Re: [TLS] WG adoption + early code point assignment: draft-mavrogiannopoulos-chacha-tls
Eric Rescorla <ekr@rtfm.com> Wed, 20 May 2015 13:22 UTC
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From: Eric Rescorla <ekr@rtfm.com>
Date: Wed, 20 May 2015 06:21:25 -0700
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To: Nikos Mavrogiannopoulos <nmav@redhat.com>
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Cc: IETF TLS Working Group <tls@ietf.org>
Subject: Re: [TLS] WG adoption + early code point assignment: draft-mavrogiannopoulos-chacha-tls
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On Tue, May 19, 2015 at 11:43 PM, Nikos Mavrogiannopoulos <nmav@redhat.com> wrote: > ----- Original Message ----- > > I am in favor of this draft. > > > > Prior to doing the code point assignment, however, we should resolve > > the question of the per-record nonce algorithm. The current draft uses > > an algorithm that is not consistent either with the algorithm we use for > > GCM or TLS 1.3. > > > > - TLS 1.2 GCM: 32-bit fixed salt || 64-bit explicit per-record IV > > - TLS 1.3: fixed mask XORed with the record sequence number > > - ChaCha: 32-bit fixed salt || record sequence number > > I think the chacha draft is consistent with the TLS 1.2 GCM draft. The TLS > 1.2 GCM draft allows as an option (MAY) to have "32-bit fixed salt || > record sequence number", > and in fact all implementations do that. So this draft simply ratifies that > approach and changes that requirement to MUST. Not just that. It also doesn't carry the RSN on the wire, which the GCM one does. -Ekr The approach in TLS 1.3 is a novel > one and I don't think it suits this draft. > > regards, > Nikos >
- [TLS] WG adoption + early code point assignment: … Sean Turner
- Re: [TLS] WG adoption + early code point assignme… Yoav Nir
- Re: [TLS] WG adoption + early code point assignme… Martin Thomson
- Re: [TLS] WG adoption + early code point assignme… Eric Rescorla
- Re: [TLS] WG adoption + early code point assignme… Benjamin Beurdouche
- Re: [TLS] WG adoption + early code point assignme… Salz, Rich
- Re: [TLS] WG adoption + early code point assignme… Nikos Mavrogiannopoulos
- Re: [TLS] WG adoption + early code point assignme… Nikos Mavrogiannopoulos
- Re: [TLS] WG adoption + early code point assignme… Stephen Farrell
- Re: [TLS] WG adoption + early code point assignme… Yaron Sheffer
- Re: [TLS] WG adoption + early code point assignme… Nikos Mavrogiannopoulos
- Re: [TLS] WG adoption + early code point assignme… Yaron Sheffer
- Re: [TLS] WG adoption + early code point assignme… Yoav Nir
- Re: [TLS] WG adoption + early code point assignme… Eric Rescorla
- Re: [TLS] WG adoption + early code point assignme… Yoav Nir
- Re: [TLS] WG adoption + early code point assignme… Adam Langley
- Re: [TLS] WG adoption + early code point assignme… Eric Rescorla
- Re: [TLS] WG adoption + early code point assignme… Adam Langley
- Re: [TLS] WG adoption + early code point assignme… Eric Rescorla
- Re: [TLS] WG adoption + early code point assignme… Nikos Mavrogiannopoulos
- Re: [TLS] WG adoption + early code point assignme… Eric Rescorla
- Re: [TLS] WG adoption + early code point assignme… Adam Langley
- Re: [TLS] WG adoption + early code point assignme… Salz, Rich
- Re: [TLS] WG adoption + early code point assignme… Eric Rescorla
- Re: [TLS] WG adoption + early code point assignme… Eric Rescorla
- Re: [TLS] WG adoption + early code point assignme… Yoav Nir
- Re: [TLS] WG adoption + early code point assignme… Martin Thomson
- Re: [TLS] WG adoption + early code point assignme… Yoav Nir
- Re: [TLS] WG adoption + early code point assignme… Martin Thomson
- Re: [TLS] WG adoption + early code point assignme… Yoav Nir
- Re: [TLS] WG adoption + early code point assignme… Ilari Liusvaara
- Re: [TLS] WG adoption + early code point assignme… Ilari Liusvaara
- Re: [TLS] WG adoption + early code point assignme… Yoav Nir
- Re: [TLS] WG adoption + early code point assignme… Tony Arcieri
- Re: [TLS] WG adoption + early code point assignme… Hubert Kario