6de50f9fdb
When ECDH selftest is enabled, then besides printing the result into the kernel message buffer, also create a debugfs file that allows retrieving the same information. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
271 lines
7.9 KiB
C
271 lines
7.9 KiB
C
/*
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BlueZ - Bluetooth protocol stack for Linux
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Copyright (C) 2014 Intel Corporation
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License version 2 as
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published by the Free Software Foundation;
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
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IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
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CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
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COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
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SOFTWARE IS DISCLAIMED.
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*/
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#include <linux/debugfs.h>
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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#include "ecc.h"
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#include "smp.h"
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#include "selftest.h"
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#if IS_ENABLED(CONFIG_BT_SELFTEST_ECDH)
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static const u8 priv_a_1[32] __initconst = {
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0xbd, 0x1a, 0x3c, 0xcd, 0xa6, 0xb8, 0x99, 0x58,
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0x99, 0xb7, 0x40, 0xeb, 0x7b, 0x60, 0xff, 0x4a,
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0x50, 0x3f, 0x10, 0xd2, 0xe3, 0xb3, 0xc9, 0x74,
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0x38, 0x5f, 0xc5, 0xa3, 0xd4, 0xf6, 0x49, 0x3f,
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};
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static const u8 priv_b_1[32] __initconst = {
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0xfd, 0xc5, 0x7f, 0xf4, 0x49, 0xdd, 0x4f, 0x6b,
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0xfb, 0x7c, 0x9d, 0xf1, 0xc2, 0x9a, 0xcb, 0x59,
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0x2a, 0xe7, 0xd4, 0xee, 0xfb, 0xfc, 0x0a, 0x90,
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0x9a, 0xbb, 0xf6, 0x32, 0x3d, 0x8b, 0x18, 0x55,
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};
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static const u8 pub_a_1[64] __initconst = {
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0xe6, 0x9d, 0x35, 0x0e, 0x48, 0x01, 0x03, 0xcc,
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0xdb, 0xfd, 0xf4, 0xac, 0x11, 0x91, 0xf4, 0xef,
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0xb9, 0xa5, 0xf9, 0xe9, 0xa7, 0x83, 0x2c, 0x5e,
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0x2c, 0xbe, 0x97, 0xf2, 0xd2, 0x03, 0xb0, 0x20,
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0x8b, 0xd2, 0x89, 0x15, 0xd0, 0x8e, 0x1c, 0x74,
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0x24, 0x30, 0xed, 0x8f, 0xc2, 0x45, 0x63, 0x76,
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0x5c, 0x15, 0x52, 0x5a, 0xbf, 0x9a, 0x32, 0x63,
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0x6d, 0xeb, 0x2a, 0x65, 0x49, 0x9c, 0x80, 0xdc,
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};
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static const u8 pub_b_1[64] __initconst = {
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0x90, 0xa1, 0xaa, 0x2f, 0xb2, 0x77, 0x90, 0x55,
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0x9f, 0xa6, 0x15, 0x86, 0xfd, 0x8a, 0xb5, 0x47,
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0x00, 0x4c, 0x9e, 0xf1, 0x84, 0x22, 0x59, 0x09,
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0x96, 0x1d, 0xaf, 0x1f, 0xf0, 0xf0, 0xa1, 0x1e,
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0x4a, 0x21, 0xb1, 0x15, 0xf9, 0xaf, 0x89, 0x5f,
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0x76, 0x36, 0x8e, 0xe2, 0x30, 0x11, 0x2d, 0x47,
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0x60, 0x51, 0xb8, 0x9a, 0x3a, 0x70, 0x56, 0x73,
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0x37, 0xad, 0x9d, 0x42, 0x3e, 0xf3, 0x55, 0x4c,
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};
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static const u8 dhkey_1[32] __initconst = {
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0x98, 0xa6, 0xbf, 0x73, 0xf3, 0x34, 0x8d, 0x86,
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0xf1, 0x66, 0xf8, 0xb4, 0x13, 0x6b, 0x79, 0x99,
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0x9b, 0x7d, 0x39, 0x0a, 0xa6, 0x10, 0x10, 0x34,
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0x05, 0xad, 0xc8, 0x57, 0xa3, 0x34, 0x02, 0xec,
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};
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static const u8 priv_a_2[32] __initconst = {
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0x63, 0x76, 0x45, 0xd0, 0xf7, 0x73, 0xac, 0xb7,
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0xff, 0xdd, 0x03, 0x72, 0xb9, 0x72, 0x85, 0xb4,
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0x41, 0xb6, 0x5d, 0x0c, 0x5d, 0x54, 0x84, 0x60,
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0x1a, 0xa3, 0x9a, 0x3c, 0x69, 0x16, 0xa5, 0x06,
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};
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static const u8 priv_b_2[32] __initconst = {
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0xba, 0x30, 0x55, 0x50, 0x19, 0xa2, 0xca, 0xa3,
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0xa5, 0x29, 0x08, 0xc6, 0xb5, 0x03, 0x88, 0x7e,
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0x03, 0x2b, 0x50, 0x73, 0xd4, 0x2e, 0x50, 0x97,
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0x64, 0xcd, 0x72, 0x0d, 0x67, 0xa0, 0x9a, 0x52,
