[1306] in Privacy_Forum
[ PRIVACY Forum ] Uncovering spoken phrases in *encrypted* VoIP
daemon@ATHENA.MIT.EDU (privacy@vortex.com)
Tue Mar 15 13:55:45 2011
Date: Tue, 15 Mar 2011 10:27:37 -0700
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Uncovering spoken phrases in *encrypted* VoIP conversations
http://j.mp/gLgRfD (Johns Hopkins / UNC)
We evaluate our techniques on a standard speech recognition corpus
containing over 2,000 phonetically rich phrases spoken by 630
distinct speakers from across the continental United States. 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. Clearly, such an attack calls into question the
efficacy of current VoIP encryption standards.
--Lauren--
Lauren Weinstein (lauren@vortex.com): http://www.vortex.com/lauren
Co-Founder: People For Internet Responsibility: http://www.pfir.org
Founder:
- Network Neutrality Squad: http://www.nnsquad.org
- Global Coalition for Transparent Internet Performance: http://www.gctip.org
- PRIVACY Forum: http://www.vortex.com
Member: ACM Committee on Computers and Public Policy
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Tel: +1 (818) 225-2800 / Skype: vortex.com
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