Re: [dnsext] RSA algorithm padding in RFC 5702, RSASSA-PSS

Olafur Gudmundsson <ogud@ogud.com> Thu, 21 October 2010 00:18 UTC

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Date: Wed, 20 Oct 2010 20:14:56 -0400
From: Olafur Gudmundsson <ogud@ogud.com>
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CC: namedroppers <namedroppers@ops.ietf.org>
Subject: Re: [dnsext] RSA algorithm padding in RFC 5702, RSASSA-PSS
References: <201010201707.01361.hanno@hboeck.de>
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On 20/10/2010 11:07 AM, Hanno Böck wrote:
> Hi,
>
> I'm currently working on a study project about RSASSA-PSS. This is a padding
> variant with security proofs and standardized within PKCS #1 2.1.
>
> I saw that dnssec currently seems to use the old PKCS #1 1.5 padding methods
> (RFC 5702, Section 3). I wonder if there was any discussion about that
> decision (there is some hint in section 8.1). RFC 5702 was published in 2009,
> so it's a pretty new standard.
>
> Are there any plans to support algorithms with EMSA-PSS-padding within dnssec
> in the future?
>

There are no such plans at this point in time.
RFC5702 is likely to be the last change to any RSA algorithm for DNSSEC,
as ECC based algorithms are likely to become the recommended algorithms 
in the not so distant future.

	Olafur