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};
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static const u8 pub_a_2[64] __initconst = {
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0xdd, 0x78, 0x5c, 0x74, 0x03, 0x9b, 0x7e, 0x98,
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0xcb, 0x94, 0x87, 0x4a, 0xad, 0xfa, 0xf8, 0xd5,
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0x43, 0x3e, 0x5c, 0xaf, 0xea, 0xb5, 0x4c, 0xf4,
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0x9e, 0x80, 0x79, 0x57, 0x7b, 0xa4, 0x31, 0x2c,
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0x4f, 0x5d, 0x71, 0x43, 0x77, 0x43, 0xf8, 0xea,
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0xd4, 0x3e, 0xbd, 0x17, 0x91, 0x10, 0x21, 0xd0,
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0x1f, 0x87, 0x43, 0x8e, 0x40, 0xe2, 0x52, 0xcd,
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0xbe, 0xdf, 0x98, 0x38, 0x18, 0x12, 0x95, 0x91,
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};
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static const u8 pub_b_2[64] __initconst = {
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0xcc, 0x00, 0x65, 0xe1, 0xf5, 0x6c, 0x0d, 0xcf,
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0xec, 0x96, 0x47, 0x20, 0x66, 0xc9, 0xdb, 0x84,
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0x81, 0x75, 0xa8, 0x4d, 0xc0, 0xdf, 0xc7, 0x9d,
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0x1b, 0x3f, 0x3d, 0xf2, 0x3f, 0xe4, 0x65, 0xf4,
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0x79, 0xb2, 0xec, 0xd8, 0xca, 0x55, 0xa1, 0xa8,
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0x43, 0x4d, 0x6b, 0xca, 0x10, 0xb0, 0xc2, 0x01,
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0xc2, 0x33, 0x4e, 0x16, 0x24, 0xc4, 0xef, 0xee,
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0x99, 0xd8, 0xbb, 0xbc, 0x48, 0xd0, 0x01, 0x02,
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};
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static const u8 dhkey_2[32] __initconst = {
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0x69, 0xeb, 0x21, 0x32, 0xf2, 0xc6, 0x05, 0x41,
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0x60, 0x19, 0xcd, 0x5e, 0x94, 0xe1, 0xe6, 0x5f,
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0x33, 0x07, 0xe3, 0x38, 0x4b, 0x68, 0xe5, 0x62,
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0x3f, 0x88, 0x6d, 0x2f, 0x3a, 0x84, 0x85, 0xab,
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};
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static const u8 priv_a_3[32] __initconst = {
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0xbd, 0x1a, 0x3c, 0xcd, 0xa6, 0xb8, 0x99, 0x58,
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0x99, 0xb7, 0x40, 0xeb, 0x7b, 0x60, 0xff, 0x4a,
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0x50, 0x3f, 0x10, 0xd2, 0xe3, 0xb3, 0xc9, 0x74,
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0x38, 0x5f, 0xc5, 0xa3, 0xd4, 0xf6, 0x49, 0x3f,
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};
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static const u8 pub_a_3[64] __initconst = {
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0xe6, 0x9d, 0x35, 0x0e, 0x48, 0x01, 0x03, 0xcc,
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0xdb, 0xfd, 0xf4, 0xac, 0x11, 0x91, 0xf4, 0xef,
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0xb9, 0xa5, 0xf9, 0xe9, 0xa7, 0x83, 0x2c, 0x5e,
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0x2c, 0xbe, 0x97, 0xf2, 0xd2, 0x03, 0xb0, 0x20,
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0x8b, 0xd2, 0x89, 0x15, 0xd0, 0x8e, 0x1c, 0x74,
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0x24, 0x30, 0xed, 0x8f, 0xc2, 0x45, 0x63, 0x76,
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0x5c, 0x15, 0x52, 0x5a, 0xbf, 0x9a, 0x32, 0x63,
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0x6d, 0xeb, 0x2a, 0x65, 0x49, 0x9c, 0x80, 0xdc,
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};
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static const u8 dhkey_3[32] __initconst = {
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0x2d, 0xab, 0x00, 0x48, 0xcb, 0xb3, 0x7b, 0xda,
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0x55, 0x7b, 0x8b, 0x72, 0xa8, 0x57, 0x87, 0xc3,
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0x87, 0x27, 0x99, 0x32, 0xfc, 0x79, 0x5f, 0xae,
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0x7c, 0x1c, 0xf9, 0x49, 0xe6, 0xd7, 0xaa, 0x70,
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};
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static int __init test_ecdh_sample(const u8 priv_a[32], const u8 priv_b[32],
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const u8 pub_a[64], const u8 pub_b[64],
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const u8 dhkey[32])
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{
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u8 dhkey_a[32], dhkey_b[32];
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ecdh_shared_secret(pub_b, priv_a, dhkey_a);
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ecdh_shared_secret(pub_a, priv_b, dhkey_b);
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if (memcmp(dhkey_a, dhkey, 32))
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return -EINVAL;
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if (memcmp(dhkey_b, dhkey, 32))
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return -EINVAL;
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return 0;
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}
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static char test_ecdh_buffer[32];
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static ssize_t test_ecdh_read(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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return simple_read_from_buffer(user_buf, count, ppos, test_ecdh_buffer,
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strlen(test_ecdh_buffer));
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}
