The Galileo Open Service Navigation Message Authentication (OSNMA): The Pioneer Data Authentication Service

This paper provides a summary of Galileo OSNMA current status and prospects. It describes its roadmap, covering the past, present and next phases, and its main design elements, including the already known signal-in-space message and the public key infrastructure. The paper also points at the main applicable technical documents, the performance achieved in terms of availability and accuracy over the last months, and the market prospects and applications that may benefit from OSNMA. Its main purpose is to provide a full overview of OSNMA as it currently stands, and the references to implement OSNMA-capable receivers and applications in view of a forthcoming operational declaration.