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Re: [Curdle] DH Group Exchange in SSH (RFC 4419) - Avoiding Backsdoors

Peter Gutmann <pgut001@cs.auckland.ac.nz> Fri, 30 September 2016 06:52 UTC

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From: Peter Gutmann <pgut001@cs.auckland.ac.nz>
To: "Mark D. Baushke" <mdb@juniper.net>, "ietf-ssh@NetBSD.org" <ietf-ssh@NetBSD.org>, "curdle@ietf.org" <curdle@ietf.org>
CC: "frg@irtf.org" <frg@irtf.org>
Subject: Re: [Curdle] DH Group Exchange in SSH (RFC 4419) - Avoiding Backsdoors
Thread-Topic: [Curdle] DH Group Exchange in SSH (RFC 4419) - Avoiding Backsdoors
Thread-Index: AQHSGmBugXe6KnFfLEybUJVk/zgfHaCRlcvK
Date: Fri, 30 Sep 2016 06:38:59 +0000
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Mark D. Baushke <mdb@juniper.net> writes:

>Should RFC 4419 - "Diffie-Hellman Group Exchange for the Secure Shell (SSH)
>Transport Layer Protocol" be deprecated?

No.

If you're worried about a malicious server then you'd really have to deprecate
RFCs 4251 to 4253, since only that will protect you from one.

Peter.

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