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

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

Blog Article

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 authentication (TESLA) without the quadrature (Q) channel.This scheme appends two new message types to the SBAS scheduler without over-burdening the message schedule.We have taken special care to ensure that our scheme (1) meets the appropriate security requirements needed to prevent and deter spoofing; (2) is USB Retention Harness compatible with existing cryptographic standards; (3) is flexible, expandable, and future-proof to different cryptographic and implementation schemes; and (4) is backward compatible with legacy receivers.The scheme accommodates a diverse set of features, including authenticating core-constellation ephemerides.We discuss the SBAS provider and receiver machine state and its startup, including its use by aircraft that traverse E Vitamins differing SBAS coverage areas.

We tested our scheme with existing SBAS simulation and analysis tools and found that it had negligible effects on current SBAS availability and continuity requirements.