| 摘要 |
PURPOSE:To attain the secrecy of function by securing a common functional equation for both upper and lower data processings, comparing the arithmetic results of random number data between both processings and opening the own function only when the coincidence is obtained from said comparison. CONSTITUTION:In case the privacy is needed for a function D among those functions A-D of a slave station 1, the station 1 transmits the data (x) which is delivered and not prescribed by a random number generating means set within the station 1 to a master station 2. The station 2 supplies the received data (x) to a functional equation y=f(x) of its own to obtain (y). The station 2 sends the (y) back to the station 1. The station 1 supplies the received (y) and the data (x) sent to the station 2 to obtain (y'). If y=y' is obtained from a comparison, the function D is opened. While the function D is not opened in the case of ynot equal to y'. |
