Babak Sadeghiyan Josef Pieprzyk On Necessary and Sufficient Conditions for the Construction of Super Pseudorandom Permutations. 194-209 1991 conf/asiacrypt/1991 ASIACRYPT db/conf/asiacrypt/asiacrypt91.html#SadeghiyanP91 http://dx.doi.org/10.1007/3-540-57332-1_16