Re: [Dcrup] Cal to adopt draft-kitterman-dcrup-dkim-usage

Russ Housley <housley@vigilsec.com> Mon, 22 May 2017 20:39 UTC

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From: Russ Housley <housley@vigilsec.com>
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Date: Mon, 22 May 2017 16:39:05 -0400
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To: Rich Salz <rsalz@akamai.com>
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Subject: Re: [Dcrup] Cal to adopt draft-kitterman-dcrup-dkim-usage
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This document call for RSA using PKCS#1 v1.5 with SHA-256 and allows keys as small as 1024 bits.  Keys this short need to be changed often, and the security considerations need to be expanded to explain the situation.  It should probably say that long-lived keys need to be at least 2048 bits, and the shorter keys need to be change <TBD> often.

Russ


> On May 19, 2017, at 10:47 PM, Salz, Rich <rsalz@akamai.com> wrote:
> 
>> https://datatracker.ietf.org/doc/draft-kitterman-dcrup-dkim-usage/
> 
> We had some discussion, mostly me and Scott admittedly.
> 
> What do folks thing of the WG adopting this?
> 
> Please reply by next Friday.