{"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00091149","sets":["1164:2836:7121:7122"]},"path":["7122"],"owner":"11","recid":"91149","title":["マルチユーザ利用を考慮したスマートデバイス向けデータ保護方式の提案"],"pubdate":{"attribute_name":"公開日","attribute_value":"2013-03-07"},"_buckets":{"deposit":"a96f1a08-8b07-4405-bd21-85f82a842a0e"},"_deposit":{"id":"91149","pid":{"type":"depid","value":"91149","revision_id":0},"owners":[11],"status":"published","created_by":11},"item_title":"マルチユーザ利用を考慮したスマートデバイス向けデータ保護方式の提案","author_link":["0","0"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"マルチユーザ利用を考慮したスマートデバイス向けデータ保護方式の提案"},{"subitem_title":"A Proposal of a Data Protection Scheme for Smart Devices Considering Multi-User Environments","subitem_title_language":"en"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"プライバシー保護","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2013-03-07","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"株式会社NTTデータ"},{"subitem_text_value":"株式会社NTTデータ"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"NTT DATA CORPORATION","subitem_text_language":"en"},{"subitem_text_value":"NTT DATA CORPORATION","subitem_text_language":"en"}]},"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/91149/files/IPSJ-DPS13154058.pdf"},"date":[{"dateType":"Available","dateValue":"2015-03-07"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-DPS13154058.pdf","filesize":[{"value":"1.0 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":"34"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"5fd81e44-e263-464e-9430-840f59c17204","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2013 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"栗原, 優樹"},{"creatorName":"市原, 尚久"}],"nameIdentifiers":[{}]}]},"item_4_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Yuuki, Kuribara","creatorNameLang":"en"},{"creatorName":"Naohisa, Ichihara","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN10116224","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_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"近年，スマートフォンやタブレット端末などのスマートデバイスの業務活用が注目されている．スマートデバイスは常時携行が前提となるために，PC などの情報端末と比べて紛失による情報漏洩の可能性が高く，スマートデバイス内に保存された業務ファイルの保全方法が課題となる．課題解決の方法として業務ファイルを暗号化し，復号する際にデバイス外で保管されている復号鍵を用いるという方法が考えられるが，複数ユーザがデバイスや業務ファイルを共用するケースでは，業務ファイルごとのアクセスストラクチャが異なるために １ ユーザが業務ファイルごとに異なる復号鍵を保持しなければならなくなる．そこで本研究では，１ つの復号鍵で異なるアクセスストラクチャを持つ業務ファイルへアクセスすることのできる方式を提案する．","subitem_description_type":"Other"}]},"item_4_description_8":{"attribute_name":"論文抄録(英)","attribute_value_mlt":[{"subitem_description":"Recent years, smart phones and tablet devices are widely used and one uses those smart devices not only on private but also on business. Suppose that one uses a smart device on business and mounts confidential business files on the device, it is an issue how to keep confidentiality of the files since a smart device is more likely to be lost than note-book or desk-top type computers. Trivially, one can keep confidentiality of the files if one encrypts the files and keep its decryption key secretly out of the smart device; however, it needs a different decryption key by the different access structure to decrypt encrypted files which have different access structures each other, when a smart device and contained files are shared by multiple users. This yields quite complicated life cycle management for the keys. In this study, we propose a decryption key generation scheme so that one decrypts the different encrypted files with a single decryption key.","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"6","bibliographic_titles":[{"bibliographic_title":"研究報告マルチメディア通信と分散処理（DPS）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2013-03-07","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"58","bibliographicVolumeNumber":"2013-DPS-154"}]},"relation_version_is_last":true,"weko_creator_id":"11"},"id":91149,"updated":"2025-01-21T15:43:39.956252+00:00","links":{},"created":"2025-01-18T23:40:30.253877+00:00"}