Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CCM: a meta-analysis
mrex@sap.com (Martin Rex) Sat, 24 January 2015 05:14 UTC
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To: Tom Ritter <tom@ritter.vg>
Date: Sat, 24 Jan 2015 06:14:44 +0100
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From: mrex@sap.com
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Cc: Manuel Pégourié-Gonnard <mpg@polarssl.org>, tls@ietf.org
Subject: Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CCM: a meta-analysis
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Tom Ritter wrote: > "Martin Thomson" <martin.thomson@gmail.com> wrote: >> >> Michael Clark <michael@metaparadigm.com> wrote: >>> >>> Interesting. Should draft-pironti-tls-length-hiding-01 be added to >>> Related Active Documents (not working group documents) section >> >> That's an automatically generated list. I suspect the reason that it >> doesn't appear is that it is presently expired. > > Something I feel very bad about. I am a big proponent of making length > hiding possible in 1.3 and need to find time to put more effort into this. > I encourage the chairs or WG to bug me if they don't see anything about > this in a timeframe they expect. It would be easy to add length hiding (for all ciphers, STREAM, CBC, AEAD) to all of TLSv1.x -- simply by defining a compression algorithm that doesn't compress, but instead adds padding. Compression algorithms are allowed to inflate plaintext records up to a size of 2^14+1024 bytes. And if that (anti-)compression algorithm would add random padding on both ends of the plaintext, this could also frustrate attacks on CBC padding and RC4 bias... -Martin
- [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CCM: a… Michael Clark
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Tapio Sokura
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Michael Clark
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Jeffrey Walton
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Peter Gutmann
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Michael Clark
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Michael Clark
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Russ Housley
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Michael Clark
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Michael Clark
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Michael Clark
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Watson Ladd
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Michael Clark
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Ilari Liusvaara
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Yoav Nir
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Peter Gutmann
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Peter Gutmann
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Paterson, Kenny
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Peter Gutmann
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Michael Clark
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Manuel Pégourié-Gonnard
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Paterson, Kenny
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Watson Ladd
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Watson Ladd
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Paterson, Kenny
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Martin Thomson
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Michael Clark
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Martin Thomson
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Tom Ritter
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Martin Rex
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Joe Hall
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Tom Ritter
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Martin Thomson
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Nikos Mavrogiannopoulos
- Re: [TLS] AAED ciphers: AES-GCM vs AES-EAX/AES-CC… Tom Ritter