This class describes requirements specifically of interest for TOEs that are used for the transport of information. Families within this class deal with non-repudiation.
Figure D.1 - Communication class decomposition
Figure D.1 shows the decomposition of this class into its constituent components.
In this class the concept of "information" is used. This information should be interpreted as the object being communicated, and could contain an electronic mail message, a file, or a set of predefined attribute types.
In the literature, the terms 'proof of receipt' and 'proof of origin' are commonly used terms. However it is recognised that the term 'proof' might be interpreted in a legal sense to imply a form of mathematical rationale. The components in this class interpret the de-facto use of the word 'proof' in the context of 'evidence' that the TSF demonstrates the non-repudiated transport of types of information.