* @param $withFixed Whether to include a fixed salt (not recommended in p2p applications)
* @return $hashed The hashed and salted string
*/
- function hashString ($str, $oldHash = '', $withFixed = true);
+ function hashString (string $str, string $oldHash = '', bool $withFixed = true);
/**
* Encrypt the string with fixed salt
* @param $key Optional key, if none provided, a random key will be generated
* @return $encrypted Encrypted string
*/
- function encryptString ($str, $key = NULL);
+ function encryptString (string $str, string $key = NULL);
/**
* Decrypt the string with fixed salt
* @param $encrypted Encrypted string
* @return $str The unencrypted string
*/
- function decryptString ($encrypted);
+ function decryptString (string $encrypted);
}