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e9631169 S |
1 | <?php |
2 | /** | |
3 | * @author Jan Altensen (Stricted) | |
4 | * @license GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php> | |
5 | * @copyright 2015 Jan Altensen (Stricted) | |
6 | */ | |
7 | trait CryptLib { | |
8 | /** | |
9 | * sends the encrypted request to router | |
10 | * | |
11 | * @param string $path | |
12 | * @param mixed $fields | |
13 | * @param string $cookie | |
14 | * @return array | |
15 | */ | |
16 | private function sentEncryptedRequest ($path, $fields, $cookie = false) { | |
17 | $count = count($fields); | |
18 | $fields = $this->encrypt(http_build_query($fields)); | |
19 | return $this->sentRequest($path, $fields, $cookie, $count); | |
20 | } | |
21 | ||
22 | /** | |
23 | * decrypt data from router | |
24 | * | |
25 | * @param string $data | |
26 | * @return array | |
27 | */ | |
28 | private function decrypt ($data) { | |
29 | $iv = hex2bin(substr($this->challenge, 16, 16)); | |
30 | $adata = hex2bin(substr($this->challenge, 32, 16)); | |
31 | $key = hex2bin($this->derivedk); | |
32 | $enc = hex2bin($data); | |
33 | ||
34 | $factory = new CryptLib\Cipher\Factory(); | |
35 | $aes = $factory->getBlockCipher('rijndael-128'); | |
36 | $aes->setKey($key); | |
37 | $mode = $factory->getMode('ccm', $aes, $iv, [ 'adata' => $adata, 'lSize' => 7]); | |
38 | ||
39 | $mode->decrypt($enc); | |
40 | ||
41 | return $mode->finish(); | |
42 | } | |
43 | ||
44 | /** | |
45 | * decrypt data for the router | |
46 | * | |
47 | * @param string $data | |
48 | * @return string | |
49 | */ | |
50 | private function encrypt ($data) { | |
51 | $iv = hex2bin(substr($this->challenge, 16, 16)); | |
52 | $adata = hex2bin(substr($this->challenge, 32, 16)); | |
53 | $key = hex2bin($this->derivedk); | |
54 | ||
55 | $factory = new CryptLib\Cipher\Factory(); | |
56 | $aes = $factory->getBlockCipher('rijndael-128'); | |
57 | $aes->setKey($key); | |
58 | $mode = $factory->getMode('ccm', $aes, $iv, [ 'adata' => $adata, 'lSize' => 7]); | |
59 | $mode->encrypt($data); | |
60 | ||
61 | return bin2hex($mode->finish()); | |
62 | } | |
63 | } |