[Cryptography] Fwd: NYTimes.com: N.S.A. Foils Much Internet Encryption

james hughes hughejp at mac.com
Fri Sep 6 01:11:40 EDT 2013


The following is from a similar list in Europe. Think this echoes much on this list but has an interesting twist about PFS cipher suites.

Begin forwarded message:
> ________________________________________
> From: Paterson, Kenny [Kenny.Paterson at rhul.ac.uk]
> Sent: Friday, September 06, 2013 12:03 AM
> To: Christof Paar; ecrypt2-all at esat.kuleuven.be
> Subject: Re: NYTimes.com: N.S.A. Foils Much Internet Encryption
> 
> Christof,
> 
> Thanks for sharing this link.
> 
> What seems likely, reading between the lines of this article, is that
> NSA/GCHQ have access, by a variety of means, to RSA private keys for
> popular websites, enabling them to (at will) recover SSL/TLS session keys.
> This can be done offline for stored traffic or online as packets pass by
> on the network. I stress that the article does not say this directly.
> 
> One solution, preventing passive attacks, is for major browsers and
> websites to switch to using PFS ciphersuites (i.e. those based on
> ephemeral Diffie-Hellmann key exchange). For statistics on current
> adoption of such ciphersuites, see:
> 
> http://news.netcraft.com/archives/2013/06/25/ssl-intercepted-today-decrypte
> d-tomorrow.html
> 
> 
> Regards
> 
> Kenny

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