On Wed, Nov 15, 2006 at 12:14:38AM +0800, RMS wrote: > Dear all > > I like to ask what is the encryption level for Tor? I cannot find it > despite searching. Is it better than Gmail's AES-256 256bit? You can find full details about Tor's protocol at http://tor.eff.org/svn/trunk/doc/tor-spec.txt Tor uses 1024-bit RSA, 1024-bit Diffie-Hellman, 128-bit AES in counter mode, and SHA1. We also sometimes use 3DES if your version of OpenSSL is very old. Then again, if you are worried about an hypothetical attacker who can break AES-128 but can't break AES-256, such an attacker probably has resources to mount attacks against Tor that are far easier. hth, -- Nick Mathewson
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