Re: [Crypto-panel] [Cfrg] I-D Action: draft-irtf-cfrg-re-keying-08.txt

"Paterson, Kenny" <Kenny.Paterson@rhul.ac.uk> Sun, 29 October 2017 16:43 UTC

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From: "Paterson, Kenny" <Kenny.Paterson@rhul.ac.uk>
To: Yaron Sheffer <yaronf.ietf@gmail.com>, "crypto-panel@irtf.org" <crypto-panel@irtf.org>
CC: "alexey.melnikov@isode.com" <alexey.melnikov@isode.com>, "Stanislav V. Smyshlyaev" <smyshsv@gmail.com>
Thread-Topic: [Crypto-panel] [Cfrg] I-D Action: draft-irtf-cfrg-re-keying-08.txt
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Date: Sun, 29 Oct 2017 16:43:12 +0000
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Subject: Re: [Crypto-panel] [Cfrg] I-D Action: draft-irtf-cfrg-re-keying-08.txt
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Hi Yaron,

Thanks.

A couple of weeks would be fine I think - the authors can't make any
changes now before IETF 100 anyway, because of the cutoff for new drafts.

Cheers,

Kenny 

On 29/10/2017 16:16, "Yaron Sheffer" <yaronf.ietf@gmail.com> wrote:

>Hi Kenny,
>
>I can take this one, but it will be more than a few days. What is the
>time expectation?
>
>Thanks,
>	Yaron
>
>On 29/10/17 18:08, Paterson, Kenny wrote:
>> Dear CFRG panel members,
>> 
>> draft-irtf-cfrg-re-keying-08
>> (https://tools.ietf.org/html/draft-irtf-cfrg-re-keying-08) is ready for
>> panel review.
>> 
>> Any volunteers to look at this one?
>> 
>> (We don't expect too many more review requests for a while after this
>>and
>> draft-mcgrew-hash-sigs.)
>> 
>> Regards,
>> 
>> Kenny
>> 
>> On 09/10/2017 16:14, "Stanislav V. Smyshlyaev" <smyshsv@gmail.com>
>>wrote:
>> 
>>> Dear colleagues,
>>>
>>>
>>> In Prague, we listed several todo's about our Re-keying draft; thanks
>>>to
>>> the efforts of the persons listed in the contributors and "thanks to"
>>> lists now we have a new version, addressing the comments and concerns
>>> that have been
>>> discussed earlier.
>>> There have been several updates of the draft, major changes from the
>>>July
>>> version (discussed at IETF 99 CFRG meeting) are the following:
>>>
>>>
>>> 1) New test examples have been added: external re-keying with a
>>>parallel
>>> construction based on AES-256, external re-keying with a serial
>>> construction based on SHA-256, OMAC-ACPKM-Master mode with AES-256,
>>> as agreed.
>>> 2) CCM-ACPKM and CCM-ACPKM-Master, OFB-ACPKM-Master modes have been
>>> removed from the document, as agreed.
>>> 3) “Key Hierarchy Construction” section has been added.
>>> 4) The more restrictive terminology for different types of keys has
>>>been
>>> introduced: "initial key", "section key" (data processing key in
>>>internal
>>> re-keying), "master key", "section key material", "subkey",
>>> "frame key" (data processing key in external re-keying).
>>> 5) The additional hash calculation for ICB value (if c!=32) has been
>>> removed from GCM-ACPKM and GCM-ACPKM-Master modes.
>>>
>>>
>>> The current version
>>> (https://tools.ietf.org/html/draft-irtf-cfrg-re-keying-08) seems to
>>>take
>>> all concerns and considerations we've discussed (in Chicago, in Prague
>>> and in e-mails) into account – please let me know if we've missed
>>> something. If there won't be any objections, I think we should start
>>> thinking about moving to the review phase.
>>>
>>>
>>> Kindest regards,
>>> Stanislav
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> 2017-10-09 17:36 GMT+03:00 <internet-drafts@ietf.org>rg>:
>>>
>>>
>>> A New Internet-Draft is available from the on-line Internet-Drafts
>>> directories.
>>> This draft is a work item of the Crypto Forum RG of the IRTF.
>>>
>>>         Title           : Re-keying Mechanisms for Symmetric Keys
>>>         Author          : Stanislav Smyshlyaev
>>>         Filename        : draft-irtf-cfrg-re-keying-08.txt
>>>         Pages           : 49
>>>         Date            : 2017-10-09
>>>
>>> Abstract:
>>>    A certain maximum amount of data can be safely encrypted when
>>>    encryption is performed under a single key.  This amount is called
>>>    "key lifetime".  This specification describes a variety of methods
>>>to
>>>    increase the lifetime of symmetric keys.  It provides external and
>>>    internal re-keying mechanisms based on hash functions and on block
>>>    ciphers, that can be used with modes of operations such as CTR, GCM,
>>>    CBC, CFB and OMAC.
>>>
>>>
>>> The IETF datatracker status page for this draft is:
>>> https://datatracker.ietf.org/doc/draft-irtf-cfrg-re-keying/
>>>
>>> There are also htmlized versions available at:
>>> https://tools.ietf.org/html/draft-irtf-cfrg-re-keying-08
>>> https://datatracker.ietf.org/doc/html/draft-irtf-cfrg-re-keying-08
>>>
>>> A diff from the previous version is available at:
>>> https://www.ietf.org/rfcdiff?url2=draft-irtf-cfrg-re-keying-08
>>>
>>>
>>> Please note that it may take a couple of minutes from the time of
>>> submission
>>> until the htmlized version and diff are available at
>>> tools.ietf.org <http://tools.ietf.org>.
>>>
>>> Internet-Drafts are also available by anonymous FTP at:
>>> ftp://ftp.ietf.org/internet-drafts/
>>>
>>> _______________________________________________
>>> Cfrg mailing list
>>> Cfrg@irtf.org
>>> https://www.irtf.org/mailman/listinfo/cfrg
>>>
>>>
>>>
>>>
>>>
>>>
>> 
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>>