IACR News item: 01 December 2013
Jie Chen, Hoeteck Wee
ePrint Report
We present the first fully secure Identity-Based Encryption scheme
(IBE) from the standard assumptions where the security loss depends
only on the security parameter and is independent of the number of
secret key queries. This partially answers an open problem posed by
Waters (Eurocrypt 2005). Our construction combines Waters\' dual
system encryption methodology (Crypto 2009) with the Naor-Reingold
pseudo-random function (J. ACM, 2004) in a novel way. The security
of our scheme relies on the DLIN assumption in prime-order groups.
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