S/MIME Capabilities for Public Key Definitions
RFC 6664, “S/MIME Capabilities for Public Key Definitions”, is an Informational document published in July 2012 by J. Schaad. The canonical text is published by the RFC Editor.
Abstract
This document defines a set of Secure/Multipurpose Internet Mail Extensions (S/MIME) Capability types for ASN.1 encoding for the current set of public keys defined by the PKIX working group. This facilitates the ability for a requester to specify information on the public keys and signature algorithms to be used in responses. "Online Certificate Status Protocol Algorithm Agility" (RFC 6277) details an example of where this is used. This document is not an Internet Standards Track specification; it is published for informational purposes.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
The canonical text of RFC 6664 is hosted at rfc-editor.org. Available in TXT,HTML.
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