<論文>自己情報記録・公開アプリ開発の展望 --公開鍵暗号法を用いた一方向特定加工情報の提案--

Abstract

Twkel, a smartphone application software which is currently under development, enables us to memorize the structural data of our daily activities such as body temperatures, weights, and so on. Twkel is also designed to transfer personal data through the Internet. This is because the collected personal data of so many people may help produce some important knowledge, for example, in terms of our health, even though we don't understand the value of their personal data. This kind of data trading system is not constructed yet, because the Personal Data Protection Law prohibits free transportation of the personal data without the permission from its sender. In this paper, we will introduce the data mining project where the data had not been originally intended to be used for that purpose, to show the potential of our data accumulation application software Twkel. In addition to this, we propose the One Way Detectably Modified Personal Information model to be added to the Personal Data Protection Law. One Way Detectably Modified Personal Information can show whether the sender has the same private key of the original sender without identifying who the original sender really is, using the public key cryptography. In this information model, information can identify the sender by itself, so the data can be merged or deleted on the command from the sender. This helps to produce the effective use of the personal data while keeping the personal information confidential.