Line data Source code
1 : /*
2 : * Unix SMB/CIFS implementation.
3 : *
4 : * Copyright (C) 2021-2022 Andreas Schneider <asn@samba.org>
5 : *
6 : * This program is free software; you can redistribute it and/or modify
7 : * it under the terms of the GNU General Public License as published by
8 : * the Free Software Foundation; either version 3 of the License, or
9 : * (at your option) any later version.
10 : *
11 : * This program is distributed in the hope that it will be useful,
12 : * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 : * GNU General Public License for more details.
15 : *
16 : * You should have received a copy of the GNU General Public License
17 : * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 : */
19 :
20 : #include <stdarg.h>
21 : #include <stddef.h>
22 : #include <stdint.h>
23 : #include <setjmp.h>
24 : #include <cmocka.h>
25 :
26 : #include <talloc.h>
27 :
28 : #include "lib/replace/replace.h"
29 : #include "lib/util/discard.h"
30 : #include "lib/util/genrand.h"
31 : #include "lib/util/data_blob.h"
32 : #include "lib/util/talloc_stack.h"
33 : #include "lib/crypto/gnutls_helpers.h"
34 : #include "librpc/rpc/dcerpc_samr.h"
35 :
36 : #include <gnutls/gnutls.h>
37 : #include <gnutls/crypto.h>
38 :
39 : #include "lib/crypto/gnutls_aead_aes_256_cbc_hmac_sha512.c"
40 :
41 : /* The following hexdumps are from a Windows Server 2022 time trace */
42 : static const uint8_t session_key[] = {
43 : 0x96, 0x17, 0x39, 0x9c, 0xa7, 0x54, 0x9e, 0x41,
44 : 0xc4, 0x79, 0x71, 0x4b, 0xa0, 0x89, 0x5b, 0x0a
45 : };
46 :
47 : static const uint8_t salt_data[] = {
48 : 0xac, 0x9c, 0xad, 0xcb, 0x66, 0xed, 0x2d, 0x05,
49 : 0x55, 0x13, 0x18, 0xa9, 0xa5, 0x6b, 0xf9, 0x6f
50 : };
51 :
52 : static const uint8_t plaintext_data[] = {
53 : 0x14, 0x00, 0x50, 0x00, 0x61, 0x00, 0x24, 0x00,
54 : 0x24, 0x00, 0x77, 0x00, 0x30, 0x00, 0x72, 0x00,
55 : 0x64, 0x00, 0x40, 0x00, 0x32, 0x00, 0xc2, 0x34,
56 : 0x7d, 0x21, 0x79, 0x05, 0xef, 0x88, 0xd7, 0x11,
57 : 0xec, 0xe2, 0xce, 0xb5, 0xd4, 0x4d, 0x64, 0x2d,
58 : 0x15, 0x79, 0x01, 0x39, 0xb8, 0xb9, 0x89, 0x5c,
59 : 0x4e, 0x71, 0xbd, 0xf0, 0x14, 0x0c, 0x87, 0x72,
60 : 0xa5, 0xfa, 0x90, 0xbe, 0x62, 0x55, 0xad, 0x7f,
61 : 0xe9, 0x7f, 0x0d, 0x20, 0x19, 0x3a, 0x76, 0xbe,
62 : 0xb2, 0x14, 0x6d, 0x5b, 0x25, 0x1c, 0x67, 0x3a,
63 : 0x23, 0x45, 0x1f, 0x7e, 0x36, 0xa0, 0x95, 0xb7,
