@article{oai:ipsj.ixsq.nii.ac.jp:00009451,
 author = {高塚, 光幸 and 多田, 真祟 and 佐々木, 良一 and Mitsuyuki, Takatsuka and Masataka, Tada and Ryoichi, Sasaki},
 issue = {9},
 journal = {情報処理学会論文誌},
 month = {Sep},
 note = {近年，デジタル・フォレンジック技術において証拠の電子開示手続きであるe-Discovery技術が重要になってきている．開示する文書の中には，機密情報やプライバシ情報などが含まれている場合が多く，これらの情報を保護するために部分的に秘匿（これを「墨塗り」という）をしたい場合は多い．しかし，通常のデジタル署名を施している状況で，墨塗りを許すと，墨塗り以外の部分を改ざんしても，その改ざんを検知できないという問題がある．一方で墨塗りを許すと，過剰な墨塗りを行い，開示対象文書の提出を逃れる可能性も出てくる．そこで本稿では，セキュリティデバイスを用いて，開示情報の墨塗りと，証拠性の確保の両立を可能とするe-Discoveryシステムの提案を行う．, In late years the e-Discovery technique which is an electronic disclosure procedure of evidence in digital forensic technique becomes important. In a document to disclose, there is much it when wanting to do concealment (this is called “sanitizing”) partially so that a lot of cases that privacy information or privacy information are included in protect these information. However, there is a problem not to be able to detect the manipulation even if I tamper with moiety except a sanitizing method of coating when I allow you to a sanitizing method of coating in circumstances making normal digital signature on. On the other hand, I do a surplus sanitizing method of coating when I forgive a sanitizing method of coating, and potency escaping from presentation of an object document comes out. Thus, by this thesis, I use a security device and suggest an e-Discovery system enabling compatibility of security of a sanitizing method of coating of disclosure information and evidence nature.},
 pages = {3191--3198},
 title = {開示情報の墨塗りと証拠性確保を両立させるe-Discoveryシステムの提案},
 volume = {49},
 year = {2008}
}