Re: [lamps] Adam Roach's Discuss on draft-ietf-lamps-rfc5280-i18n-update-03: (with DISCUSS and COMMENT)

Alexey Melnikov <aamelnikov@fastmail.fm> Thu, 12 October 2017 06:05 UTC

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From: Alexey Melnikov <aamelnikov@fastmail.fm>
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Date: Thu, 12 Oct 2017 07:08:47 +0100
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To: Russ Housley <housley@vigilsec.com>, Adam Roach <adam@nostrum.com>
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Subject: Re: [lamps] Adam Roach's Discuss on draft-ietf-lamps-rfc5280-i18n-update-03: (with DISCUSS and COMMENT)
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On 11 Oct 2017, at 19:22, Russ Housley <housley@vigilsec.com> wrote:

>> ----------------------------------------------------------------------
>> DISCUSS:
>> ----------------------------------------------------------------------
>> 
>> The final paragraph in Section 2.4 reads:
>> 
>>  Implementations should convert the local-part and the host-part of
>>  internationalized email addresses placed in these extensions to
>>  Unicode before display.
>> 
>> The mention of converting "local-part" to "Unicode" has a very strong
>> implication that the local-part of internationalized email addresses can be
>> (should be?) ACE-encoded (or otherwise converted to some non-Unicode encoding).
>> Unless my understanding of internationalized email addresses is wildly wrong
>> (and that may be the case), this isn't how they work: the local-part *is* in
>> Unicode, and so conversion to Unicode doesn't make sense.
>> 
>> This seems highly likely to lead developers down the path of ACE-encoding the
>> local-part component of email addresses, which would cause incompatibilities.
> 
> Right.  I'll correct that text.

Good catch. I think just deleting local-part from the list should do.