/**
* Create a new UserAgentGenerator instance.
*
* @param Key $secretKey
* @param string|null $userAgent
*/
public function __construct(Key $secretKey, string $userAgent = null)
{
if ($userAgent !== null) {
$userAgent = $_SERVER['HTTP_USER_AGENT'] ?? '';
}
$this->userAgent = $secretKey->saveToAsciiSafeString() . $userAgent;
}
private function encryptGroupKey(User $user, Key $groupKey)
{
// Encrypt key with users public key
$pubKey = $user->getPubKey();
// TODO check return
openssl_public_encrypt($groupKey->saveToAsciiSafeString(), $encryptedKey, $pubKey);
return $encryptedKey;
}
function defuse_crypto($message, $key, $type)
{
//echo $message." ;; ".$key." ;; ".$type;
// init
$err = '';
// manage key origin
if (empty($key) && $type == "encrypt") {
try {
$key = \Defuse\Crypto\Crypto::createNewRandomKey();
} catch (\Defuse\Crypto\Exception\CryptoTestFailedException $ex) {
$err = 'Cannot safely create a key';
} catch (\Defuse\Crypto\Exception\CannotPerformOperationException $ex) {
$err = 'Cannot safely create a key';
}
//\Defuse\Crypto\Encoding::binToHex($key);
$tmp = \Defuse\Crypto\Key::saveToAsciiSafeString($key);
//echo $key_plain;
}
if ($type == "encrypt") {
try {
$ciphertext = \Defuse\Crypto\Crypto::Encrypt($message, $key);
} catch (\Defuse\Crypto\Exception\CryptoTestFailedException $ex) {
$err = 'Cannot safely perform encryption';
} catch (\Defuse\Crypto\Exception\CannotPerformOperationException $ex) {
$err = 'Cannot safely perform encryption';
}
return array('string' => isset($ciphertext) ? $ciphertext : "", 'error' => $err);
} else {
if ($type == "decrypt") {
try {
$decrypted = \Defuse\Crypto\Crypto::Decrypt($message, $key);
} catch (\Defuse\Crypto\Exception\InvalidCiphertextException $ex) {
$err = 'DANGER! DANGER! The ciphertext has been tampered with!';
} catch (\Defuse\Crypto\Exception\CryptoTestFailedException $ex) {
$err = 'Cannot safely perform decryption';
} catch (\Defuse\Crypto\Exception\CannotPerformOperationException $ex) {
$err = 'Cannot safely perform decryption';
}
return array('string' => isset($decrypted) ? $decrypted : "", 'error' => $err);
}
}
}
/**
* Create a new ClientIpGenerator instance.
*
* @param Key $secretKey
*/
public function __construct(Key $secretKey)
{
$clientIp = $this->getIpAddress();
$this->clientIp = $secretKey->saveToAsciiSafeString() . $clientIp;
}
