4 research outputs found
Quantifying Effect of Network Latency and Clock Drift on Time-Driven Key Sequencing
Proc. IEEE First International Workshop on Assurance in Distributed Systems and Networks, Vienna, Austria, July 2002.The article of record as published may be found at http://doi.ieeecomputersociety.org/10.1109/ICDCSW.2002.1030745Time-driven Key Sequencing (TKS) is a key management
technique that synchronizes the session key used by a set of
communicating principals based on time of day. This relatively
low cost method of session key synchronization has
been used in specialized distributed systems with low-end
communicating devices where sessions are sparse and each
session spans a short time period comprising a small number
of messages. In this paper, we describe how TKS may be useful in
several scenarios involving high speed computer networks.
More importantly, we present a performance model of TKS
and conduct a detailed analysis to determine the impact of
clock drift and network latency on the required key refresh
rate. We give the exact conditions for determining the range
of adequate key refresh rates, and demonstrate that the derived
conditions are sufficient to ensure that data are both
protected and deliverable. Interestingly, these conditions
may be used to obtain a key refresh rate that can tolerate
a maximum amount of clock drift after other parameters in
the system are fixed