64 : 0xa7, 0xb1, 0x33, 0xe1, 0xc4, 0xb6, 0xe6, 0x2d,
65 : 0xd8, 0x2f, 0xe7, 0xdf, 0x01, 0xe8, 0xba, 0x02,
66 : 0x54, 0x36, 0xe9, 0xb6, 0x5e, 0x00, 0x52, 0x9e,
67 : 0x64, 0x00, 0xcb, 0x3c, 0x6d, 0x05, 0x43, 0x7d,
68 : 0x01, 0x9c, 0x22, 0x18, 0x92, 0xe7, 0xa3, 0x55,
69 : 0x65, 0x6d, 0x2e, 0xa3, 0x53, 0x6e, 0xc0, 0x67,
70 : 0x26, 0xac, 0xaa, 0x98, 0xa4, 0xcb, 0xb4, 0x49,
71 : 0x13, 0x60, 0xd4, 0x33, 0x2c, 0x77, 0x58, 0x5e,
72 : 0x50, 0x45, 0xaa, 0x1e, 0x05, 0x15, 0x18, 0x59,
73 : 0x55, 0xca, 0x14, 0x37, 0x31, 0xac, 0x63, 0xfc,
74 : 0x63, 0xa8, 0x2a, 0xa9, 0x99, 0xec, 0x49, 0x87,
75 : 0x64, 0x1d, 0x4e, 0xdd, 0xa3, 0xd0, 0xdc, 0x08,
76 : 0x00, 0x17, 0xf4, 0x2f, 0x9c, 0x4a, 0x17, 0xc7,
77 : 0xbd, 0x30, 0xb7, 0x0e, 0x81, 0xe4, 0xd5, 0x94,
78 : 0x31, 0xff, 0xd6, 0xcc, 0xc6, 0xbb, 0x39, 0xcd,
79 : 0x72, 0xfe, 0xa6, 0x3d, 0x0d, 0x88, 0x68, 0x40,
80 : 0xf8, 0x51, 0x2b, 0xe6, 0xc9, 0xaa, 0x84, 0xf3,
81 : 0xf4, 0x6e, 0x55, 0x37, 0xbf, 0x5d, 0x87, 0xce,
82 : 0xa6, 0x80, 0x4f, 0x8f, 0x8f, 0x7b, 0xe8, 0x30,
83 : 0xc3, 0x2e, 0x24, 0xc7, 0x3e, 0xf1, 0x9f, 0xa6,
84 : 0x77, 0xca, 0x04, 0xbe, 0xb5, 0xe1, 0x40, 0x59,
85 : 0x43, 0xc5, 0x30, 0xc8, 0xe7, 0xbf, 0xab, 0xfa,
86 : 0x86, 0x62, 0xd9, 0x3a, 0x8e, 0xa9, 0x34, 0x73,
87 : 0x20, 0x7b, 0x61, 0x1b, 0x0e, 0xca, 0x98, 0xec,
88 : 0xa1, 0xc1, 0x78, 0xa9, 0xa7, 0x6c, 0x8c, 0xe3,
89 : 0x21, 0x7d, 0xb9, 0x90, 0xe2, 0x73, 0x1a, 0x99,
90 : 0x1d, 0x44, 0xa8, 0xd5, 0x7f, 0x0a, 0x59, 0x47,
91 : 0xd0, 0xf5, 0x6c, 0x14, 0xff, 0x4a, 0x29, 0x20,
92 : 0xb5, 0xfc, 0xe9, 0xf0, 0xa5, 0x35, 0x9e, 0x1c,
93 : 0xa1, 0x4c, 0xec, 0xb5, 0x7d, 0x2d, 0x27, 0xff,
94 : 0x7a, 0x42, 0x18, 0xb8, 0x53, 0x4e, 0xfb, 0xec,
95 : 0xb1, 0xc1, 0x65, 0x2d, 0xa4, 0x69, 0x85, 0x56,
96 : 0x61, 0x6d, 0x21, 0x66, 0x88, 0x31, 0xdf, 0xba,
97 : 0x28, 0xc6, 0x9a, 0xf8, 0xb7, 0xf6, 0x2a, 0x43,
98 : 0xba, 0x9b, 0x84, 0x14, 0xce, 0xa9, 0xc9, 0xf5,
99 : 0x85, 0x6f, 0x31, 0x89, 0x8d, 0xfc, 0x25, 0x2e,
100 : 0x98, 0x25, 0x5a, 0x03, 0xf0, 0xb8, 0x5d, 0x4a,
101 : 0xd4, 0x4c, 0xc8, 0x62, 0x4e, 0xeb, 0x07, 0xc8,
102 : 0x5c, 0x9e, 0x63, 0x30, 0xfe, 0x9f, 0x0f, 0x96,
103 : 0xd0, 0xd7, 0x70, 0xad, 0xcd, 0x84, 0xbc, 0x1e,
104 : 0x48, 0xa0, 0x20, 0x14, 0x10, 0xa4, 0xb1, 0x5b,
105 : 0x05, 0x36, 0x9a, 0x6d, 0xb0, 0x10, 0x98, 0xbd,
106 : 0x8d, 0xa2, 0xd1, 0xb2, 0xfa, 0x23, 0x37, 0xeb,
107 : 0xb0, 0x04, 0x53, 0xcb, 0xa1, 0xa9, 0xc4, 0x88,
