OIDs Used with S/MIME
Appendix A of the S/MIME spec lists many of the OIDs needed for
S/MIME developers. However, the spec only lists the OIDs for things
that are named in the spec. The following two files are needed by
developers in order to understand all the OIDs used in S/MIME implementations.
The file sm-oid.asn lists the
official S/MIME OID arc, maintained by Russ Housley.
The file other-smime-oids.asn
lists other OIDs that S/MIME
developers should be aware of. It is the repository of known OIDs
used in S/MIME development.