Re: [TLS] I-D Action: draft-ietf-tls-negotiated-ff-dhe-10.txt
Tony Arcieri <bascule@gmail.com> Wed, 03 June 2015 06:53 UTC
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From: Tony Arcieri <bascule@gmail.com>
Date: Tue, 02 Jun 2015 23:53:31 -0700
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To: Yuhong Bao <yuhongbao_386@hotmail.com>
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Cc: Geoffrey Keating <geoffk@geoffk.org>, TLS WG <tls@ietf.org>
Subject: Re: [TLS] I-D Action: draft-ietf-tls-negotiated-ff-dhe-10.txt
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Perhaps you have a test case with a Java 6 or 7 client using the Sun/Oracle JCE provider? What *actually* happens there? On Tue, Jun 2, 2015 at 11:52 PM, Tony Arcieri <bascule@gmail.com> wrote: > Yes sorry I meant ClientKeyExchange... > > But can you explain to me how this solves the problem for legacy clients? > > On Tue, Jun 2, 2015 at 11:52 PM, Yuhong Bao <yuhongbao_386@hotmail.com> > wrote: > >> The client don't receive the ServerKeyExchange message containing the DHE >> key at all until after they sent the ClientHello. >> >> ________________________________ >> > From: bascule@gmail.com >> > Date: Tue, 2 Jun 2015 23:35:46 -0700 >> > To: geoffk@geoffk.org >> > CC: tls@ietf.org >> > Subject: Re: [TLS] I-D Action: draft-ietf-tls-negotiated-ff-dhe-10.txt >> > >> > On Tue, Jun 2, 2015 at 11:32 PM, Geoffrey Keating >> > <geoffk@geoffk.org<mailto:geoffk@geoffk.org>> wrote: >> > It's covered in section 4: >> > >> > If at least one FFDHE ciphersuite is present in the client >> > ciphersuite list, and the Supported Groups extension is either absent >> > from the ClientHello >> > >> > Unless I'm mistaken, unless you configure the >> > jdk.tls.disabledAlgorithms property explicitly (with e.g. "DHE keySize >> >> 2048"), Java clients are aborting *before* they send the ClientHello. >> > Please let me know if you're seeing otherwise. I could be mistaken and >> > perhaps there's a server-side workaround for this that isn't "disable >> > all DHE ciphersuites". But this is what I've personally observed and >> > have been advising people about. >> > >> > I'm not saying it can't be fixed with additional >> > configuration/errata/etc, I'm arguing that it's *breaking clients in >> > the field right now* >> > >> > tl;dr: I am seeing *widespread TLS breakages* because of this resulting >> > in *huge outages* for Java clients >> > >> > -- >> > Tony Arcieri >> > >> > _______________________________________________ TLS mailing list >> > TLS@ietf.org https://www.ietf.org/mailman/listinfo/tls >> >> > > > > -- > Tony Arcieri > -- Tony Arcieri
- [TLS] I-D Action: draft-ietf-tls-negotiated-ff-dh… internet-drafts
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Tony Arcieri
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Hubert Kario
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Tony Arcieri
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Yuhong Bao
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Tony Arcieri
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Tony Arcieri
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Geoffrey Keating
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Tony Arcieri
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Tony Arcieri
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Tony Arcieri
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Yuhong Bao
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Tony Arcieri
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Tony Arcieri
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Yuhong Bao
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Tony Arcieri
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Tony Arcieri
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Dave Garrett
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Peter Gutmann
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Tony Arcieri
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Tony Arcieri
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Tony Arcieri
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Peter Gutmann
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Tony Arcieri
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Nikos Mavrogiannopoulos
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Hubert Kario
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Michael D'Errico
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Peter Bowen
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Dave Garrett
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Daniel Kahn Gillmor
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Ilari Liusvaara
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Dave Kern
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Dave Garrett
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Tony Arcieri
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Daniel Kahn Gillmor
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Jeffrey Walton
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Dave Garrett
- [TLS] drop ffdhe2048? (was: I-D Action: draft-iet… Dave Garrett
- Re: [TLS] drop ffdhe2048? (was: I-D Action: draft… Eric Rescorla
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Dave Kern
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Tony Arcieri
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Tony Arcieri
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Nikos Mavrogiannopoulos
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Ilari Liusvaara
- Re: [TLS] I-D Action: draft-ietf-tls-negotiated-f… Tony Arcieri