{"updated":"2025-01-21T10:59:26.766034+00:00","metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00102091","sets":["1164:3925:7477:7620"]},"path":["7620"],"owner":"11","recid":"102091","title":["準同型暗号を用いた秘匿生体認証に対する安全性について(その2)"],"pubdate":{"attribute_name":"公開日","attribute_value":"2014-06-26"},"_buckets":{"deposit":"0549f6fe-073d-4aaa-82c9-9b95f585d01e"},"_deposit":{"id":"102091","pid":{"type":"depid","value":"102091","revision_id":0},"owners":[11],"status":"published","created_by":11},"item_title":"準同型暗号を用いた秘匿生体認証に対する安全性について(その2)","author_link":["0","0"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"準同型暗号を用いた秘匿生体認証に対する安全性について(その2)"},{"subitem_title":"Countermeasure to Attack against a Privacy-preserving Biometric Authentication by using Homomorphic Encryption","subitem_title_language":"en"}]},"item_type_id":"4","publish_date":"2014-06-26","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"株式会社富士通研究所"},{"subitem_text_value":"株式会社富士通研究所"},{"subitem_text_value":"株式会社富士通研究所"},{"subitem_text_value":"株式会社富士通研究所"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"FUJITSU Laboratories Ltd.","subitem_text_language":"en"},{"subitem_text_value":"FUJITSU Laboratories Ltd.","subitem_text_language":"en"},{"subitem_text_value":"FUJITSU Laboratories Ltd.","subitem_text_language":"en"},{"subitem_text_value":"FUJITSU Laboratories Ltd.","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/102091/files/IPSJ-CSEC14066045.pdf"},"date":[{"dateType":"Available","dateValue":"2100-01-01"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-CSEC14066045.pdf","filesize":[{"value":"383.2 kB"}],"mimetype":"application/pdf","priceinfo":[{"tax":["include_tax"],"price":"0","billingrole":"30"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"15adec08-7b5c-4a21-9490-1593518aa7bc","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2014 by the Institute of Electronics, Information and Communication Engineers This SIG report is only available to those in membership of the SIG."}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"酒見, 由美"},{"creatorName":"武仲, 正彦"},{"creatorName":"鳥居, 直哉"},{"creatorName":"安田, 雅哉"}],"nameIdentifiers":[{}]}]},"item_4_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Yumi, Sakemi","creatorNameLang":"en"},{"creatorName":"Masahiko, Takenaka","creatorNameLang":"en"},{"creatorName":"Naoya, Torii","creatorNameLang":"en"},{"creatorName":"Masaya, Yasuda","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA11235941","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":"ID/パスワードの使い回し問題により，生体情報を使った認証への注目が集まっている．生体情報は個人を特定できるセンシティブな情報であることから，準同型暗号により生体情報を暗号化したまま認証処理を行う秘匿生体認証方式が提案されている．著者等はこれまでに，Hattori et al. が提案した準同型暗号を用いたキャンセラブル生体認証方式に対し，二値符号が利用される場合に，なりすまし攻撃，テンプレート復元攻撃が可能であることを報告し，それらに対する対策を検討した．さらに，著者らは，Yasuda et al. が提案した準同型暗号を用いた秘匿生体認証方式に対するなりすまし攻撃，テンプレート復元攻撃が可能であることを報告した．本稿では，Yasuda et al. の準同型暗号を用いた秘匿生体認証方式に対し，Hattori et al. 方式への攻撃に対する対策として検討した，特徴ベクトルが二値符号であることを確認する対策の適用可能性について検討する．その結果，二値符号であることを確認する対策については，Yasuda et al. の方式へ単純に適用できないということが分かった．そこで，新たにユーザ乱数を Xor マスクする対策，乗算マスクする対策，加算マスクする対策を提案し，その効果について検討を行う．","subitem_description_type":"Other"}]},"item_4_description_8":{"attribute_name":"論文抄録(英)","attribute_value_mlt":[{"subitem_description":"Biometric authentication attracts much attention because of the reuse problem of IDs and passwords. Recently, privacy-preserving biometric authentication schemes in which authentication process is exectuted on encrypted biometric information by homomorphic-encryption have been proposed. In our previous work, we have shown a spoofing attack to arbitrary user and a recovery attack for template against a cancelable biometric authentication scheme based on homomorphic encryption proposed by Hattori et al. when a binary coding is used. In addition, we have also proposed a countermeasure to our attack. Furthermore, a spoofing attack to arbitrary user and a recovery attack for template against a cancelable biometric authentication scheme based on homomorphic encryption by Yasuda et al. have been proposed. In this paper, we consider about applicability of the proposed countermeasure which verifies whether a feature vector is a binary code or not to our attack against Hattori et al. scheme to Yasuda et al. scheme. As a result, it is difficult to apply the countermeasure to Yasuda et al. scheme. Then, we consider about new countermeasure that uses Xor masking, multiplicative masking and additive masking, respectively.","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"8","bibliographic_titles":[{"bibliographic_title":"研究報告コンピュータセキュリティ（CSEC）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2014-06-26","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"45","bibliographicVolumeNumber":"2014-CSEC-66"}]},"relation_version_is_last":true,"weko_creator_id":"11"},"created":"2025-01-18T23:47:26.031036+00:00","id":102091,"links":{}}