| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method performing collection in a form of easy-to-obtain agreement about personal information provision, in statistical processing for obtaining statistical information including personal information from a plurality of terminals holding the personal information and connected to a network. <P>SOLUTION: When making a statistical processing agent patrol among the terminals to make the statistical processing agent collect the personal information held by the terminals, a part of the statistical processing is performed inside the terminal, the terminal selects the next agent transmission destination, the statistical information is encrypted such that only the transmission destination terminal can decrypt it, and the patrol is made to be performed. Thereby, a statistical processing requester requesting the statistical processing, a key management device managing the encrypted information, and the terminal operating the actual statistical information are separated, set information comprising a large number of pieces of personal information or only the statistical information is provided to the statistical processing requester without opening the personal information. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
