Xia Hong Ning Hui-ming Yan Jiang-yu The Realization and Optimization of Secure Hash Algorithm (SHA-1) Based on LEON2 Coprocessor. 853-858 2008 CSSE (3) http://dx.doi.org/10.1109/CSSE.2008.358 conf/csse/2008-3 db/conf/csse/csse2008-3.html#HongHJ08