| 摘要 |
<p>Disclosed is an information processing device for de-identifying identity information so as to ensure that at least a predetermined number of corresponding people for the identity information after de-identification exist. The disclosed information processing device includes an identity information database for storing a plurality of units of identity information; an algorithm definition unit for associating a plurality of types of algorithms, which define processing content which obfuscates the described content of each unit of identity information, with algorithm discrimination information and storing thereof; a described content modification unit for modifying the described content of each unit of identity information in accordance with an algorithm corresponding to the predetermined algorithm discrimination information; a calculation unit for provider quantity by described content for calculating, for each described content after modification, the provider quantity of identity information to be modified into the described content after modification; and a comparison unit for comparing the minimum value among each of the provider quantities with a predetermined reference value; wherein the described content modification unit repeats processing for modifying the described content of each unit of identity information which is stored in the identity information database with an algorithm corresponding to each unit of algorithm discrimination information until the minimum value becomes greater than or equal to the reference value.</p> |
