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From: Sage Weil <sage@newdream.net>
To: Marcus Watts <mwatts@redhat.com>
Cc: Haomai Wang <haomai@xsky.com>,
	"ceph-devel@vger.kernel.org" <ceph-devel@vger.kernel.org>
Subject: Re: msgr2 protocol
Date: Fri, 27 May 2016 13:33:12 -0400 (EDT)	[thread overview]
Message-ID: <alpine.DEB.2.11.1605271330580.4873@cpach.fuggernut.com> (raw)
In-Reply-To: <20160527082833.GB24096@degu.eng.arb.redhat.com>

On Fri, 27 May 2016, Marcus Watts wrote:
> Of course you still need to somehow protect against a "downgrade" MITM 
> attack.

How is this generally done?  I'm thinking about, for example, a MITM who 
silently drops the TAG_ENCRYPT message in the protocol I described.  It 
seems like we need a secure TAG_AUTH_something that makes a statement 
about what has been negotiated before we start the message exchange or 
else some part of the initial exchange could have been dropped.

?

sage

  reply	other threads:[~2016-05-27 17:32 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-26 18:17 msgr2 protocol Sage Weil
2016-05-27  4:41 ` Haomai Wang
2016-05-27  4:45   ` Haomai Wang
2016-05-27  8:28   ` Marcus Watts
2016-05-27 17:33     ` Sage Weil [this message]
2016-05-27 17:28   ` Sage Weil
2016-05-27  9:44 ` Yehuda Sadeh-Weinraub
2016-05-27 17:37   ` Sage Weil
2016-05-28 18:19     ` Yehuda Sadeh-Weinraub
2016-06-02 15:43       ` Sage Weil
2016-06-02 15:59         ` Haomai Wang
2016-06-02 16:35           ` Sage Weil
2016-06-02 18:11 ` Gregory Farnum
2016-06-02 18:24   ` Sage Weil
2016-06-02 18:34     ` Gregory Farnum
2016-06-03 13:11       ` Sage Weil
2016-06-03 13:24       ` Sage Weil
2016-06-03 16:47         ` Haomai Wang
2016-06-03 17:33           ` Sage Weil
2016-06-03 17:35             ` Haomai Wang
2016-06-06  8:23               ` Junwang Zhao
2016-06-10  8:31                 ` Marcus Watts
2016-06-10 10:11                   ` Sage Weil
2016-06-10 10:48                   ` Sage Weil
2016-06-06 20:16             ` Gregory Farnum
2016-06-10 11:04               ` Sage Weil
2016-06-10 19:05                 ` Marcus Watts
2016-06-10 21:15                   ` Sage Weil
2016-06-10 21:22                     ` Gregory Farnum
2016-06-11 23:05                     ` Marcus Watts
2016-06-12 23:59                       ` Sage Weil
     [not found]                         ` <CACJqLyax_SXEZp3vA2_wR+CdwKOo2Re=SsK2xfXqmXjz9d8iNw@mail.gmail.com>
2016-09-09 21:14                           ` Sage Weil
     [not found]                             ` <CACJqLyYwKZ5_1OHR_5=+mr=1ED2Nt34x4TB29j5dE1D+NjzFpg@mail.gmail.com>
2016-09-10 14:43                               ` Haomai Wang
2016-09-11 17:05                                 ` Sage Weil
2016-09-12  2:29                                   ` Haomai Wang
2016-09-12 13:21                                     ` Sage Weil
2016-09-13  0:03                                       ` Gregory Farnum
2016-09-13  1:35                                         ` Haomai Wang
2016-09-13 13:21                                           ` Sage Weil
2016-09-13 11:50                                       ` Jeff Layton
2016-09-13 11:18                                   ` Jeff Layton
2016-09-13 13:31                                     ` Sage Weil
2016-09-13 14:48                                       ` Jeff Layton
2016-09-13 15:10                                         ` Sage Weil
2016-09-13 20:07                                           ` Gregory Farnum
2016-06-02 18:16 ` Gregory Farnum
2016-06-29 11:59 Avner Ben Hanoch
2016-06-29 16:52 ` Yehuda Sadeh-Weinraub
2016-06-30 11:59   ` Avner Ben Hanoch

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