aboutsummaryrefslogtreecommitdiff
path: root/net/bluetooth/selftest.c
blob: f49604d44b8778057acaeb2f2424a623f043547d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
/*
   BlueZ - Bluetooth protocol stack for Linux

   Copyright (C) 2014 Intel Corporation

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License version 2 as
   published by the Free Software Foundation;

   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
   IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
   CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
   SOFTWARE IS DISCLAIMED.
*/

#include <linux/debugfs.h>

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>

#include "ecdh_helper.h"
#include "smp.h"
#include "selftest.h"

#if IS_ENABLED(CONFIG_BT_SELFTEST_ECDH)

static const u8 priv_a_1[32] __initconst = {
	0xbd, 0x1a, 0x3c, 0xcd, 0xa6, 0xb8, 0x99, 0x58,
	0x99, 0xb7, 0x40, 0xeb, 0x7b, 0x60, 0xff, 0x4a,
	0x50, 0x3f, 0x10, 0xd2, 0xe3, 0xb3, 0xc9, 0x74,
	0x38, 0x5f, 0xc5, 0xa3, 0xd4, 0xf6, 0x49, 0x3f,
};
static const u8 priv_b_1[32] __initconst = {
	0xfd, 0xc5, 0x7f, 0xf4, 0x49, 0xdd, 0x4f, 0x6b,
	0xfb, 0x7c, 0x9d, 0xf1, 0xc2, 0x9a, 0xcb, 0x59,
	0x2a, 0xe7, 0xd4, 0xee, 0xfb, 0xfc, 0x0a, 0x90,
	0x9a, 0xbb, 0xf6, 0x32, 0x3d, 0x8b, 0x18, 0x55,
};
static const u8 pub_a_1[64] __initconst = {
	0xe6, 0x9d, 0x35, 0x0e, 0x48, 0x01, 0x03, 0xcc,
	0xdb, 0xfd, 0xf4, 0xac, 0x11, 0x91, 0xf4, 0xef,
	0xb9, 0xa5, 0xf9, 0xe9, 0xa7, 0x83, 0x2c, 0x5e,
	0x2c, 0xbe, 0x97, 0xf2, 0xd2, 0x03, 0xb0, 0x20,

	0x8b, 0xd2, 0x89, 0x15, 0xd0, 0x8e, 0x1c, 0x74,
	0x24, 0x30, 0xed, 0x8f, 0xc2, 0x45, 0x63, 0x76,
	0x5c, 0x15, 0x52, 0x5a, 0xbf, 0x9a, 0x32, 0x63,
	0x6d, 0xeb, 0x2a, 0x65, 0x49, 0x9c, 0x80, 0xdc,
};
static const u8 pub_b_1[64] __initconst = {
	0x90, 0xa1, 0xaa, 0x2f, 0xb2, 0x77, 0x90, 0x55,
	0x9f, 0xa6, 0x15, 0x86, 0xfd, 0x8a, 0xb5, 0x47,
	0x00, 0x4c, 0x9e, 0xf1, 0x84, 0x22, 0x59, 0x09,
	0x96, 0x1d, 0xaf, 0x1f, 0xf0, 0xf0, 0xa1, 0x1e,

	0x4a, 0x21, 0xb1, 0x15, 0xf9, 0xaf, 0x89, 0x5f,
	0x76, 0x36, 0x8e, 0xe2, 0x30, 0x11, 0x2d, 0x47,
	0x60, 0x51, 0xb8, 0x9a, 0x3a, 0x70, 0x56, 0x73,
	0x37, 0xad, 0x9d, 0x42, 0x3e, 0xf3, 0x55, 0x4c,
};
static const u8 dhkey_1[32] __initconst = {
	0x98, 0xa6, 0xbf, 0x73, 0xf3, 0x34, 0x8d, 0x86,
	0xf1, 0x66, 0xf8, 0xb4, 0x13, 0x6b, 0x79, 0x99,
	0x9b, 0x7d, 0x39, 0x0a, 0xa6, 0x10, 0x10, 0x34,
	0x05, 0xad, 0xc8, 0x57, 0xa3, 0x34, 0x02, 0xec,
};

