| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a character string conversion device including a mask processing means masking a character string corresponding to personal information, in which restoration to an original character string can be performed based on a character string after conversion while reducing the leakage risk of personal information. <P>SOLUTION: The character conversion device stores a plurality of programs 31-35 as conversion processing means and a plurality of tables 36-38 as conversion character lists in a program memory 30. In the conversion device, it is determined whether a character contained in a designated mask range is matched to a character contained in each table or not, and when the both are matched, this character is converted to another character in the corresponding table according to a preliminarily defined conversion rule. As restoration processing, each converted character string is restored to a character string before conversion according to the conversion rule. <P>COPYRIGHT: (C)2007,JPO&INPIT |
