Re: [saag] IETF 93 Agenda Request - Key Discovery

[Viktor Dukhovni <[e-mail]>]

On Wed, Jul 22, 2015 at 09:18:15AM +0200, ? Matt Miller wrote:

> However, do not confuse RFC 7565 "acct:" URIs for email addresses.
> Yes, they look a lot like an email address, as a "xmpp:" or "sip:" URI
> can look a lot like an email address.  The "acct:" URI is for a
> generic account identifier; it could be a placeholder to email, IM,
> VoIP, filesharing, etc.
> 
> My draft is intended for more than email.

A major difficulty is that email addresses and "accounts", are not
necessarily in one to one correspondence or even "few to one"
correspondence.  

How is one to know which "acct" URI is applicable to finding the
keys for a particular email recipient?  I probably should not even
be able to easily find out the login account behind a particular
email address.

Is the proposal intended to support key discovery for first contact?
If so how is the sender (of an email say), going to the find the
associated account to query?

Or is the sender expected to have previously received an "acct"
URI out-of-band and is only using it to maintain key freshness?

It still seems like this proposal is not a natural fit for email.
Perhaps it is better applicable to other protocols...

-- 
	Viktor.