Anand Desai Sara K. Miner Concrete Security Characterizations of PRFs and PRPs: Reductions and Applications. 503-516 2000 conf/asiacrypt/2000 ASIACRYPT http://link.springer.de/link/service/series/0558/bibs/1976/19760503.htm db/conf/asiacrypt/asiacrypt2000.html#DesaiM00