300 | result = verify_cmac_512_bit_msg(&state); |
Fabio Utzig | 3efe6b6 | 2017-09-22 16:03:24 -0300 | [diff] [blame] | 301 | if (result == TC_FAIL) { |
| 302 | /* terminate test */ |
David Brown | fecda2d | 2017-09-07 10:20:34 -0600 | [diff] [blame] | 303 | TC_ERROR("CMAC test #5 (512 bit msg)failed.\n"); |
| 304 | goto exitTest; |
| 305 | } |
| 306 | |
| 307 | TC_PRINT("All CMAC tests succeeded!\n"); |
| 308 | |
| 309 | exitTest: |
| 310 | TC_END_RESULT(result); |
| 311 | TC_END_REPORT(result); |
| 312 | |
| 313 | return result; |
| 314 | } |