I do not understand!  My cell phone is not a cojustmputer and access to my
personal accounts whereas I have DOS to them has ruined my life!  I don't
even know how you got my name in the mix of explaining personal keys. I
just want my life back!

[email protected]

On Sat, Aug 9, 2025, 5:01 AM Phillip Hallam-Baker <[email protected]>
wrote:

> I have been doing a lot of work on DNS Handles and have come to the
> surprising conclusion that a handle is not the same as an address
>
> The concept of the DNS is that it is an infrastructure that resolves names
> to services or hosts. The DNS name is the persistent identifier.
>
> Handles subvert this, the DNS name is merely an aide memoire for a public
> key. Once the name has been traded in for the public key, we don't need the
> name any more, the key is authoritative.
>
> This may sound pedantic, because it is. But that is kind of what standards
> are all about.
>
>
> What this means in practice is a somewhat different approach to how
> DANE/DANCE credentials might be used in an IoT environment.
>
> Let us say @alice.example.com authorizes @bob.example.com to program her
> thermostat while he is a house guest.
>
> This means the thermostat gets a message 'add @bob.example.com to the
> list of authorized users' and that is the point that the thermostat fetches
> the TLSA record to get Bob's private root of trust. The Bob that is added
> is the Bob whose root was advertised at the moment the authorization was
> issued. The device doesn't care about subsequent changes of control of the
> handle.
>
> This approach solves the problem of offline access to the device, it
> doesn't matter if the thermostat has lost connection to the external
> network, it is the private root that counts.
>
> Alternatively, the authorization might be mediated by some local trust
> service in which case the translation happens when Bob is added in to the
> local trust service.
>
>
> Crossposting to DANE because the same consideration would apply to server
> certificates in an IoT device to device scenario.
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