An authenticated encryption scheme for automatic dependent surveillance-broadcast data link

To meet future demand for air transport growth, break the traditional ground navigation aids facilities limitations and effectively enhance flight safety and efficiency, a new generation of air surveillance system will use automatic dependent surveillance-broadcast (ADS-B) system. However, ADS-B data link is a wireless broadcast-type link which is without designed-in security measures. Therefore potential security vulnerabilities and threats remain to be assessed and resolved. This paper aims to assess security of the ADS-B data link, and build encryption and authentication capability on the ADS-B data link to provide privacy and integrity of broadcast information. In the paper, a data link authenticated encryption (DLAE) scheme is designed for simultaneously protecting both message´s privacy and its authenticity. Traditionally, these two security goals had been handled separately by means of encryption schemes and message authentication codes. The proposed DLAE can increase significantly the processing speed in comparison with the traditional design methods.