| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To resolve a problem that it is difficult to leave a message a presenter desires to send together with a gift product under presentee's hand for long time preservation because a medium for sending the message has low durability comparing with the gift product. <P>SOLUTION: A product production method, product production system, and product for encrypting the message sent from the presenter to the presentee together with the product and sealing the encrypted message on the product are provided. The product production system includes a web server for the public, an arithmetic encryption unit, an issued encryption database, a dedicated web server, an archive database, and a sealing unit. The product production system has a message acquiring section for acquiring an original message sent by the presenter to the presentee together with the product, the arithmetic encryption unit for generating the arithmetic encryption by shortening the message which is an arithmetic object extracted from the original message with a Hash function, and a sealing control section for controlling sealing of the arithmetic encryption value on the product. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