108 : 0xdd, 0xf9, 0x80, 0xf5, 0xa9, 0xcd, 0x7b, 0xf8,
109 : 0x77, 0x0b, 0x19, 0x84, 0x4c, 0xef, 0x2c, 0x14,
110 : 0xa1, 0xdc, 0x9f, 0x2f, 0x41, 0xd0, 0xd0, 0x33,
111 : 0x29, 0x8a, 0xb9, 0x39, 0x7e, 0xc9, 0x7f, 0xe7,
112 : 0x63, 0x64, 0xa4, 0x7b, 0x4a, 0x6a, 0x33, 0xa7,
113 : 0xaa, 0xf6, 0xca, 0x98, 0xc4, 0x9b, 0x62, 0x5b,
114 : 0xcd, 0x53, 0x82, 0xbf, 0xf0, 0x0b, 0x9c, 0xe7,
115 : 0xb2, 0x44, 0x1b, 0x88, 0x71, 0x61, 0xa1, 0x36,
116 : 0x9e, 0x7a, 0x0a, 0x3c, 0x20, 0xd8, 0xff, 0xa1,
117 : 0x23, 0x66
118 : };
119 :
120 : static const uint8_t expected_enc_key[] = {
121 : 0xd9, 0xb2, 0x8b, 0xa1, 0x15, 0x74, 0xf6, 0x5a,
122 : 0x73, 0xea, 0x82, 0xba, 0x99, 0x37, 0x54, 0x25,
123 : 0x1b, 0x27, 0x20, 0xaa, 0xa3, 0xf7, 0xd5, 0x23,
124 : 0x8f, 0x02, 0xe6, 0xe7, 0x21, 0x5b, 0xd2, 0xa9
125 : };
126 :
127 : static const uint8_t expected_mac_key[] = {
128 : 0x8a, 0x04, 0x46, 0x6d, 0x5e, 0xe6, 0x2d, 0xb8,
129 : 0x32, 0x9e, 0xab, 0xbe, 0xa4, 0x8b, 0x3f, 0x6c,
130 : 0x3c, 0x1c, 0xa1, 0xaa, 0xb8, 0xec, 0x9c, 0x43,
131 : 0xbc, 0x4b, 0x91, 0x35, 0x6f, 0x3a, 0xc4, 0xe2,
132 : 0x62, 0x9b, 0xe8, 0x12, 0x63, 0x73, 0x94, 0x2a,
133 : 0x59, 0x47, 0xfc, 0xd8, 0x78, 0x5d, 0x6d, 0x68,
134 : 0x1b, 0x9f, 0x35, 0x31, 0x90, 0x27, 0xc8, 0xab,
135 : 0x88, 0x8d, 0x80, 0xad, 0x7b, 0xea, 0xcd, 0xf5
136 : };
137 :
138 : static const uint8_t expected_auth_tag[] = {
139 : 0x0a, 0x7a, 0xaf, 0x9e, 0xc1, 0x6e, 0x03, 0x12,
140 : 0x51, 0x76, 0x04, 0xb2, 0x01, 0x17, 0xeb, 0x04,
141 : 0xf3, 0xdd, 0xe3, 0xa7, 0x90, 0xfd, 0xc0, 0xca,
142 : 0x96, 0x31, 0xbf, 0x30, 0x9e, 0xc5, 0x05, 0x5a,
143 : 0xbc, 0xa8, 0xc1, 0xba, 0x56, 0x8f, 0x97, 0x5a,
144 : 0x4e, 0x2a, 0x14, 0x0e, 0x4b, 0xf3, 0x6d, 0x9a,
145 : 0x2a, 0x6e, 0xc3, 0x5e, 0x9d, 0x51, 0x0a, 0xf6,
146 : 0xb2, 0x1b, 0xee, 0xe7, 0xf3, 0x09, 0x30, 0xc9,
147 : };
148 :
149 1 : static void torture_enc_key(void **state)
150 : {
151 1 : DATA_BLOB key = data_blob_const(session_key, sizeof(session_key));
152 1 : uint8_t enc_key[32] = {0};
153 1 : NTSTATUS status;
154 :
155 1 : status = calculate_enc_key(&key, &samr_aes256_enc_key_salt, enc_key);
156 1 : assert_true(NT_STATUS_IS_OK(status));
157 :
158 1 : assert_memory_equal(expected_enc_key, enc_key, sizeof(enc_key));
159 1 : }
160 :
161 1 : static void torture_mac_key(void **state)
162 : {
163 1 : DATA_BLOB key = data_blob_const(session_key, sizeof(session_key));
164 1 : uint8_t mac_key[64] = {0};
