| 摘要 |
<p>A third secure computing device generates data Wb corresponding to the bits b of a fragment t satisfying mA=s*t with respect to a first input value mA and an operator * and data W(1-b) corresponding to the inverted bits (1-b) of the bits b, transmits the data Wb to a first secure computing device, and transmits the data Wb and data W including data W(1-b) to a second secure computing device. The second secure computing device creates data T which includes a concealed logical circuit function f(s*X) defined by embedding a fragment s in a logical circuit function f and which enables production of a computation result f(mA) from the data T itself and the data Wb. The created data T is transmitted to the first secure computing device. The first secure computing device computes the computation result f(mA) from the data T and data Wb.</p> |
