{"updated":"2025-01-20T02:40:12.065027+00:00","metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00186252","sets":["1164:4088:9383:9384"]},"path":["9384"],"owner":"11","recid":"186252","title":["属性ベース暗号を用いたファイル共有サービスの複数組織対応に関する考察"],"pubdate":{"attribute_name":"公開日","attribute_value":"2018-02-26"},"_buckets":{"deposit":"7ed0858c-00cf-46b4-89cc-4368027e7c66"},"_deposit":{"id":"186252","pid":{"type":"depid","value":"186252","revision_id":0},"owners":[11],"status":"published","created_by":11},"item_title":"属性ベース暗号を用いたファイル共有サービスの複数組織対応に関する考察","author_link":["416960","416957","416961","416953","416956","416962","416958","416955","416954","416959"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"属性ベース暗号を用いたファイル共有サービスの複数組織対応に関する考察"},{"subitem_title":"A Study on File Sharing Services using CP-ABE Support for Multi-Authorities","subitem_title_language":"en"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"認証・検証・暗号","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2018-02-26","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東海大学情報通信学部"},{"subitem_text_value":"東海大学情報通信学部"},{"subitem_text_value":"東海大学情報通信学部"},{"subitem_text_value":"東海大学情報通信学部"},{"subitem_text_value":"広島大学情報メディア教育研究センター"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_publisher":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"情報処理学会","subitem_publisher_language":"ja"}]},"publish_status":"0","weko_shared_id":-1,"item_file_price":{"attribute_name":"Billing file","attribute_type":"file","attribute_value_mlt":[{"url":{"url":"https://ipsj.ixsq.nii.ac.jp/record/186252/files/IPSJ-IOT18040014.pdf","label":"IPSJ-IOT18040014.pdf"},"date":[{"dateType":"Available","dateValue":"2020-02-26"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-IOT18040014.pdf","filesize":[{"value":"1.4 MB"}],"mimetype":"application/pdf","priceinfo":[{"tax":["include_tax"],"price":"660","billingrole":"5"},{"tax":["include_tax"],"price":"330","billingrole":"6"},{"tax":["include_tax"],"price":"0","billingrole":"43"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"fa35ccd0-3def-427e-ab3f-d905c3fec039","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2018 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"石橋, 拓哉"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"鈴木, 達也"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"伊藤, 勝彦"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"大東, 俊博"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"相原, 玲二"}],"nameIdentifiers":[{}]}]},"item_4_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Takuya, Ishibashi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Tatsuya, Suzuki","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Katsuhiko, Ito","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Toshihiro, Ohigashi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Reiji, Aibara","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA12326962","subitem_source_identifier_type":"NCID"}]},"item_4_textarea_12":{"attribute_name":"Notice","attribute_value_mlt":[{"subitem_textarea_value":"SIG Technical Reports are nonrefereed and hence may later appear in any journals, conferences, symposia, etc."}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourceuri":"http://purl.org/coar/resource_type/c_18gh","resourcetype":"technical report"}]},"item_4_source_id_11":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"2188-8787","subitem_source_identifier_type":"ISSN"}]},"item_4_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"Dropbox に代表されるオンラインストレージサービスが普及してきている．このようなサービスではストレージの管理者によりデータを覗き見られる危険性があることから，ユーザ側で暗号化してデータを保護するシステムが注目されている．大東らは暗号文ポリシー属性ベース暗号 (CP - ABE) を用いてファイル本体およびファイル名 ・ ディレクトリ名を保護できるクライアントベースの暗号化ファイル共有サービスを提案している．しかし，これらは単一組織での使用を想定している．そこで本稿では，大東の方式を複数組織で利用可能なように拡張する方法について検討する．その結果，我々が想定している利用方法では，Lewko が提案した複数機関で使用可能な CP - ABE が適していることがわかった．さらに，Lewko の方式を実装し，処理速度を評価する．","subitem_description_type":"Other"}]},"item_4_description_8":{"attribute_name":"論文抄録(英)","attribute_value_mlt":[{"subitem_description":"A lot of online storage services, e.g. Dropbox, have been widely used. These services have a weakness, which the storage administrator can obtain contents of user's files. Hence client based encryption systems are used in order to protect user's files on online storage server. Ohigashi et al. proposed a method to protect not only content of user's file but also file name of it by using Ciphertext-Policy Attribute-Based Encryption (CP-ABE). However, their method can only be used in case of a single authority. In this paper, we study methods for file sharing services using CP-ABE support for multi-authorities, and show that Lewko's de-centralized CP-ABE is suitable for file sharing services for multi-authorities. In addition, we give the implementation, and evaluate the performance.","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"6","bibliographic_titles":[{"bibliographic_title":"研究報告インターネットと運用技術（IOT）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2018-02-26","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"14","bibliographicVolumeNumber":"2018-IOT-40"}]},"relation_version_is_last":true,"weko_creator_id":"11"},"created":"2025-01-19T00:53:13.518493+00:00","id":186252,"links":{}}