165 1 : NTSTATUS status;
166 :
167 1 : status = calculate_mac_key(&key, &samr_aes256_mac_key_salt, mac_key);
168 1 : assert_true(NT_STATUS_IS_OK(status));
169 :
170 1 : assert_memory_equal(expected_mac_key, mac_key, sizeof(mac_key));
171 1 : }
172 :
173 1 : static void torture_encrypt(void **state)
174 : {
175 1 : NTSTATUS status;
176 1 : TALLOC_CTX *frame = talloc_stackframe();
177 1 : DATA_BLOB cek = {
178 : .data = discard_const_p(uint8_t, session_key),
179 : .length = sizeof(session_key),
180 : };
181 1 : const DATA_BLOB plaintext = {
182 : .data = discard_const_p(uint8_t, plaintext_data),
183 : .length = sizeof(plaintext_data),
184 : };
185 1 : DATA_BLOB iv = {
186 : .data = discard_const_p(uint8_t, salt_data),
187 : .length = sizeof(salt_data),
188 : };
189 1 : DATA_BLOB ctext;
190 1 : uint8_t auth_tag[64] = {0};
191 :
192 1 : assert_int_equal(iv.length, 16);
193 :
194 1 : status = samba_gnutls_aead_aes_256_cbc_hmac_sha512_encrypt(
195 : frame,
196 : &plaintext,
197 : &cek,
198 : &samr_aes256_enc_key_salt,
199 : &samr_aes256_mac_key_salt,
200 : &iv,
201 : &ctext,
202 : auth_tag);
203 1 : assert_true(NT_STATUS_IS_OK(status));
204 1 : assert_int_equal(ctext.length, 528);
205 1 : assert_non_null(ctext.data);
206 :
207 1 : assert_memory_equal(expected_auth_tag, auth_tag, sizeof(auth_tag));
208 :
209 1 : TALLOC_FREE(frame);
210 1 : }
211 :
212 1 : static void torture_encrypt_decrypt(void **state)
213 : {
214 1 : NTSTATUS status;
215 1 : TALLOC_CTX *frame = talloc_stackframe();
216 1 : DATA_BLOB cek = data_blob_const(session_key, sizeof(session_key));
217 1 : const DATA_BLOB plaintext =
218 1 : data_blob_const(plaintext_data, sizeof(plaintext_data));
219 1 : DATA_BLOB iv = data_blob_const(salt_data, sizeof(salt_data));
220 1 : DATA_BLOB cipher_text;
221 1 : uint8_t auth_tag[64] = {0};
222 1 : DATA_BLOB plaintext_decrypted;
223 :
224 1 : status = samba_gnutls_aead_aes_256_cbc_hmac_sha512_encrypt(
225 : frame,
226 : &plaintext,
227 : &cek,
228 : &samr_aes256_enc_key_salt,
229 : &samr_aes256_mac_key_salt,
230 : &iv,
231 : &cipher_text,
232 : auth_tag);
233 1 : assert_true(NT_STATUS_IS_OK(status));
234 1 : assert_int_equal(cipher_text.length, 528);
235 1 : assert_in_range(cipher_text.length,
236 : plaintext.length,
237 : plaintext.length + 16);
238 1 : assert_non_null(cipher_text.data);
239 :
