@article{oai:ipsj.ixsq.nii.ac.jp:00191456, author = {木下, 盾 and 上原, 哲太郎 and Jun, Kinoshita and Tetsutaro, Uehara}, issue = {9}, journal = {情報処理学会論文誌}, month = {Sep}, note = {多くの企業が扱う顧客個人情報は事業活動のためには不可欠のものだが,同時に安全管理の責任が求められる.そのため,利活用できる状態でいかに漏洩を防止するかが課題である.特に内部不正による漏洩は,防止や検知が困難である.そこで,対策として従業員ごとにパターンを変えて名簿へダミー個人情報を埋め込む手法がある.しかし,これは結託攻撃によるダミー個人情報の除去が考えられるため,結託耐性符号の利用が必要である.また,名簿は分割される可能性が高く,分割によって結託耐性符号が除去されることも考えられる.本研究では,結託耐性符号を用いた名簿システムとその分割攻撃への対応手法を提案する., Many of the business firms are utilizing the customer personal information for their business activities. At the same time, they are responsible to prevent leakage. It is a big issue for them to utilize the personal information keeping the safety to prevent the leakage. In particular, it is difficult to prevent ant detect the leakage due to internal fraud. Therefore, there is a method of embedding the dummy personal information to the roster by changing the pattern for each employee as a countermeasure. However, because of the threat of the removal of the dummy personal information by collusion attacks, it is necessary to use a collusion resistant code. Moreover, the customer list is likely to be divided into pieces, it is conceivable to collusion resistance code is removed by the division. In this paper, we propose a countermeasure as the list system using collusion code to the splitting attacks.}, pages = {1570--1580}, title = {結託耐性符号を用いた名簿システムの分割攻撃への対応}, volume = {59}, year = {2018} }