| 摘要 |
PROBLEM TO BE SOLVED: To hide information in a text itself by making the presence of hiding information hard to be detected, and prevented the hiding information from being influenced even if a sentence is corrected for hiding the information. SOLUTION: An input text A1 and the hiding information A2 are inputted to this information hiding restoring device 1. A compound noun included in the input text A1 is retrieved. The hiding information A2 is embedded in the input text A1 by substituting a front connecting noun of the final noun constituting the retrieved compound noun with a noun assigned with bit information of the same bit size as bit information corresponding to the front connecting noun among bit information for expressing the hiding information A2. |
