| Titel: | Guards and Watchdogs in One-Way Synchronization with Delay-Related Authentication Mechanisms |
| Autoren: |
Langer, Martin, Ostfalia Hochschule für angewandte Wissenschaften, Wolfenbüttel Teichel, Kristof, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 4.4, Zeit und Frequenz Heine, Kai, Ostfalia Hochschule für angewandte Wissenschaften, Wolfenbüttel Sibold, Dieter, Physikalisch-Technische Bundesanstalt (PTB), Referat Q.42, Zeitverteilung mittels IP Bermbach, Rainer, Ostfalia Hochschule für angewandte Wissenschaften, Wolfenbüttel |
| Beitragende: | HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887 |
| Seiten: | 7 |
| Sprache: | en |
| DOI: | 10.7795/EMPIR.17IND06.CA.20191126 |
| Art der Ressource: | Text / Article |
| Herausgeber: | Physikalisch-Technische Bundesanstalt (PTB) |
| Rechte: | Private use is allowed for non-profit purposes only. |
| Beziehungen: | IsVariantFormOf: DOI 10.1109/ISPCS.2019.8886633 |
| Daten: |
Verfügbar: 2019-11-26 |
| Datei: |
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| Schlagworte | Synchronization ; Protocols ; Servers ; Cryptography ; Clocks ; Global Navigation Satellite System (GNSS) |
| Zusammenfassung: | In this paper, we consider ways of using secondary “Watchdog” mechanisms to protect primary time synchronization protocols from single-source or single-channel errors. This approach is particularly interesting when the Watchdog mechanism has stronger cryptographic protection than the primary synchronization mechanism. We specifically discuss the case where the primary mechanism employs one-way communication and is secured with an authentication scheme based on delayed disclosure of cryptographic information. Further, we present results from experiments with an implementation combining such a primary mechanism with a secured two-way control mechanism, which lead us to overall recommend the approach. |
| Zitierform: | M. Langer, K. Teichel, K. Heine, D. Sibold and R. Bermbach, "Guards and Watchdogs in One-Way Synchronization with Delay-Related Authentication Mechanisms," 2019 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication (ISPCS), Portland, OR, USA, 2019, pp. 1-6. doi: 10.1109/ISPCS.2019.8886633 |