Re: [apps-discuss] HTTP MAC Authentication Scheme
Eran Hammer-Lahav <eran@hueniverse.com> Thu, 02 June 2011 15:58 UTC
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From: Eran Hammer-Lahav <eran@hueniverse.com>
To: Mark Nottingham <mnot@mnot.net>
Date: Thu, 02 Jun 2011 08:44:35 -0700
Thread-Topic: [apps-discuss] HTTP MAC Authentication Scheme
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Cc: "apps-discuss@ietf.org" <apps-discuss@ietf.org>, Ben Adida <ben@adida.net>, "'Adam Barth (adam@adambarth.com)'" <adam@adambarth.com>, "http-state@ietf.org" <http-state@ietf.org>, HTTP Working Group <ietf-http-wg@w3.org>, OAuth WG <oauth@ietf.org>
Subject: Re: [apps-discuss] HTTP MAC Authentication Scheme
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> -----Original Message----- > From: Mark Nottingham [mailto:mnot@mnot.net] > Sent: Wednesday, June 01, 2011 5:16 PM > To: Eran Hammer-Lahav > Cc: apps-discuss@ietf.org; Ben Adida; http-state@ietf.org; OAuth WG; > 'Adam Barth (adam@adambarth.com)'; HTTP Working Group > Subject: Re: [apps-discuss] HTTP MAC Authentication Scheme > > > On 02/06/2011, at 1:00 AM, Eran Hammer-Lahav wrote: > > > This was suggested before, but are there really attack vectors for this? > > If not having a current, working attack to demonstrate is a valid way to shrug > off a security concern, that's great; it'll be a useful approach to many of the > discussions I have. :) No, but its valid as long as it is fully documented. We're not going to solve everything. > > The problem is that content-type is a pretty flexible header, which means > normalization of the header will be required (case, parameter order, white > space, etc.). > > The media type is the important part, and it's much more constrained. So include just the: type "/" subtype forced to lowercase? > > > I would argue that if you are using MAC with body hash and an attacker > changing the media type can cause harm, you should use additional methods > to secure the content-type (such as making the body self-describing). > > > That seems like a step backwards, considering all of the work that Adam has > put into limiting the use of sniffing. I wasn't suggesting sniffing. EHL > Cheers, > > -- > Mark Nottingham http://www.mnot.net/ > >
- [apps-discuss] HTTP MAC Authentication Scheme Eran Hammer-Lahav
- Re: [apps-discuss] [saag] Fwd: HTTP MAC Authentic… Nico Williams
- Re: [apps-discuss] [saag] Fwd: HTTP MAC Authentic… Eran Hammer-Lahav
- Re: [apps-discuss] HTTP MAC Authentication Scheme Chris Bentzel
- Re: [apps-discuss] HTTP MAC Authentication Scheme Eran Hammer-Lahav
- Re: [apps-discuss] HTTP MAC Authentication Scheme Chris Bentzel
- Re: [apps-discuss] [saag] Fwd: HTTP MAC Authentic… Nico Williams
- Re: [apps-discuss] [saag] Fwd: HTTP MAC Authentic… Eran Hammer-Lahav
- Re: [apps-discuss] [saag] Fwd: HTTP MAC Authentic… Nico Williams
- Re: [apps-discuss] HTTP MAC Authentication Scheme Nico Williams
- Re: [apps-discuss] HTTP MAC Authentication Scheme Eran Hammer-Lahav
- Re: [apps-discuss] HTTP MAC Authentication Scheme Nico Williams
- Re: [apps-discuss] HTTP MAC Authentication Scheme Mark Nottingham
- Re: [apps-discuss] HTTP MAC Authentication Scheme Stephen Farrell
- Re: [apps-discuss] HTTP MAC Authentication Scheme Eran Hammer-Lahav
- Re: [apps-discuss] HTTP MAC Authentication Scheme Mark Nottingham
- Re: [apps-discuss] HTTP MAC Authentication Scheme Adam Barth
- Re: [apps-discuss] HTTP MAC Authentication Scheme Eran Hammer-Lahav
- Re: [apps-discuss] HTTP MAC Authentication Scheme Dzonatas Sol
- Re: [apps-discuss] HTTP MAC Authentication Scheme Dave CROCKER
- Re: [apps-discuss] [http-state] HTTP MAC Authenti… Adam Barth
- Re: [apps-discuss] HTTP MAC Authentication Scheme Mark Nottingham
- Re: [apps-discuss] HTTP MAC Authentication Scheme Stephen Farrell
- Re: [apps-discuss] [http-state] HTTP MAC Authenti… Paul E. Jones
- Re: [apps-discuss] [http-state] HTTP MAC Authenti… Nico Williams
- Re: [apps-discuss] [http-state] HTTP MAC Authenti… Nico Williams
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… Nico Williams
- Re: [apps-discuss] [http-state] HTTP MAC Authenti… Adam Barth
- Re: [apps-discuss] [http-state] HTTP MAC Authenti… Paul E. Jones
- Re: [apps-discuss] [http-state] HTTP MAC Authenti… Nico Williams
- Re: [apps-discuss] [http-state] HTTP MAC Authenti… Nico Williams
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… Nico Williams
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… Nico Williams
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… Nico Williams
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… Nico Williams
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… Nico Williams
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… Mark Nottingham
- Re: [apps-discuss] [http-state] HTTP MAC Authenti… Paul E. Jones
- Re: [apps-discuss] [http-state] HTTP MAC Authenti… Nico Williams
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… William J. Mills
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… Tim
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… Randy Fischer
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… Igor Faynberg
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… William J. Mills
- Re: [apps-discuss] [http-state] HTTP MAC Authenti… Tim
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… Dzonatas Sol
- Re: [apps-discuss] [http-state] HTTP MAC Authenti… Eran Hammer-Lahav
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… Breno de Medeiros
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… Nico Williams
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… Bjartur Thorlacius
- Re: [apps-discuss] [http-state] HTTP MAC Authenti… Paul E. Jones
- Re: [apps-discuss] [http-state] HTTP MAC Authenti… Paul E. Jones
- Re: [apps-discuss] [http-state] HTTP MAC Authenti… Tim
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… Tim
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… Robert Sayre
- Re: [apps-discuss] [http-state] HTTP MAC Authenti… Nico Williams
- Re: [apps-discuss] [http-state] HTTP MAC Authenti… Paul E. Jones
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… Eran Hammer-Lahav
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… Tim
- Re: [apps-discuss] [OAUTH-WG] [http-state] HTTP M… Bjartur Thorlacius