Re: [idn] Why follow IDNA with UTF-8?

[Eric A. Hall]

> And, regarding UTF-8 or ACE, the most important thing is the nameprep
> and not what encoding the labels uses. I am sorry to say that I am
> extremely worried that if we go with an encoding that is implemented
> (like UTF-8) people will not do nameprep.

Any application which is modern enough to use the new API should also be
applying the nameprep rules. If it doesn't, it is broken.

Just-use-ACE is actually the most succeptible to this particular problem,
since old and new applications pass data into the system through the old
APIs equally, without any distinctive markings. Was it nameprepped? nobody
knows... At least with the new API approach we know that a particular IDN
was most likely nameprepped.

-- 
Eric A. Hall                                        http://www.ehsco.com/
Internet Core Protocols          http://www.oreilly.com/catalog/coreprot/