Authentication of Satellite-Based Augmentation Systems with Over-the-Air Rekeying Schemes

Abstract Here we delineate a complete satellite-based augmentation system (SBAS) authentication scheme, including over-the-air rekeying (OTAR), that uses the elliptic curve digital signature algorithm (ECDSA) and timed efficient stream loss-tolerant (TESLA) without quadrature (Q) channel. This scheme appends two new message types to SBAS scheduler over-burdening schedule. We have taken special care ensure our (1) meets appropriate security requirements needed prevent deter spoofing; (2) is compatible with existing cryptographic standards; (3) flexible, expandable, future-proof different implementation schemes; (4) backward legacy receivers. The accommodates diverse set of features, authenticating core-constellation ephemerides. discuss provider receiver machine state its startup, use by aircraft traverse differing coverage areas. tested simulation analysis tools found it had negligible effects on current availability continuity requirements.