[ietf-dkim] Internationalized domain names

[Paul Hoffman]

At 9:30 AM -0700 7/19/06, Douglas Otis wrote:
>On Jul 18, 2006, at 5:25 PM, Paul Hoffman wrote:
>
>>Eric added the following to base-04:
>>        Internationalized domain names MUST be punycode-encoded
>>        [RFC3492].
>>This is very wrong. The Punycode encoded value does not include the 
>>"xn--" string.
>>
>>The text should instead read:
>>        Internationalized domain names MUST be converted using
>>        the  steps in section 4 of [RFC3490] using the ToASCII
>>        function.
>
>Agreed.
>
>Calling this an ACE label which is identified by the "xn--" prefix 
>may avoid some of the confusion.
>
>This could also be written as:
>
>  Internationalized domain names MUST be converted using the
>  steps in section 4 of [RFC3490] into "ACE" labels using the
>  ToASCII function.

No, that's wrong: only the labels that have non-LDH characters are 
converted. Section 4 in IDNA covers this correctly.