mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-15 23:14:31 +08:00
763d9a302a
Bluetooth would crash when computing ECDH keys with kpp
if VMAP_STACK is enabled. Fix by allocating data passed
to kpp on heap.
Fixes: 58771c1c ("Bluetooth: convert smp and selftest to crypto kpp
API")
Signed-off-by: Salvatore Benedetto <salvatore.benedetto@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
284 lines
8.1 KiB
C
284 lines
8.1 KiB
C
/*
|
|
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(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 = 0;
|
|
|
|
tmp = kmalloc(64, GFP_KERNEL);
|
|
if (!tmp)
|
|
return -EINVAL;
|
|
|
|
dhkey_a = &tmp[0];
|
|
dhkey_b = &tmp[32];
|
|
|
|
compute_ecdh_secret(pub_b, priv_a, dhkey_a);
|
|
compute_ecdh_secret(pub_a, priv_b, dhkey_b);
|
|
|
|
if (memcmp(dhkey_a, dhkey, 32)) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (memcmp(dhkey_b, dhkey, 32))
|
|
ret = -EINVAL;
|
|
|
|
out:
|
|
kfree(dhkey_a);
|
|
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)
|
|
{
|
|
ktime_t calltime, delta, rettime;
|
|
unsigned long long duration;
|
|
int err;
|
|
|
|
calltime = ktime_get();
|
|
|
|
err = test_ecdh_sample(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(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(priv_a_3, priv_a_3, pub_a_3, pub_a_3, dhkey_3);
|
|
if (err) {
|
|
BT_ERR("ECDH sample 3 failed");
|
|
goto done;
|
|
}
|
|
|
|
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
|