| 摘要 |
PROBLEM TO BE SOLVED: To confirm whether data can be generated by disturbance different for every seal or not even when the copy of illegal data is generated based on terminal side data by adding the disturbance to data peculiar for a client and receiving the data of its result at the terminal of a distributor. SOLUTION: When performing electronic sealing processing, user data (such as multigradation data of seal impression, for example) are sent from a data storage part 11 through a signal line S1-12 to a data update part 12. At a data output part 13, on the other hand, parameter information (such as date and time, for example) provided from an external terminal 2 is provided, through a signal line S12-1. This date information is fetched through the signal line S1-12 into the update part 12, and the update part 12 converts the user data by adding the disturbance through any prescribed method with the date information as a parameter and sends the data of the result through a signal line S1-23 to the data output part 13. At the terminal 2, the data are received by a data input part 21, preserved in a data storage part 23, visualized for confirmation and displayed on a display part as the image of seal impression. |
