Re: [ipwave] MAC Address minor textual issue

[John Kenney <[e-mail]>]

Hi Tony,

Frequent identifier changes are one component of the privacy protection
solution in DSRC. If IP is involved, I believe you are correct that IP
addressing would need to change in synchrony with other identifiers. That's
partly what I meant by "cross-layer and systemic." I don't know what the
technical challenges associated with that are, but I believe that is the
requirement where privacy needs to be protected.

You're right to have concerns, but these are technical concerns that stem
from privacy requirements, not privacy concerns. We have good solutions, so
I want to avoid saying there are "strong privacy concerns." We would not
deploy technology for which there were strong privacy concerns.

To use an analogy, it would be horrible if a plane crashed, but the people
flying on it need not have "strong concerns" that it will.  The plane was
designed, built, and maintained according to strong requirements to make
sure it doesn't crash.

Thanks,
John


On Thu, May 18, 2017 at 8:00 AM, Tony Li <[e-mail]> wrote:

>
> On May 18, 2017, at 7:50 AM, John Kenney <[e-mail]>
> wrote:
>
> I do not agree with the statement that "there are strong privacy
> concerns". I suggest changing "concerns" to "requirements".
>
> I think stating that there are strong concerns conveys a sense of this
> being a big unsolved problem. For the DSRC/ITS-G5 community this is not the
> case. Privacy protection, including careful avoidance of PII in messages,
> pseudonymous certificates, and frequent identifier randomization, has been
> designed into DSRC/ITS-G5 from day 1.
>
>
> Well, I for one am still mystified by how the solution maps to IP.  DSRC
> can do all of this work, but if my IP addressing doesn’t change in
> synchrony, it seems like it all doesn’t help. And if the IP addresses do
> change in synchrony, you abort upper layer TCP connections.
>
> So I’m still concerned.
>
> Tony
>
>


-- 
John Kenney
Director and Principal Researcher
Toyota InfoTechnology Center, USA
465 Bernardo Avenue
Mountain View, CA 94043
Tel: [phone]. Mobile: [phone]