[asterisk-users] FW: [newtech-1] Uncovering Spoken Phrases in Encrypted Voice over IP Conversations

[Dean Collins]

Thought this might interest a few people on the asterisk list as well 

 

 

Cheers,

Dean

 

 

________________________________

From: Dean Collins 
Sent: Tuesday, March 15, 2011 1:49 PM
To: 'newtech-1 at meetup.com'
Subject: RE: [newtech-1] Uncovering Spoken Phrases in Encrypted Voice
over IP Conversations

 

Wow, of course how stupid, when someone says hello at the start of the
call it probably establishes a baseline to work from.

 

It would make sense to start calls with a pass saying like "elephant" or
some other nonsense that would throw off the reverse hacking.

 

Nice find Victor. 

 

 

Cheers,

Dean

 

 

________________________________

From: newtech-1 at meetup.com [mailto:newtech-1 at meetup.com] On Behalf Of
Victor Shamanovsky
Sent: Tuesday, March 15, 2011 1:17 PM
To: newtech-1 at meetup.com
Subject: [newtech-1] Uncovering Spoken Phrases in Encrypted Voice over
IP Conversations

 

http://portal.acm.org/citation.cfm?doid=1880022.1880029

 

"Our results indicate that we can identify phrases within encrypted
calls with an average accuracy of 50% and with accuracy greater than 90%
for some phrases."


-- 
Thanks,

http://shamanovsky.com

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