public static function encrypt($plaintext, $key)
{
// Set up encryption parameters.
$plaintext_utf8 = utf8_encode($plaintext);
$inputData = cryptoHelpers::convertStringToByteArray($plaintext);
$keyAsNumbers = cryptoHelpers::toNumbers(bin2hex($key));
$keyLength = count($keyAsNumbers);
$iv = cryptoHelpers::generateSharedKey(16);
$encrypted = AES::encrypt($inputData, AES::modeOfOperation_CBC, $keyAsNumbers, $keyLength, $iv);
// Set up output format (space delimeted "plaintextsize iv cipher")
$retVal = $encrypted['originalsize'] . " " . cryptoHelpers::toHex($iv) . " " . cryptoHelpers::toHex($encrypted['cipher']);
return $retVal;
}
function wplc_encrypt_msg($plaintext)
{
$wplc_pro_settings = get_option("WPLC_PRO_SETTINGS");
if (isset($wplc_pro_settings['wplc_enable_encryption']) && $wplc_pro_settings['wplc_enable_encryption'] == 1) {
$api_key = get_option('wplc_api_key');
if ($api_key != '') {
$api_key = substr($api_key, 0, 10);
$plaintext_utf8 = utf8_encode($plaintext);
$inputData = cryptoHelpers::convertStringToByteArray($plaintext);
$keyAsNumbers = cryptoHelpers::toNumbers(bin2hex($api_key));
$keyLength = count($keyAsNumbers);
$iv = cryptoHelpers::generateSharedKey(16);
$encrypted = AES::encrypt($inputData, AES::modeOfOperation_CBC, $keyAsNumbers, $keyLength, $iv);
$retVal = $encrypted['originalsize'] . " " . cryptoHelpers::toHex($iv) . " " . cryptoHelpers::toHex($encrypted['cipher']);
$message = array('e' => 1, 'm' => $retVal);
return maybe_serialize($message);
} else {
$message = array('e' => 0, 'm' => $plaintext);
return maybe_serialize($message);
}
} else {
$message = array('e' => 0, 'm' => $plaintext);
return maybe_serialize($message);
}
}
