Title: Guards and Watchdogs in One-Way Synchronization with Delay-Related Authentication Mechanisms
Authors: 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
Contributors: HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887
Pages:7
Language:en
DOI:10.7795/EMPIR.17IND06.CA.20191126
Resource Type: Text / Article
Publisher: Physikalisch-Technische Bundesanstalt (PTB)
Rights: Private use is allowed for non-profit purposes only.
Relationships: IsVariantFormOf: DOI 10.1109/ISPCS.2019.8886633
Dates: Available: 2019-11-26
File: Download File (application/pdf) 305.74 kB (313081 Bytes)
MD5 Checksum: 1667f8f28cba7fdb8cccc1a6709c017e
SHA256 Checksum: 4ed93e78caae3f7ed76c3f748a26beef35d47ea8deac0a7eebc3ef99c6829bca
Keywords: Synchronization ; Protocols ; Servers ; Cryptography ; Clocks ; Global Navigation Satellite System (GNSS)
Abstract: 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.
Citation: 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