Elisabeth Oswald Stefan Mangard Christoph Herbst Stefan Tillich Practical Second-Order DPA Attacks for Masked Smart Card Implementations of Block Ciphers. 192-207 2006 conf/ctrsa/2006 CT-RSA http://dx.doi.org/10.1007/11605805_13 db/conf/ctrsa/ctrsa2006.html#OswaldMHT06