| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a management device, method and program, which easily verifies that communication data communicated among a plurality of computers through the Internet or the like is completely legally admissible. <P>SOLUTION: The management device includes: a communication data obtaining means for capturing and obtaining communication data forming a communication file that is sent from a client device to an external computer via a network; a hash value calculating means for calculating using a hash function a hash value from the communication data obtained by the communication data obtaining means; and a capture data storage means for storing in association the communication data obtained by the communication data obtaining means and the hash value calculated by the hash value calculating means, while imparting a correct time stamp. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
