RFC 9804: Simple Public Key Infrastructure (SPKI) S-Expressions
In plain English — editorial summary, not part of the RFC
This memo specifies the data structure representation that was devised to support Simple Public Key Infrastructure (SPKI) certificates, as detailed in RFC 2692, with the intent that it be more widely applicable. It has been and is being used elsewhere. There are multiple implementations in a variety of programming languages. Uses of this representation are referred to in this document as "S-expressions". This memo makes precise the encodings of these SPKI S-expressions: It gives a "canonical form" for them, describes two "transport" representations, and also describes an "advanced" format for display to people.
Document record
- Document ID
- RFC9804
- Published
- June 2025
- Authors
- R. Rivest; D. Eastlake 3rd
- Status
- INFORMATIONAL
- Stream
- IETF
- Area
- —
- Pages
- 22
- Also known as
- —
Topics
Also filed under
About this page
The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.
Last checked against the RFC Editor index on . RFCs are never revised after publication; changes are issued as new documents.
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