Delay attacks — Implication on NTP and PTP time synchronization

Author

Ullmann, Markus ; Vögeler, Matthias

Author_Institution

Fed. Office for Inf. Security, Bonn, Germany

fYear

2009

fDate

12-16 Oct. 2009

Firstpage

1

Lastpage

6

Abstract

In this paper specific variants of delay attacks are examined. First, the Network Time Protocol is regarded. Second, delay attacks and implications on the time synchronization of the Precise Time Protocol are described. In particular, consequences for the offset calculation O_prox are regarded. At the end of the paper possible countermeasurements are described.

Keywords

cryptographic protocols; delays; synchronisation; telecommunication security; NTP time synchronization; PTP time synchronization; cryptographic protocols; delay security attacks; network time protocol; precise time protocol; time synchronization; Clocks; Counting circuits; Cryptographic protocols; Delay effects; Delta modulation; Master-slave; Propagation delay; Synchronization; Time measurement; World Wide Web; 2008); IEEE 1588 (v2; Network Time Protocol (NTP); Precise Time Protocol (PTP); countermeasurements; cryptographic protocols; delay attacks; implication on time synchronization;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Clock Synchronization for Measurement, Control and Communication, 2009. ISPCS 2009. International Symposium on

Conference_Location

Brescia

Print_ISBN

978-1-4244-4391-8

Electronic_ISBN

978-1-4244-4392-5

Type

conf

DOI

10.1109/ISPCS.2009.5340224

Filename

5340224