Tags and data models
04A tag adds semantic interpretation to the following data item.
Related RFCs and changes
“Updates” changes part of an earlier RFC. “Obsoletes” replaces it. This list shows selected related documents.
DIAGRAM§ 3.4 ↗
RFC 8949 · § 3.4EXAMPLE
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03
Validate semantics
The application applies the tag’s requirements, not only byte parsing.
Protocol participantThreat or exceptionProtocol controlSimplified drawings · precise section references
Read the updated RFC section ↗
A tag is not a separate security guarantee.
- A tag is not a separate security guarantee.
- Tag 0 describes a standard date/time string; other tags define other semantics.
- Applications must specify which tags and values they understand.
Examples are illustrative. Consult the linked RFC and its errata for implementation details.
Read the RFC section ↗Diagrams simplify the RFC. Read the linked sections for complete requirements.
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