YASIR: A Low-Latency, High-Integrity Security Retrofit for Legacy SCADA Systems

Dartmouth Technical Report TR2007-603

	Patrick P. Tsang
	Sean W. Smith

Date: September 2007

URL (PDF): <http://www.cs.dartmouth.edu/reports/TR2007-603.pdf> (520KB)

Abstract:
 We construct a bump-in-the-wire (BITW) solution that retrofits
 security into time-critical communications over bandwidth-limited
 serial links between devices in Supervisory Control And Data
 Acquisition (SCADA) systems. Previous BITW solutions fail to provide
 the necessary security within timing constraints; the previous
 solution that does provide the necessary security is not BITW.  At a
 comparable hardware cost, our BITW solution provides sufficient
 security, and yet incurs minimal end-to-end communication latency. A
 microcontroller prototype of our solution is under development.

Note:
 Updated as TR2008-617.
 You can find it
 <a href=http://www.cs.dartmouth.edu/reports/abstracts/TR2008-617/>here</a>.