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From: Jeff Garzik <jgarzik@bitpay.com>
To: Mike Hearn <mike@plan99.net>
Cc: "bitcoin-development@lists.sourceforge.net"
	<bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] Miners MiTM
Date: Fri, 8 Aug 2014 14:21:18 -0400	[thread overview]
Message-ID: <CAJHLa0NBJo+NFFFZEHNo81KPBwgx05tbuMwtSKMs=07+wCmQgA@mail.gmail.com> (raw)
In-Reply-To: <CANEZrP00kRtNxtG9OVOmQLSTZ-MSHSuCe1PniM6v1pnhzz5Jog@mail.gmail.com>

gmaxwell noted on IRC that enabling TLS could be functionally, if not
literally, a DoS on the pool servers.  Hence the thought towards a
more lightweight method that simply prevents client payout redirection
+ server impersonation.


On Fri, Aug 8, 2014 at 5:53 AM, Mike Hearn <mike@plan99.net> wrote:
>> Certificate validation isn't needed unless the attacker can do a direct
>> MITM
>> at connection time, which is a lot harder to maintain than injecting a
>> client.reconnect.
>
>
> Surely the TCP connection will be reset once the route reconfiguration is
> completed, either by the MITM server or by the client TCP stack when it
> discovers the server doesn't know about the connection anymore?
>
> TLS without cert validation defeats the point, you can still be connected to
> a MITM at any point by anyone who can simply interrupt or corrupt the
> stream, forcing a reconnect.
>
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-- 
Jeff Garzik
Bitcoin core developer and open source evangelist
BitPay, Inc.      https://bitpay.com/



  reply	other threads:[~2014-08-08 18:21 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-07 23:02 [Bitcoin-development] Miners MiTM Pedro Worcel
2014-08-07 23:45 ` Luke Dashjr
2014-08-08  0:29   ` slush
2014-08-08  0:37     ` Christopher Franko
2014-08-08  1:07       ` Pedro Worcel
2014-08-08  2:22         ` slush
2014-08-08  1:01     ` Luke Dashjr
2014-08-08  9:53       ` Mike Hearn
2014-08-08 18:21         ` Jeff Garzik [this message]
2014-08-08 18:27           ` Luke Dashjr
2014-08-08 18:34           ` Laszlo Hanyecz
2014-08-09 12:15             ` Sergio Lerner
2014-08-08  3:18     ` Jeff Garzik
2014-08-08  9:42     ` Mike Hearn
2014-08-09 19:39       ` Troy Benjegerdes
2014-08-09 19:31   ` Troy Benjegerdes

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