Phillip Rogaway Efficient Instantiations of Tweakable Blockciphers and Refinements to Modes OCB and PMAC. 16-31 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3329&spage=16 2004 conf/asiacrypt/2004 ASIACRYPT db/conf/asiacrypt/asiacrypt2004.html#Rogaway04