private function getSalt() {
		$salt = sprintf('$2a$%02d$', $this->rounds);

		$bytes = $this->getRandomBytes(16);

		$salt .= $this->encodeBytes($bytes);

		return $salt;
	}
private function getSalt() {
		$salt = sprintf('$2a$%02d$', $this->rounds);

		$bytes = $this->getRandomBytes(16);

		$salt .= $this->encodeBytes($bytes);

		return $salt;
	}
private function getSalt ( ) { $ salt = sprintf ( '$2a$%02d$' , $ this -> rounds ) ; $ bytes = $ this -> getRandomBytes ( 16 ) ; $ salt .= $ this -> encodeBytes ( $ bytes ) ; return $ salt ; }
return an ascii-encoded 16 char salt
return an ascii - encoded 16 char salt