| 摘要 |
<p>One embodiment provides a system that has an information terminal that stores information (Pa) for (A) and information (Pb') for (B), an information terminal or a server (Z) for (B) that stores information (Pa') for (A) and information (Pb) for (B), and a server (X). The server (X) receives arbitrary calculations G(Pa) and G(Pb') from the information terminal for (A), generates a calculation result F(G(Pa), G(Pb')), associates the same with an identification tag (Xa) of a user (A), and registers the result in the server (X). Next, the server (X) receives arbitrary calculations G(Pb) and G(Pa') from the information terminal or the server (Z) for (B), creates from this a calculation result F(G(Pa'), G(Pb)) by means of an arbitrary calculation F, and uses said result as a search key to search the server (X). As the search result, (Xa) associated with F(G(Pa), G(Pb') is obtained and is transmitted to the server (Z) or the information terminal of a user (B).</p> |
