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35 lines
1.1 KiB
PHP
35 lines
1.1 KiB
PHP
<?
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/*************************************************************************|
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|--------------- Encryption class ----------------------------------------|
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|*************************************************************************|
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This class handles encryption and decryption, that's all folks.
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|*************************************************************************/
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if (!extension_loaded('mcrypt')) {
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die('Mcrypt Extension not loaded.');
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}
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class CRYPT {
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public function encrypt($Str, $Key = ENCKEY) {
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srand();
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$Str = str_pad($Str, 32 - strlen($Str));
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$IVSize = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);
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$IV = mcrypt_create_iv($IVSize, MCRYPT_RAND);
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$CryptStr = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $Key, $Str, MCRYPT_MODE_CBC, $IV);
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return base64_encode($IV.$CryptStr);
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}
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public function decrypt($CryptStr, $Key = ENCKEY) {
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if ($CryptStr != '') {
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$IV = substr(base64_decode($CryptStr), 0, 16);
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$CryptStr = substr(base64_decode($CryptStr), 16);
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return trim(mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $Key, $CryptStr, MCRYPT_MODE_CBC, $IV));
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} else {
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return '';
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}
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}
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} // class ENCRYPT()
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?>
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