Year
2000
Abstract
Acceptance of nuclear materials into a monitoring regime is complicated if the materials have classified characteristics. An “information barrier” can be employed to separate classified measurements and data from a totally unclassified display. This information barrier must meet two criteria: (1) classified information cannot be released to the monitoring party, and (2) the monitoring party must be convinced that the unclassified output accurately represents the classified input. A complete information barrier system requires physical protection and procedural controls in addition to hardware and software elements. In this paper, we will examine the relative merits of constructing each element of the information barrier system in hardware, software, or a combination of the two in addition to other developments in information barrier design. A successful information barrier uses all of these techniques in order to meet both criteria mentioned above.