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static const struct file_operations test_ecdh_fops = {
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.open = simple_open,
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.read = test_ecdh_read,
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.llseek = default_llseek,
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};
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static int __init test_ecdh(void)
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{
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ktime_t calltime, delta, rettime;
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unsigned long long duration;
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int err;
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calltime = ktime_get();
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err = test_ecdh_sample(priv_a_1, priv_b_1, pub_a_1, pub_b_1, dhkey_1);
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if (err) {
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BT_ERR("ECDH sample 1 failed");
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goto done;
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}
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err = test_ecdh_sample(priv_a_2, priv_b_2, pub_a_2, pub_b_2, dhkey_2);
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if (err) {
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BT_ERR("ECDH sample 2 failed");
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goto done;
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}
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err = test_ecdh_sample(priv_a_3, priv_a_3, pub_a_3, pub_a_3, dhkey_3);
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if (err) {
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BT_ERR("ECDH sample 3 failed");
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goto done;
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}
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rettime = ktime_get();
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delta = ktime_sub(rettime, calltime);
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duration = (unsigned long long) ktime_to_ns(delta) >> 10;
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BT_INFO("ECDH test passed in %llu usecs", duration);
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done:
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if (!err)
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snprintf(test_ecdh_buffer, sizeof(test_ecdh_buffer),
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"PASS (%llu usecs)\n", duration);
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else
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snprintf(test_ecdh_buffer, sizeof(test_ecdh_buffer), "FAIL\n");
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debugfs_create_file("selftest_ecdh", 0444, bt_debugfs, NULL,
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&test_ecdh_fops);
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return err;
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}
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#else
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static inline int test_ecdh(void)
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{
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return 0;
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}
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#endif
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static int __init run_selftest(void)
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{
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int err;
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BT_INFO("Starting self testing");
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err = test_ecdh();
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if (err)
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goto done;
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err = bt_selftest_smp();
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done:
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BT_INFO("Finished self testing");
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return err;
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}
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#if IS_MODULE(CONFIG_BT)
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/* This is run when CONFIG_BT_SELFTEST=y and CONFIG_BT=m and is just a
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* wrapper to allow running this at module init.
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*
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* If CONFIG_BT_SELFTEST=n, then this code is not compiled at all.
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*/
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int __init bt_selftest(void)
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{
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return run_selftest();
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}
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#else
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/* This is run when CONFIG_BT_SELFTEST=y and CONFIG_BT=y and is run
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* via late_initcall() as last item in the initialization sequence.
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*
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* If CONFIG_BT_SELFTEST=n, then this code is not compiled at all.
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*/
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static int __init bt_selftest_init(void)
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{
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return run_selftest();
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}
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late_initcall(bt_selftest_init);
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#endif
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