[Chapter-delegates] Proposed law to ban Skype in Russia?
Marcin Cieslak
saper at saper.info
Wed Aug 19 02:27:22 PDT 2009
Narelle.Clark at csiro.au wrote:
> The principle runs to the essential features of what the Internet
> comprises. How it works.
>
> [Unfortunately right now I can't find that particular RFC - STD1/RFC
> 1600 isn't helping(!), so I would appreciate someone else pointing it
> out. Also, if these definitions aren't as clear as my memory recalls,
> then they darn well should be, and we should be doing something about
> that!]
Whenever I am in doubt what the Internet is, my primary reference is
Fred Baker :)
When he is not available, I usually check
RFC 1122 (Requirements for Internet Hosts -- Communication Layers)
RFC 1123 (Requirements for Internet Hosts -- Application and Support)
RFC 1812 (Requirements for IP Version 4 Routers)
Those documents actually refer to further standards their clarify (like
basic IP and TCP RFCs).
But those protocol do not say how much a crippled Internet connectivity
can be still to be called "the Internet". They describe the issue from
the point of view of universal IP-level reachability.
> There is no technical impediment to legal intercept.
>
> While IP intercept isn't quite that
> simple, the technical processes on common IP network equipment are
> not challenging.
Unless the government has a better-than-known-state-of-the-art
cryptography, deciphering Skype traffic can be a challenge. You can
collect all the packets but there is little you can do to get an actual
voice payload.
There are mechanisms like Perfect Forward Secrecy (although I am not
sure if employed by Skype, it is certainly used with many SSL
connections today) one cannot even decrypt communication that has been
captured at some point of time. and private keys used to secure the
transmission have been recovered later (e.g. when authorities seize the
computer).
--
<< Marcin Cieslak // saper at saper.info >>
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