Ron Steinfeld Yuliang Zheng On the Security of RSA with Primes Sharing Least-Significant Bits. 179-200 2004 15 Appl. Algebra Eng. Commun. Comput. 3-4 http://www.springerlink.com/index/10.1007/s00200-004-0164-6 db/journals/aaecc/aaecc15.html#SteinfeldZ04