static const u8 priv_a_2[32] __initconst = {
	0x63, 0x76, 0x45, 0xd0, 0xf7, 0x73, 0xac, 0xb7,
	0xff, 0xdd, 0x03, 0x72, 0xb9, 0x72, 0x85, 0xb4,
	0x41, 0xb6, 0x5d, 0x0c, 0x5d, 0x54, 0x84, 0x60,
	0x1a, 0xa3, 0x9a, 0x3c, 0x69, 0x16, 0xa5, 0x06,
};
static const u8 priv_b_2[32] __initconst = {
	0xba, 0x30, 0x55, 0x50, 0x19, 0xa2, 0xca, 0xa3,
	0xa5, 0x29, 0x08, 0xc6, 0xb5, 0x03, 0x88, 0x7e,
	0x03, 0x2b, 0x50, 0x73, 0xd4, 0x2e, 0x50, 0x97,
	0x64, 0xcd, 0x72, 0x0d, 0x67, 0xa0, 0x9a, 0x52,
};
static const u8 pub_a_2[64] __initconst = {
	0xdd, 0x78, 0x5c, 0x74, 0x03, 0x9b, 0x7e, 0x98,
	0xcb, 0x94, 0x87, 0x4a, 0xad, 0xfa, 0xf8, 0xd5,
	0x43, 0x3e, 0x5c, 0xaf, 0xea, 0xb5, 0x4c, 0xf4,
	0x9e, 0x80, 0x79, 0x57, 0x7b, 0xa4, 0x31, 0x2c,

	0x4f, 0x5d, 0x71, 0x43, 0x77, 0x43, 0xf8, 0xea,
	0xd4, 0x3e, 0xbd, 0x17, 0x91, 0x10, 0x21, 0xd0,
	0x1f, 0x87, 0x43, 0x8e, 0x40, 0xe2, 0x52, 0xcd,
	0xbe, 0xdf, 0x98, 0x38, 0x18, 0x12, 0x95, 0x91,
};
static const u8 pub_b_2[64] __initconst = {
	0xcc, 0x00, 0x65, 0xe1, 0xf5, 0x6c, 0x0d, 0xcf,
	0xec, 0x96, 0x47, 0x20, 0x66, 0xc9, 0xdb, 0x84,
	0x81, 0x75, 0xa8, 0x4d, 0xc0, 0xdf, 0xc7, 0x9d,
	0x1b, 0x3f, 0x3d, 0xf2, 0x3f, 0xe4, 0x65, 0xf4,

	0x79, 0xb2, 0xec, 0xd8, 0xca, 0x55, 0xa1, 0xa8,
	0x43, 0x4d, 0x6b, 0xca, 0x10, 0xb0, 0xc2, 0x01,
	0xc2, 0x33, 0x4e, 0x16, 0x24, 0xc4, 0xef, 0xee,
	0x99, 0xd8, 0xbb, 0xbc, 0x48, 0xd0, 0x01, 0x02,
};
static const u8 dhkey_2[32] __initconst = {
	0x69, 0xeb, 0x21, 0x32, 0xf2, 0xc6, 0x05, 0x41,
	0x60, 0x19, 0xcd, 0x5e, 0x94, 0xe1, 0xe6, 0x5f,
	0x33, 0x07, 0xe3, 0x38, 0x4b, 0x68, 0xe5, 0x62,
	0x3f, 0x88, 0x6d, 0x2f, 0x3a, 0x84, 0x85, 0xab,
};

static const u8 priv_a_3[32] __initconst = {
	0xbd, 0x1a, 0x3c, 0xcd, 0xa6, 0xb8, 0x99, 0x58,
	0x99, 0xb7, 0x40, 0xeb, 0x7b, 0x60, 0xff, 0x4a,
	0x50, 0x3f, 0x10, 0xd2, 0xe3, 0xb3, 0xc9, 0x74,
	0x38, 0x5f, 0xc5, 0xa3, 0xd4, 0xf6, 0x49, 0x3f,
};
static const u8 pub_a_3[64] __initconst = {
	0xe6, 0x9d, 0x35, 0x0e, 0x48, 0x01, 0x03, 0xcc,
	0xdb, 0xfd, 0xf4, 0xac, 0x11, 0x91, 0xf4, 0xef,
	0xb9, 0xa5, 0xf9, 0xe9, 0xa7, 0x83, 0x2c, 0x5e,
	0x2c, 0xbe, 0x97, 0xf2, 0xd2, 0x03, 0xb0, 0x20,

	0x8b, 0xd2, 0x89, 0x15, 0xd0, 0x8e, 0x1c, 0x74,
	0x24, 0x30, 0xed, 0x8f, 0xc2, 0x45, 0x63, 0x76,
	0x5c, 0x15, 0x52, 0x5a, 0xbf, 0x9a, 0x32, 0x63,
	0x6d, 0xeb, 0x2a, 0x65, 0x49, 0x9c, 0x80, 0xdc,
};
static const u8 dhkey_3[32] __initconst = {
	0x2d, 0xab, 0x00, 0x48, 0xcb, 0xb3, 0x7b, 0xda,
	0x55, 0x7b, 0x8b, 0x72, 0xa8, 0x57, 0x87, 0xc3,
	0x87, 0x27, 0x99, 0x32, 0xfc, 0x79, 0x5f, 0xae,
	0x7c, 0x1c, 0xf9, 0x49, 0xe6, 0xd7, 0xaa, 0x70,
};

