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Re: Facebook buying WhatsApp

From Marko Rauhamaa <marko@pacujo.net>
Newsgroups comp.misc
Subject Re: Facebook buying WhatsApp
Date 2014-02-20 09:20 +0200
Organization A noiseless patient Spider
Message-ID <874n3ufdxf.fsf@elektro.pacujo.net> (permalink)
References <vopfta-ips.ln1@7398004cd8ad880124144d3c685567d7.anonymous> <87txbumz6b.fsf@elektro.pacujo.net> <9aufta-qut.ln1@7398004cd8ad880124144d3c685567d7.anonymous>

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"q.kontinuum" <achsis_of_elvis@yahoo.co.uk>:

> On 2014-02-19, Marko Rauhamaa <marko@pacujo.net> wrote:
>> Encryption and authentication will be tricky. Hand-delivering public
>> keys won't scale so you will need a trusted external party. 
>
> [...] Theoretically there might be man in the middle attack [...] This
> is technically impossible.

"Impossible" is a big word.

>> I can't see a better long-term choice but the government.
>
> You mean the government handles the key exchange for us?! Definitely
> not my first choice.

Different schemes can be supported simultaneously, of course.

The Finnish Census Bureau has been issuing smart ID cards to citizens
for some years (although they haven't yet become popular). In the
scheme, the Finnish government certifies the peer's ID card is
physically present at the other end of the communication.

The prevalent identification method in Finland is through the banks. You
are asked to log on to your bank account and the bank certifies you have
access to the bank account. The scheme works very well, but is costly to
the service provider. In a P2P IM service, no party will want to pay for
authentication.


Marko

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Thread

Facebook buying WhatsApp "q.kontinuum" <achsis_of_elvis@yahoo.co.uk> - 2014-02-20 00:02 +0100
  Re: Facebook buying WhatsApp Marko Rauhamaa <marko@pacujo.net> - 2014-02-20 01:59 +0200
    Re: Facebook buying WhatsApp "q.kontinuum" <achsis_of_elvis@yahoo.co.uk> - 2014-02-20 01:19 +0100
      Re: Facebook buying WhatsApp Marko Rauhamaa <marko@pacujo.net> - 2014-02-20 09:20 +0200
        Re: Facebook buying WhatsApp "q.kontinuum" <achsis_of_elvis@yahoo.co.uk> - 2014-02-20 17:34 +0100
    Re: Facebook buying WhatsApp RS Wood <rsw@therandymon.com> - 2014-02-20 08:54 +0000
      Re: Facebook buying WhatsApp Marko Rauhamaa <marko@pacujo.net> - 2014-02-20 11:36 +0200
      Re: Facebook buying WhatsApp Spalls Hurgenson <spallshurgenson@gmail.com> - 2014-02-20 10:08 -0500
        Re: Facebook buying WhatsApp "tdk" <forum.tdk@squte.com> - 2014-02-20 10:38 +1038
          Re: Facebook buying WhatsApp Dave Garland <dave.garland@wizinfo.com> - 2014-02-20 11:36 -0600
            Re: Facebook buying WhatsApp "Andy K." <andy.k466@gmail.com> - 2014-02-21 00:02 +0100
  Re: Facebook buying WhatsApp RS Wood <rsw@therandymon.com> - 2014-02-20 07:17 +0000
    Re: Facebook buying WhatsApp Koen <koen.lefever@gmail.com> - 2014-02-20 15:38 +0000
    Re: Facebook buying WhatsApp "q.kontinuum" <achsis_of_elvis@yahoo.co.uk> - 2014-02-20 17:18 +0100
      Re: Facebook buying WhatsApp "q.kontinuum" <achsis_of_elvis@yahoo.co.uk> - 2014-02-21 17:17 +0100
  Re: Facebook buying WhatsApp Marek Novotny <mach2@hushmail.com> - 2014-02-20 10:09 -0600

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