Martin Feldhofer Johannes Wolkerstorfer Strong Crypto for RFID Tags - A Comparison of Low-Power Hardware Implementations. 1839-1842 2007 conf/iscas/2007 ISCAS http://doi.ieeecomputersociety.org/10.1109/ISCAS.2007.378272 db/conf/iscas/iscas2007.html#FeldhoferW07