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SUMMARY:Authentication protocols based on human interaction in security pe
 rvasive computing - Nguyen Hoang Long\, Oxford University Computing Labora
 tory
DTSTART:20071113T161500Z
DTEND:20071113T171500Z
UID:TALK8158@talks.cam.ac.uk
CONTACT:Saar Drimer
DESCRIPTION:A big challenge in pervasive computing is to establish secure 
 communication over the Dolev-Yao network without a PKI. An approach studie
 d by researchers is to build security though human work creating a low-ban
 dwidth empirical channel (physical contact\, human conversation) where the
  transmitted information is\nauthentic and cannot be faked /modified. In t
 his talk\, we give a brief survey of authentication protocols of this type
  as well as concentrating on our contribution which is group-protocol.\n\n
 We start with non-interactive schemes\, for example: the one proposed by G
 ehrmann\, Mitchell and Nyberg\, and point out that it does not optimise th
 e human work\, and then present our improved version of the scheme. We the
 n move on to analyse strategies used to build interactive pair-wise and gr
 oup protocols that minimise the human work relative to the amount of secur
 ity\nobtained. Many of the protocols are based on the human comparison of 
 a single short string.\n\nSpeaker's website:\nhttp://web.comlab.ox.ac.uk/o
 ucl/work/long.nguyen/\n
LOCATION:Lecture Theatre 2\, Computer Laboratory\, William Gates Building
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