Re: [CFRG] Questions for the group from the HPKE presentation

"Blumenthal, Uri - 0553 - MITLL" <uri@ll.mit.edu> Mon, 09 August 2021 15:51 UTC

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From: "Blumenthal, Uri - 0553 - MITLL" <uri@ll.mit.edu>
To: Natanael <natanael.l@gmail.com>
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Thread-Topic: [CFRG] Questions for the group from the HPKE presentation
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Subject: Re: [CFRG] Questions for the group from the HPKE presentation
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Yes, SIV is what naturally comes to mind (though I'm not "married" to SIV - it's just what appears readily available and reasonably-well tested).

Shouldn't CFRG make a statement to IESG, mentioning the concerns with nonce misuse, and recommending that only resistant modes are adopted?

Thanks

Regards,
Uri

> On Aug 9, 2021, at 10:54, Natanael <natanael.l@gmail.com> wrote:
> 
> 
> 
> Den mån 9 aug. 2021 16:47Blumenthal, Uri - 0553 - MITLL <uri@ll.mit.edu> skrev:
>> Semi-related. Am I the only one who became rather antagonistic to AEAD modes that can't survive nonce reuse/misuse?
>> 
>> I'd like to see only nonce misuse-resistant AEAD as we move forward.
> 
> 
> FWIW I am also strongly in favor of MRAE modes (misuse resistant authenticated encryption, like SIV modes). Robustness properties are only becoming more important. 
> 
>