Yong Ki Lee Herwin Chan Ingrid Verbauwhede Throughput Optimized SHA-1 Architecture Using Unfolding Transformation. 354-359 2006 conf/asap/2006 ASAP http://doi.ieeecomputersociety.org/10.1109/ASAP.2006.68 db/conf/asap/asap2006.html#LeeCV06