function decrypt($input, $key)
{
// Split the input into its parts
$cipherSplit = explode(" ", $input);
$originalSize = intval($cipherSplit[0]);
$iv = cryptoHelpers::toNumbers($cipherSplit[1]);
$cipherText = $cipherSplit[2];
// Set up encryption parameters
$cipherIn = cryptoHelpers::toNumbers($cipherText);
$keyAsNumbers = cryptoHelpers::toNumbers(bin2hex($key));
$keyLength = count($keyAsNumbers);
$decrypted = AES::decrypt($cipherIn, $originalSize, AES::modeOfOperation_CBC, $keyAsNumbers, $keyLength, $iv);
// Byte-array to text.
$hexDecrypted = cryptoHelpers::toHex($decrypted);
$retVal = pack("H*", $hexDecrypted);
return $retVal;
}
function wplc_decrypt_msg($input)
{
$messages = maybe_unserialize($input);
if (is_array($messages)) {
if ($messages['e'] == 1) {
/* This message was encrypted */
$api_key = get_option('wplc_api_key');
$api_key = substr($api_key, 0, 10);
$cipherSplit = explode(" ", $messages['m']);
$originalSize = intval($cipherSplit[0]);
$iv = cryptoHelpers::toNumbers($cipherSplit[1]);
$cipherText = $cipherSplit[2];
$cipherIn = cryptoHelpers::toNumbers($cipherText);
$keyAsNumbers = cryptoHelpers::toNumbers(bin2hex($api_key));
$keyLength = count($keyAsNumbers);
$decrypted = AES::decrypt($cipherIn, $originalSize, AES::modeOfOperation_CBC, $keyAsNumbers, $keyLength, $iv);
$hexDecrypted = cryptoHelpers::toHex($decrypted);
$retVal = pack("H*", $hexDecrypted);
return stripslashes($retVal);
} else {
return stripslashes($messages['m']);
}
} else {
return stripslashes($input);
}
}
{
$byteArray = array();
for ($i = 0; $i < strlen($s); $i++) {
$byteArray[] = ord($s[$i]);
}
return $byteArray;
}
public static function convertByteArrayToString($byteArray)
{
$s = '';
for ($i = 0; $i < count($byteArray); $i++) {
$s .= chr($byteArray[$i]);
}
return $s;
}
public static function base64_encode_line($b)
{
return base64_encode(self::convertByteArrayToString($b));
}
public static function base64_encode($b)
{
$b64 = self::base64_encode_line($b);
return chunk_split($b, 64, "\n");
}
public static function base64_decode($b)
{
return self::convertStringToByteArray(base64_decode($b));
}
}
var_dump(cryptoHelpers::base64_decode('BBB'));