Andrey Sidorenko Joachim van den Berg Remko Foekema Michiel Grashuis Jaap de Vos Bellcore attack in practice. 553 2012 2012 IACR Cryptol. ePrint Arch. http://eprint.iacr.org/2012/553 db/journals/iacr/iacr2012.html#SidorenkoBFGV12