Yaron,
I don't think these attacks are relevant to ESP compression.
As far as I understand, they rely on statistical analysis of the frame lengthes when phonems are encoded with a lossy compression algorithm. I don't see how it affects losless compression used in ESP.

Regards,
Valery.


Valery, here's what I could find:

* https://www.cs.jhu.edu/~cwright/oakland08.pdf
* http://www.techeye.net/security/skypes-encryption-destroyed-by-phonemes

And another attack was published recently, but I cannot find it.

So this is for voice, and the better known TLS attack are for HTTP.






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