I know the draft-housley-cms-content-constraints-extn-02 ID isn't a PKIX WG item, but there might be people on this list who would be interested in an application of the CCC ID. The Encrypted Key Package Content Type (http://tools.ietf.org/html/draft-turner-encryptedkeypackagecontenttype-00) was designed specifically for use with CCC. There is also an algorithm companion document to ensure interoperability and it mimics the algorithms and key sizes in S/MIME 3.2 (draft-ietf-smime-3851bis): http://tools.ietf.org/html/draft-turner-asymmetrickeyformat-algs-00. Comments are welcome. spt
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