1 /*
2 * Copyright (c) 2017-2018, The OpenThread Authors.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. Neither the name of the copyright holder nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 /**
30 * @file
31 * This file implements a simple tool to compute pskc.
32 */
33
34 #include <stdio.h>
35 #include <sysexits.h>
36
37 #include "common/code_utils.hpp"
38 #include "utils/hex.hpp"
39 #include "utils/pskc.hpp"
40
41 /**
42 * Constants.
43 */
44 enum
45 {
46 kMaxNetworkName = 16,
47 kMaxPassphrase = 255,
48 kSizeExtPanId = 8,
49 };
50
help(void)51 void help(void)
52 {
53 printf("pskc - compute PSKc\n"
54 "SYNTAX:\n"
55 " pskc <PASSPHRASE> <EXTPANID> <NETWORK_NAME>\n"
56 "EXAMPLE:\n"
57 " pskc 654321 1122334455667788 OpenThread\n");
58 }
59
printPSKc(const char * aPassphrase,const char * aExtPanId,const char * aNetworkName)60 int printPSKc(const char *aPassphrase, const char *aExtPanId, const char *aNetworkName)
61 {
62 uint8_t extpanid[kSizeExtPanId];
63 size_t length;
64 int ret = -1;
65
66 otbr::Psk::Pskc pskcComputer;
67 const uint8_t *pskc;
68
69 length = strlen(aPassphrase);
70 VerifyOrExit(length > 0, printf("PASSPHRASE must not be empty.\n"));
71 VerifyOrExit(length <= kMaxPassphrase,
72 printf("PASSPHRASE Passphrase must be no more than %d bytes.\n", kMaxPassphrase));
73
74 length = strlen(aExtPanId);
75 VerifyOrExit(length == kSizeExtPanId * 2, printf("EXTPANID length must be %d bytes.\n", kSizeExtPanId));
76 for (size_t i = 0; i < length; i++)
77 {
78 VerifyOrExit((aExtPanId[i] <= '9' && aExtPanId[i] >= '0') || (aExtPanId[i] <= 'f' && aExtPanId[i] >= 'a') ||
79 (aExtPanId[i] <= 'F' && aExtPanId[i] >= 'A'),
80 printf("EXTPANID must be encoded in hex.\n"));
81 }
82 otbr::Utils::Hex2Bytes(aExtPanId, extpanid, sizeof(extpanid));
83
84 length = strlen(aNetworkName);
85 VerifyOrExit(length > 0, printf("NETWORK_NAME must not be empty.\n"));
86 VerifyOrExit(length <= kMaxNetworkName,
87 printf("NETWOR_KNAME length must be no more than %d bytes.\n", kMaxNetworkName));
88
89 pskc = pskcComputer.ComputePskc(extpanid, aNetworkName, aPassphrase);
90 for (int i = 0; i < 16; i++)
91 {
92 printf("%02x", pskc[i]);
93 }
94 printf("\n");
95 ret = 0;
96
97 exit:
98 return ret;
99 }
100
main(int argc,char * argv[])101 int main(int argc, char *argv[])
102 {
103 int ret = 0;
104
105 VerifyOrExit(argc == 4, help(), ret = EX_USAGE);
106 ret = printPSKc(argv[1], argv[2], argv[3]);
107
108 exit:
109 return ret;
110 }
111