Ricardo Chaves Georgi Kuzmanov Leonel Sousa Stamatis Vassiliadis Cost-Efficient SHA Hardware Accelerators. 999-1008 2008 16 IEEE Trans. VLSI Syst. 8 http://dx.doi.org/10.1109/TVLSI.2008.2000450 db/journals/tvlsi/tvlsi16.html#ChavesKSV08