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Commit | Line | Data |
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044cff2d AD |
1 | <?php |
2 | function decrypt_string($str) { | |
3 | $pair = explode(":", $str); | |
4 | ||
5 | if (count($pair) == 2) { | |
6 | @$iv = base64_decode($pair[0]); | |
7 | @$encstr = base64_decode($pair[1]); | |
8 | ||
9 | if ($iv && $encstr) { | |
10 | $key = hash('SHA256', FEED_CRYPT_KEY, true); | |
11 | ||
12 | $str = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $encstr, | |
13 | MCRYPT_MODE_CBC, $iv); | |
14 | ||
15 | if ($str) return rtrim($str); | |
16 | } | |
17 | } | |
18 | ||
19 | return false; | |
20 | } | |
21 | ||
22 | function encrypt_string($str) { | |
23 | $key = hash('SHA256', FEED_CRYPT_KEY, true); | |
24 | ||
25 | $iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, | |
26 | MCRYPT_MODE_CBC), MCRYPT_RAND); | |
27 | ||
28 | $encstr = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $str, | |
29 | MCRYPT_MODE_CBC, $iv); | |
30 | ||
31 | $iv_base64 = base64_encode($iv); | |
32 | $encstr_base64 = base64_encode($encstr); | |
33 | ||
34 | return "$iv_base64:$encstr_base64"; | |
35 | } | |
36 | ?> |