Takaaki Mizuki Yoshinori Kugimoto Hideaki Sone Secure Multiparty Computations Using the 15 Puzzle. 255-266 2007 conf/cocoa/2007 COCOA http://dx.doi.org/10.1007/978-3-540-73556-4_28 db/conf/cocoa/cocoa2007.html#MizukiKS07