Galileo Open Service Navigation Message Authentication: Preparation Phase and Drivers for Future Service Provision

Götzelmann, Martin; Köller, Evelyn; Semper, Ignacio Viciano; Oskam, Dirk; Gkougkas, Elias; Simón, Javier; Latour, Antoine

doi:10.33012/2021.17886

Cited by 8 publications

(10 citation statements)

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“…As expected, although the PVT availability results significantly reduced, the position accuracy improves and the errors on the position are comparable with those computed with all the in view satellites. Results are in line with those presented in [18].…”

Section: Osnma-enabled Receiver Performancesupporting

confidence: 92%

“…On November 18 th 2020, Galileo satellites started the the first-ever transmission of authentication features in open GNSS signals, by including the OSNMA data in the E1 OS Signal-in-Space (SIS) data message, thus allowing the first-ever OSNMA-protected position fix to be successfully computed [17], [18]. On time with the roadmap in [14], one year later, on November 15 th 2021, the Public Observation (PO) Test Phase of the Galileo OSNMA signal was officially opened by the European Union Agency for the Space Programme (EUSPA), with the goal to reach full service provision by 2023.…”

Section: Thentication (Osnma) Is An Integral Function Of the Galileomentioning

confidence: 99%

“…In addition, as clear from section II, to start the verification process, the receiver needs to receive the entire root key. Figure 7 depicts the percentage of received bits composing the root key, showing that the total time needed to complete the reception of the root key is approximately 150 seconds [18].…”

Section: B Osnma Signal Testing and Validationmentioning

confidence: 99%

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Galileo OSNMA Public Observation Phase: Signal Testing and Validation

et al. 2022

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The Public Observation (PO) Test Phase of the Galileo Open Service Navigation Message Authentication (OSNMA) signal is officially opened since November 15 th 2021, by the European Union Agency for the Space Programme (EUSPA). During this phase, any interested users is allowed to access the Signal in Space (SIS) for testing purposes, while the crypto material needed to process the message and verify its authenticity is made available on the European GNSS Service Centre (GSC) web portal. This paper describes the processing of the Galileo E1-B navigation message, as observed during the first days of PO. The purpose is to analyze the crypto and authenticated data carried by the SIS and apply the OSNMA protocol to authenticate the navigation message. The SIS has been processed with the NGene real time software receiver which verifies the authenticity of the navigation data, before evaluating the position fix. The work is completed by an assessment of OSNMA-ready receiver performance, mainly in terms of position accuracy.

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Section: Osnma-enabled Receiver Performancesupporting

confidence: 92%

Section: Thentication (Osnma) Is An Integral Function Of the Galileomentioning

confidence: 99%

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Galileo OSNMA Public Observation Phase: Signal Testing and Validation

et al. 2022

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“…The proposed implementation has a moderate TBA performance which is better than the pure SCA scheme (Chimera) but worse than the agile NMA scheme (OSNMA). The TTFAF indicator can be calculated from the TBA indicator and the time length of authentication epoch as Equation (18).…”

Section: Robustnessmentioning

confidence: 99%

Randomly Flipped Chip based signal power authentication for GNSS civilian signals

Yuan

Tang

Sun

et al. 2022

IET Radar Sonar & Navi

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The navigation signal authentication schemes protect GNSS services from spoofing attacks by attaching unforgeable information to signals. In this study, Randomly Flipped Chip based Signal Power Authentication (RFC‐SPA), is proposed to jointly authenticate the navigation message and spreading code of GNSS civilian signals. Designed to support two modes of authentication (fast channel and slow channel), the proposed scheme employs a fixed amount of flipped chips, which are randomly distributed in some areas of the spreading code to form a relative fluctuation in the correlation result of the signal. The fast channel is a spreading code authentication (SCA) of these flipped chips, which is the same as the Chimera. In the slow channel, since the correlation results between the local periodical spreading code and the signal in areas with flipped chips will be smaller than those results in areas without flipped chips, receivers in the tracking correlation can extract this fluctuation. Since the fluctuation modulates a digital signature, receivers can verify the authenticity of both the navigation message and spreading code through the authentication of this digital signature. Compared with mainstream schemes, RFC‐SPA requires no extra tracking channel and has no impact on the navigation message. Besides, the proposed scheme maintains a similar robustness and security performance while significantly reducing the storage requirement compared with SCA. The scheme is demonstrated in a proposed implementation for Beidou B1C civilian signal, and the performance metrics are analysed. In the proposed implementation, the detection possibility is higher than 99.7% at 35dBHz of C/N0, and only 33.6% of the storage is required compared with the suggested configuration of the Chimera scheme for the GPS L1C civilian signal.

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“…The addition of new GNSS signal features [4,5] and the protection of GNSS receivers against the broadcast of counterfeit GNSS signals is an active field of research [6,7,8]. Assessing the GNSS signal performance under multipath, jamming and spoofing requires a faithful reproduction of the actual GNSS scenarios [3].…”

Section: Introductionmentioning

confidence: 99%

Implementation of a GNSS Rebroadcaster in an All-Programmable System-On-Chip Platform

Majoral

Arribas

Fernández‐Prades

2022

2022 10th Workshop on Satellite Navigation Technology (NAVITEC)

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This paper reports the design, proof-of-concept implementation and preliminary performance assessment of a lowcost, real-time, portable, low power, and small form factor GNSS rebroadcaster. This device can be used both as a GNSS signal generator and as a GNSS signal regenerator. This device can be used to test the addition of new features in GNSS signals, such as new signals for ranging, and to characterize the performance of new and existing spoofing countermeasures for GNSS receivers in real time. This device does not require the use of post-processed GNSS signals, enabling the testing with live signals, for instance in a vehicular test campaign replicating the correct dynamic and channel impairments.

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Galileo Open Service Navigation Message Authentication: Preparation Phase and Drivers for Future Service Provision

Cited by 8 publications

References 0 publications

Galileo OSNMA Public Observation Phase: Signal Testing and Validation

Galileo OSNMA Public Observation Phase: Signal Testing and Validation

Randomly Flipped Chip based signal power authentication for GNSS civilian signals

Implementation of a GNSS Rebroadcaster in an All-Programmable System-On-Chip Platform

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