Judicaël Courant Cristian Ene Yassine Lakhnech Computationally Sound Typing for Non-interference: The Case of Deterministic Encryption. 364-375 2007 conf/fsttcs/2007 FSTTCS http://dx.doi.org/10.1007/978-3-540-77050-3_30 db/conf/fsttcs/fsttcs2007.html#CourantEL07