Re: [Lwip] WGLC for draft-ietf-lwig-crypto-sensors-03

[Mohit Sethi <[e-mail]>]

Hi Carsten

This document looks at a very specific deployment scenario where 
resource-constrained devices sign message objects. Therefore, it only 
documents the performance of ECDSA sign operation.

I do think the numbers of Elliptic curve diffie-hellman key agreement 
are useful for the community and the group should work on documenting 
them. I did discuss this with Tobias (off-the-mailing list) and perhaps 
those numbers can go in a separate document on minimal G-IKEv2. I 
currently have a working implementation of x25519 Diffie-hellman key 
agreement on a R Pi but I don't consider it constrained enough. Once I 
have more numbers, I will definitely contribute. But for now I strongly 
believe that they don't fit into the current document.

--Mohit


On 08/06/2017 02:39 PM, Carsten Bormann wrote:
> Hi Mohit,
>
> One point that came up in the discussion in Prague was Diffie-Hellman performance.
> For a deployment that relies on symmetric keys for mutual authentication, it may be useful to do an (ECC) D-H key agreement to achieve forward security.
> I believe some numbers for that are available?
> It would be useful to include them in order to motivate the use of forward secure key agreement.
>
> Grüße, Carsten
>
>
>> On Aug 6, 2017, at 12:18, Mohit Sethi <[e-mail]> wrote:
>>
>> Hi all
>>
>> The authors of the document believe that it is ready to move forward. During the previous last call we had already received support from several working group members.
>>
>> Based on the feedback during the previous last call, we removed the performance measurements of RSA key sizes smaller than 2048 bits. We also added performance measurements of ECDSA sign operation on ARM 32-bit platforms. Additionally, we improved the text on the need for a random number generator, more guidance on choosing the right platform, and why larger flash memory size is needed for firmware updates. We also removed some extraneous text from the background section. Any further comments are welcome.
>>
>> --Mohit
>>
>>
>> On 07/31/2017 04:23 AM, Zhen Cao wrote:
>>> Hello Everyone,
>>>
>>> This email starts the WGLC for draft-ietf-lwig-crypto-sensors-03
>>> https://tools.ietf.org/html/draft-ietf-lwig-crypto-sensors-03
>>>
>>> This is a second WGLC with the new draft resolving the comments
>>> received from last round.
>>>
>>> We still appreciate very much if could you help review the document
>>> and send your comments to the mailing list. Thank you in advance.
>>>
>>> The WGLC will end in ONE week till August 7th, 2017.
>>>
>>> Thank the authors for their hard work again.
>>>
>>> Best regards,
>>> Zhen
>>>
>>> On Wed, Feb 22, 2017 at 11:15 AM, Zhen Cao <[e-mail]> wrote:
>>>> Hello everyone,
>>>>
>>>> This email starts the WGLC for draft-ietf-lwig-crypto-sensors-02
>>>> (https://tools.ietf.org/html/draft-ietf-lwig-crypto-sensors-02)
>>>>
>>>> Could you help review the document and send your comments to the
>>>> mailing list. Thank you in advance.
>>>>
>>>> The WGLC will end in two weeks from now.
>>>>
>>>> BR,
>>>> Zhen
>>> _______________________________________________
>>> Lwip mailing list
>>> [e-mail]
>>> https://www.ietf.org/mailman/listinfo/lwip
>>
>> _______________________________________________
>> Lwip mailing list
>> [e-mail]
>> https://www.ietf.org/mailman/listinfo/lwip
>>