Motivated by the importance of floating-point computations, we study the problem of securely and accurately summing many floating-point numbers. Prior work has focused on security absent accuracy or accuracy absent security, whereas our approach achieves both of them. Specifically, we show how to implement floating-point superaccumulators using secure multi-party computation techniques, so that a number of participants holding secret shares of floating-point numbers can accurately compute their sum while keeping the individual values private.
翻译:受浮点计算重要性的驱动,我们研究了安全且精确地求和大量浮点数的问题。以往的工作要么侧重于安全性而忽略精确性,要么侧重于精确性而忽略安全性,而我们的方法同时实现了这两者。具体而言,我们展示了如何利用安全多方计算技术实现浮点超级累加器,使得持有浮点数秘密分片的多个参与方能够在保持各数值私密的同时,精确地计算出它们的总和。