Saeed Sedghi Jeroen Doumen Pieter H. Hartel Willem Jonker Towards an Information Theoretic Analysis of Searchable Encryption. 345-360 2008 ICICS http://dx.doi.org/10.1007/978-3-540-88625-9_23 conf/icics/2008 db/conf/icics/icics2008.html#SedghiDHJ08