[Colloq] Sanjit Chatterjee, Friday, April 28

[Rachel Kalweit]

College of Computer and Information Science Colloquium

Presents a talk by:
Sanjit Chatterjee
Indian Statistical Institute, Kolkata


Who will speak on:
"Generalization of the Selective-ID Security Model for HIBE Protocols"


Friday, April 28, 2006
12:00pm
366 West Village H
Northeastern University


Abstract:
We generalize the selective-ID security model for HIBE by introducing 
two new security models. Both these models allow the adversary to commit 
to a set of identities and in the challenge phase choose any one of the 
previously committed identities. Two constructions of HIBE are presented 
which are secure in the two models. One of the HIBE constructions 
supports an unbounded number of levels, i.e., the maximum number of 
levels does not need to be specified during the set-up. Further, we show 
that this HIBE can be modified to obtain a multiple receiver IBE which 
is secure in the selective-ID model without the random oracle assumption.

Host: Ravi Sundaram