Carsten Bormann <[email protected]> wrote:
    > That is getting closer to my question “what does it mean for
    > (something) to be signed”?

    > Apparently, this is a statement from an initiator, valid within the
    > session-id, optionally scoped to the locator option, and expressed in
    > the objective.  These four are picked out of the message.  The
    > mechanism is specific to M_FLOOD and needs to be re—done for any other
    > message type.

    > The signed-data is missing a freshness component, which is either an
    > absolute timestamp (like CWT exp, possibly enhanced with nbf/iat info)
    > or an epoch marker.

Yes. Toerless thinks it might be contained in the session-id, but I've been
sitting on the fence about that.

    > We want the objective to stand alone for forward compatibility; hence
    > the signature would have a detached payload.

    > What I don’t understand is why the signature then needs to be encoded
    > as part of the objective.  Why can’t I sign a combination of objectives
    > that are only valid as that combination?

I think it could go somewhere else, but I'd like to first understand an
example of this combination.




--
Michael Richardson <[email protected]>   . o O ( IPv6 IøT consulting )
           Sandelman Software Works Inc, Ottawa and Worldwide




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