The Attack on RSA with Small Private Key and Primes Sharing Least-Significant Bits
私钥p,q共享低位比特RSA体制的小指数攻击

In this paper,the security of RSA system is studied if the private keys p and q share their least significant bits.The result shows that RSA system is more vulnerable in this condition when the private key d is small.So it should be careful to void this kind of weak key.