Thank you Ben and Jari.  The updates will appear shortly int he new version.

Best regards,
Kathleen

On Sun, Feb 18, 2018 at 12:32 PM, Ben Campbell <b...@nostrum.com> wrote:
> Thanks, Jari, this all looks good to me.
>
> Ben.
>
>> On Feb 18, 2018, at 5:46 AM, Jari Arkko <jari.ar...@piuha.net> wrote:
>>
>> Hi Ben,
>>
>> And thanks for your feedback.
>>
>>> First bullet point: "or other new concerns." makes this very open ended. Is
>>> this planned to be a standing working group? If not, can we put some
>>> constraints around "other new concerns”?
>>
>> Understood.
>>
>> Note that the sentence starts with “Update the security considerations…”
>> so the goal of these updates is about discovering new vulnerabilities and
>> the like; not any random other concerns. That being said, the text already
>> covers new vulnerabilities, so may be this is merely unnecessary text.
>>
>> How about the following text:
>>
>> OLD:
>>    Update the security
>>    considerations relating to EAP TLS, to document the implications
>>    of using new vs. old TLS version, any recently gained new
>>    knowledge on vulnerabilities, and the possible implications of
>>    pervasive survellaince or other new concerns.
>>
>> NEW:
>>
>>    Update the security
>>    considerations relating to EAP TLS, to document the implications
>>    of using new vs. old TLS version, any recently gained new
>>    knowledge on vulnerabilities, and the possible implications of
>>    pervasive surveillance.
>>
>> (Also updates a typo.)
>>
>>> The prohibition against obsoleting RFCs seems harsh. It's possible to 
>>> require
>>> backwards compatibility without this restriction. I think it should be up to
>>> the working group to decide whether work can be better organized using 
>>> updates
>>> or bis-drafts.
>>
>> There was a detailed discussion among the participants about this aspect and
>> a reasonable, strong opinion that the current EAP-TLS RFC remain as
>> the primary, and that the new RFC would be an update to it when it comes
>> to TLS 1.3.
>>
>> That being said, hmm… even my own draft for EAP-AKA’ bis currently says
>> “Obseletes RFC 5448 (if approved”)… so… how about this:
>>
>> OLD:
>>
>> The current RFCs shall not be obsoleted but
>> rather updated with either new information or instructions on
>> what is needed, for instance, to employ a new TLS version.
>>
>> NEW:
>>
>> The current EAP-TLS RFCs shall not be obsoleted but
>> rather updated with either new information or instructions on
>> what is needed, for instance, to employ a new TLS version.
>>
>>> -3rd paragraph: "And the
>>> understanding of security threats in today's Internet evolves as
>>> well,..."
>>>
>>> I suggest dropping “And"
>>
>> Yes.
>>
>> For Kathleen’s benefit, listing this in OLD/NEW style:
>>
>> OLD:
>>
>> And the
>> understanding of security threats in today's Internet evolves as
>> well, which has driven some of the evolution in these underlying
>> technologies.
>>
>> NEW:
>>
>> The
>> understanding of security threats in today's Internet evolves as
>> well, which has driven some of the evolution in these underlying
>> technologies.
>>
>>> -- 2nd bullet: This is a bit hard to parse. I suggest:
>>>
>>> OLD:
>>>   Update the EAP-AKA' specification (RFC 5448) to ensure that its
>>>    capability to provide a cryptographic binding to network context
>>>    stays in sync with what updates may come to the referenced 3GPP
>>>    specifications through the use of EAP in 5G.
>>> NEW:
>>>    Update the EAP-AKA' specification (RFC 5448) to ensure that its
>>>    capability to provide a cryptographic binding to network context
>>>    stays in sync with any 5G related updates to the referenced 3GPP
>>>    specifications.
>>
>> Seems good. Thanks.
>>
>>> Same bullet point: The second paragraph seems out of place; was it intended 
>>> to
>>> be its own bullet point?
>>
>> I don’t have a strong opinion, but the two somewhat separate issues
>> were listed under the same bullet item since both of them should
>> go into the same draft (rfc5448bis). The EAP TLS bullet item
>> does the same thing, i.e., update tech + describe new knowledge
>> of vulnerabilities.
>>
>>> 4th bullet point: The second sentence seems like a non-sequiter. I suggest a
>>> top-level bullet point for "Analyzing opportunities to improve privacy..."
>>
>> I’d be fine with that. Suggested text:
>>
>> OLD:
>>
>>  - Develop an extension to EAP-AKA' such that Perfect Forward Secrecy
>>    can be provided. There may also be privacy improvements that
>>    have become feasible with the introduction of recent identity
>>    privacy improvements in 3GPP networks.
>>
>> NEW:
>>
>>  - Analysing opportunities to improve privacy in EAP-AKA’.
>>
>>    Develop an extension to EAP-AKA' such that Perfect Forward Secrecy
>>    can be provided.
>>
>>    There may also be other privacy improvements that
>>    have become feasible with the introduction of recent identity
>>    privacy improvements in 3GPP networks.
>>
>> Jari
>>
>
>
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-- 

Best regards,
Kathleen

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