@ 2015-09-21T10:39:09Z <?php
class Security {
public static function encrypt($input, $key) {
$size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB);
$input = Security::pkcs5_pad($input, $size);
$td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_ECB, '');
$iv = mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
mcrypt_generic_init($td, $key, $iv);
$data = mcrypt_generic($td, $input);
mcrypt_generic_deinit($td);
mcrypt_module_close($td);
$data = base64_encode($data);
return $data;
}
private static function pkcs5_pad ($text, $blocksize) {
$pad = $blocksize - (strlen($text) % $blocksize);
return $text . str_repeat(chr($pad), $pad);
}
public static function decrypt($sStr, $sKey) {
$decrypted= mcrypt_decrypt(
MCRYPT_RIJNDAEL_128,
$sKey,
base64_decode($sStr),
MCRYPT_MODE_ECB
);
$dec_s = strlen($decrypted);
$padding = ord($decrypted[$dec_s-1]);
$decrypted = substr($decrypted, 0, -$padding);
return $decrypted;
}
}
$value = "example";
$key = "1234567891234567"; //16 Character Key
echo Security::encrypt($value, $key);
echo Security::decrypt(Security::encrypt($value, $key), $key);
?>
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Output for 7.2.29 - 7.2.33 , 7.3.16 - 7.3.33 , 7.4.3 - 7.4.33 , 8.0.0 - 8.0.30 , 8.1.0 - 8.1.27 , 8.2.0 - 8.2.17 , 8.3.0 - 8.3.4 Fatal error: Uncaught Error: Call to undefined function mcrypt_get_block_size() in /in/XeLtr:4
Stack trace:
#0 /in/XeLtr(35): Security::encrypt('example', '123456789123456...')
#1 {main}
thrown in /in/XeLtr on line 4
Process exited with code 255 . Output for 5.4.0 - 5.4.45 , 5.5.0 - 5.5.34 , 5.6.0 - 5.6.20 , 7.0.0 - 7.0.5 IDcqXMG9R6tp5Vqi1RO92A==example preferences:dark mode live preview
194.34 ms | 402 KiB | 241 Q