Praveen Gauravaram Katsuyuki Okeya Side Channel Analysis of Some Hash Based MACs: A Response to SHA-3 Requirements. 111-127 2008 ICICS http://dx.doi.org/10.1007/978-3-540-88625-9_8 conf/icics/2008 db/conf/icics/icics2008.html#GauravaramO08