00290nas a2200109   4500000000100000000000100001008004100002260003900043100002000082700002000102245005800122       2010                            d  c18-20 Aug. 2010 aYamagata, Japan 1 aJohannes Heurix1 aThomas Neubauer00aOn the Security of Outsourced and Untrusted Databases