240 1 : status = samba_gnutls_aead_aes_256_cbc_hmac_sha512_decrypt(
241 : frame,
242 : &cipher_text,
243 : &cek,
244 : &samr_aes256_enc_key_salt,
245 : &samr_aes256_mac_key_salt,
246 : &iv,
247 : auth_tag,
248 : &plaintext_decrypted);
249 1 : assert_true(NT_STATUS_IS_OK(status));
250 1 : assert_non_null(plaintext_decrypted.data);
251 1 : assert_int_equal(plaintext_decrypted.length, plaintext.length);
252 1 : assert_memory_equal(plaintext_decrypted.data,
253 : plaintext.data,
254 : plaintext.length);
255 :
256 1 : TALLOC_FREE(frame);
257 1 : }
258 :
259 : /* The following hexdumps are from a Windows Server 2022 time trace */
260 : static uint8_t pbkdf2_nt_hash[] = {
261 : 0xf8, 0x48, 0x54, 0xde, 0xb8, 0x36, 0x10, 0x33,
262 : 0xca, 0xea, 0x5c, 0x95, 0x96, 0x66, 0x99, 0x38
263 : };
264 :
265 : static uint8_t pbkdf2_iv[] = {
266 : 0xd5, 0xbe, 0x4f, 0xd7, 0xb6, 0x85, 0xd1, 0xea,
267 : 0xfd, 0x3b, 0xf4, 0x29, 0x83, 0xce, 0x10, 0x44
268 : };
269 :
270 : static uint8_t expected_pbkdf2_derived_key[] = {
271 : 0xf1, 0xe6, 0xb2, 0x6a, 0x78, 0x28, 0x63, 0x05,
272 : 0x77, 0x38, 0xc9, 0x71, 0xd2, 0x05, 0x88, 0x58
273 : };
274 :
275 1 : static void torture_pbkdf2(void **state)
276 : {
277 1 : gnutls_datum_t nt_key = {
278 : .data = pbkdf2_nt_hash,
279 : .size = sizeof(pbkdf2_nt_hash),
280 : };
281 1 : gnutls_datum_t iv_datum = {
282 : .data = pbkdf2_iv,
283 : .size = sizeof(pbkdf2_iv),
284 : };
285 1 : uint64_t pbkdf2_iterations = 23533;
286 1 : uint8_t derived_key[16] = {0};
287 1 : int rc;
288 :
289 1 : rc = gnutls_pbkdf2(GNUTLS_MAC_SHA512,
290 : &nt_key,
291 : &iv_datum,
292 : pbkdf2_iterations,
293 : derived_key,
294 : sizeof(derived_key));
295 1 : assert_int_equal(rc, 0);
296 1 : assert_memory_equal(derived_key,
297 : expected_pbkdf2_derived_key,
298 : sizeof(derived_key));
299 1 : }
300 :
301 1 : int main(int argc, char *argv[])
302 : {
303 1 : int rc;
304 1 : const struct CMUnitTest tests[] = {
305 : cmocka_unit_test(torture_enc_key),
306 : cmocka_unit_test(torture_mac_key),
307 : cmocka_unit_test(torture_encrypt),
308 : cmocka_unit_test(torture_encrypt_decrypt),
309 : cmocka_unit_test(torture_pbkdf2),
310 : };
311 :
312 1 : if (argc == 2) {
313 0 : cmocka_set_test_filter(argv[1]);
314 : }
315 1 : cmocka_set_message_output(CM_OUTPUT_SUBUNIT);
316 :
317 1 : rc = cmocka_run_group_tests(tests, NULL, NULL);
318 :
319 1 : return rc;
320 : }
|
