Re: [CFRG] HPKE: final call for objections on the changes

Martin Thomson <mt@lowentropy.net> Thu, 05 August 2021 08:46 UTC

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Date: Thu, 05 Aug 2021 18:46:24 +1000
From: "Martin Thomson" <mt@lowentropy.net>
To: cfrg@irtf.org
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Archived-At: <https://mailarchive.ietf.org/arch/msg/cfrg/YWFNF_29ieRLcUScILByu2xoUlg>
Subject: Re: [CFRG] HPKE: final call for objections on the changes
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I have read, implemented, and deployed the changes in HPKE since -07.

I do want to confirm however that the change in test vectors between -08 (where the final version string was added) and -09 was just the result of missing the test vectors in the -08 update.  I've code that uses the source JSON file, which were updated one day after -08 was published.

Nit: in \S9.7.5, the first sentence could use an em-dash (' - ' or ' -- ' to taste):
   If the randomness used for KEM encapsulation is bad - i.e., of low	
   entropy or compromised because of a broken or subverted random number	
   generator - the confidentiality guarantees of HPKE degrade	
   significantly.

On Thu, Aug 5, 2021, at 18:03, Stanislav V. Smyshlyaev wrote:
> Dear CFRG,
> 
> The HPKE draft (https://datatracker.ietf.org/doc/draft-irtf-cfrg-hpke/) 
> has been updated (versions -08, -09, -10, -11, see 
> https://www.ietf.org/rfcdiff?url1=draft-irtf-cfrg-hpke-07&url2=draft-irtf-cfrg-hpke-11) based on the comments obtained during the IRSG review (many thanks to Kirsty and Spencer!). 
> 
> Colin Perkins and the CFRG chairs would like to do a final call for 
> objections on the changes with the RG.
> 
> This final call will end on August 15th.
> 
> Please send your comments in reply to this message or directly to Colin 
> Perkins and the CFRG chairs. 
> 
> Best regards,
> Stanislav (on behalf of CFRG Chairs)
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