static int __init test_ecdh_sample(struct crypto_kpp *tfm, const u8 priv_a[32],
				   const u8 priv_b[32], const u8 pub_a[64],
				   const u8 pub_b[64], const u8 dhkey[32])
{
	u8 *tmp, *dhkey_a, *dhkey_b;
	int ret;

	tmp = kmalloc(64, GFP_KERNEL);
	if (!tmp)
		return -EINVAL;

	dhkey_a = &tmp[0];
	dhkey_b = &tmp[32];

	ret = set_ecdh_privkey(tfm, priv_a);
	if (ret)
		goto out;

	ret = compute_ecdh_secret(tfm, pub_b, dhkey_a);
	if (ret)
		goto out;

	if (memcmp(dhkey_a, dhkey, 32)) {
		ret = -EINVAL;
		goto out;
	}

	ret = set_ecdh_privkey(tfm, priv_b);
	if (ret)
		goto out;

	ret = compute_ecdh_secret(tfm, pub_a, dhkey_b);
	if (ret)
		goto out;

	if (memcmp(dhkey_b, dhkey, 32))
		ret = -EINVAL;
	/* fall through*/
out:
	kfree(tmp);
	return ret;
}

static char test_ecdh_buffer[32];

static ssize_t test_ecdh_read(struct file *file, char __user *user_buf,
			      size_t count, loff_t *ppos)
{
	return simple_read_from_buffer(user_buf, count, ppos, test_ecdh_buffer,
				       strlen(test_ecdh_buffer));
}

static const struct file_operations test_ecdh_fops = {
	.open		= simple_open,
	.read		= test_ecdh_read,
	.llseek		= default_llseek,
};

static int __init test_ecdh(void)
{
	struct crypto_kpp *tfm;
	ktime_t calltime, delta, rettime;
	unsigned long long duration = 0;
	int err;

	calltime = ktime_get();

	tfm = crypto_alloc_kpp("ecdh-nist-p256", 0, 0);
	if (IS_ERR(tfm)) {
		BT_ERR("Unable to create ECDH crypto context");
		err = PTR_ERR(tfm);
		goto done;
	}

	err = test_ecdh_sample(tfm, priv_a_1, priv_b_1, pub_a_1, pub_b_1,
			       dhkey_1);
	if (err) {
		BT_ERR("ECDH sample 1 failed");
		goto done;
	}

	err = test_ecdh_sample(tfm, priv_a_2, priv_b_2, pub_a_2, pub_b_2,
			       dhkey_2);
	if (err) {
		BT_ERR("ECDH sample 2 failed");
		goto done;
	}

	err = test_ecdh_sample(tfm, priv_a_3, priv_a_3, pub_a_3, pub_a_3,
			       dhkey_3);
	if (err) {
		BT_ERR("ECDH sample 3 failed");
		goto done;
	}

	crypto_free_kpp(tfm);

	rettime = ktime_get();
	delta = ktime_sub(rettime, calltime);
	duration = (unsigned long long) ktime_to_ns(delta) >> 10;

	BT_INFO("ECDH test passed in %llu usecs", duration);

done:
	if (!err)
		snprintf(test_ecdh_buffer, sizeof(test_ecdh_buffer),
			 "PASS (%llu usecs)\n", duration);
	else
		snprintf(test_ecdh_buffer, sizeof(test_ecdh_buffer), "FAIL\n");

	debugfs_create_file("selftest_ecdh", 0444, bt_debugfs, NULL,
			    &test_ecdh_fops);

	return err;
}

#else

static inline int test_ecdh(void)
{
	return 0;
}

#endif

static int __init run_selftest(void)
{
	int err;

	BT_INFO("Starting self testing");

	err = test_ecdh();
	if (err)
		goto done;

	err = bt_selftest_smp();

done:
	BT_INFO("Finished self testing");

	return err;
}

#if IS_MODULE(CONFIG_BT)

/* This is run when CONFIG_BT_SELFTEST=y and CONFIG_BT=m and is just a
 * wrapper to allow running this at module init.
 *
 * If CONFIG_BT_SELFTEST=n, then this code is not compiled at all.
 */
int __init bt_selftest(void)
{
	return run_selftest();
}

#else

/* This is run when CONFIG_BT_SELFTEST=y and CONFIG_BT=y and is run
 * via late_initcall() as last item in the initialization sequence.
 *
 * If CONFIG_BT_SELFTEST=n, then this code is not compiled at all.
 */
static int __init bt_selftest_init(void)
{
	return run_selftest();
}
late_initcall(bt_selftest_init);

#endif