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Re: [DNSOP] New Version Notification for draft-muks-dnsop-dns-message-checksums-00.txt

Mukund Sivaraman <muks@isc.org> Wed, 30 September 2015 13:23 UTC

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Date: Wed, 30 Sep 2015 18:52:52 +0530
From: Mukund Sivaraman <muks@isc.org>
To: Joe Abley <jabley@hopcount.ca>
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References: <20150928155157.GB19077@jurassic.l0.malgudi.org> <BB4FDC1E-4FC7-4583-8314-5D3BBCB3531A@hopcount.ca> <20150930023229.GA11615@jurassic.l0.malgudi.org> <9A059CF2-96EE-4B68-8EF2-370CD8ABFDD8@hopcount.ca>
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Subject: Re: [DNSOP] New Version Notification for draft-muks-dnsop-dns-message-checksums-00.txt
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Hi Joe

On Wed, Sep 30, 2015 at 08:28:21AM -0400, Joe Abley wrote:
> Surely the threat models here depend on the algorithm. I am no
> cryptographer, but it seems reasonable to mention the characteristics
> of the hash function that are important to minimise the risk of this
> kind of attack, especially when there are other motivations in
> choosing an algorithm (such as the speed at which it can be
> calculated) that might weaken the mechanism.

In the git repository, Appendix A now mentions the characteristics of
the hash function that are important to minimise the risk of this kind
of attack. A text version of the current copy can be viewed here:

http://users.isc.org/~muks/draft-muks-dnsop-dns-message-checksums.txt

		Mukund

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