Abstract
A preliminary model is introduced in this paper whereby data and its associated security properties are treated as a single atomic unit of information in a hardware-only con- text. Security-tagged data allows each datum to be properly manipulated with a predictable assurance. This paper ad- dresses some of the issues and overhead due to the data size increase of tagged data. This work is a part of a larger issue that instruction set architectures (ISAs) do not consider the information assurance implications in its operational envi- ronment.