Ranga,

It depends ;-)

Pledge P registers at a specific registrar B. B examines the audit log and
determines that P was previously registered at another registrar A. Now
B can see from theidentity of A in the audit log if A belongs to the
same trust domain as B. If yes, then B would likely happily re-register
P. Use-case: A failed and was replaced by B, or multiple registrars in
the trust domain. Alternative, A is not known to be in the same trust
domain by B, so B would refuse to register P, probably raise an
exception to operations. In this case, i could come up with a range of
use case examples what operations would do next.

Does this help ?

Cheers
    Toerless

P.S.: Experimenting if the old alias for the co-authors still work. I
think IETF tools keep it alife for a few years.

On Fri, Feb 08, 2019 at 02:21:57PM -0500, M. Ranganathan wrote:
> Clarification on question below:
> 
> On Fri, Feb 8, 2019 at 11:22 AM M. Ranganathan <[email protected]> wrote:
> 
> > Hello,
> >
> > I am reading the voucher artifact RFC 8366. I am confused about how the
> > "audit voucher" (page 6) is supposed to be used. Specifically, the text
> > says  " The registrar mitigates a MiTM registrar by auditing that an
> > unknown MiTM registrar does not appear in the log entries. " How can it do
> > this? Any concrete example that clarifies this use case would help me
> > understand.
> >
> >
> What is confusing me is the interpretation of the term "Man In The Middle"
> (MiTM). Am I correct in assuming that this refers to previous registrars
> where the device may have successfully registered?
> 
> 
> > I am not sure if this is the correct mailing list for this question.
> > Thanks in advance for your help.
> >
> > Regards,
> >
> > Ranga
> >
> > --
> > M. Ranganathan
> >
> >
> 
> -- 
> M. Ranganathan

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