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SUMMARY:Discussion: Bi-directional authentication in TLS - Steven J. Murdo
 ch (Computer Laboratory\, University of Cambridge)
DTSTART:20071019T150000Z
DTEND:20071019T153000Z
UID:TALK8802@talks.cam.ac.uk
CONTACT:Steven J. Murdoch
DESCRIPTION:I am working on designing a new authentication algorithm for "
 Tor":http://www.torproject.org/\, which maintains the bi-directional authe
 ntication and confidentiality guarantees\, but looks similar to normal enc
 rypted web-browsing. This is to help resist blocking based on Tor's traffi
 c fingerprint.\n\nTor needs to now perform a HTTPS-like TLS handshake\, wh
 ere the client authenticates the server\, but not vice-versa. Then\, withi
 n the encrypted tunnel\, the server needs to authenticate the client. Two 
 additional constraints are that it needs to work with unmodified\nOpenSSL 
 and have minimum overhead.\n\nI'll be discussing some proposals for an imp
 roved protocol\, and expand on the design constraints. I welcome comments 
 on these ideas\, potential flaws and any suggested improvements.
LOCATION:Computer Laboratory\, William Gates Building\, Room FW11
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