{"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00237186","sets":["1164:6389:11481:11662"]},"path":["11662"],"owner":"44499","recid":"237186","title":["完全準同型暗号に基づく確率的暗号化状態処理手法に関する検討"],"pubdate":{"attribute_name":"公開日","attribute_value":"2024-07-15"},"_buckets":{"deposit":"5b71d6ec-8728-4cf0-88d6-139608d49573"},"_deposit":{"id":"237186","pid":{"type":"depid","value":"237186","revision_id":0},"owners":[44499],"status":"published","created_by":44499},"item_title":"完全準同型暗号に基づく確率的暗号化状態処理手法に関する検討","author_link":["648796","648797","648798","648795"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"完全準同型暗号に基づく確率的暗号化状態処理手法に関する検討"},{"subitem_title":"Study on Stochastic Encrypted Data Processing Method based on Fully Homomorphic Encryption","subitem_title_language":"en"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"HWS","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2024-07-15","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東北大学電気通信研究所／大学院工学研究科／JST CREST"},{"subitem_text_value":"東北大学電気通信研究所／大学院工学研究科／JST CREST"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"Research Institute of Electrical Communication / Graduate School of Engineering, Tohoku University / CREST, JST","subitem_text_language":"en"},{"subitem_text_value":"Research Institute of Electrical Communication / Graduate School of Engineering, Tohoku University / CREST, JST","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/237186/files/IPSJ-SPT24056065.pdf","label":"IPSJ-SPT24056065.pdf"},"date":[{"dateType":"Available","dateValue":"2026-07-15"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-SPT24056065.pdf","filesize":[{"value":"2.3 MB"}],"mimetype":"application/pdf","priceinfo":[{"tax":["include_tax"],"price":"0","billingrole":"46"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"9de0a88d-bb48-4570-b38d-94c7f3211893","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2024 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":"佐藤, 颯"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"本間, 尚文"}],"nameIdentifiers":[{}]}]},"item_4_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Soh, Sato","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Naofumi, Homma","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA12628305","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":"2188-8671","subitem_source_identifier_type":"ISSN"}]},"item_4_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"プライバシーを保護したままクラウドサービスを活用するための技術として，暗号化状態で演算が可能な準同型暗号が注目されている．一方，準同型暗号を適用した暗号化状態処理は大幅に計算時間が増大することが指摘されている．本稿では，完全準同型暗号の一種である TFHE (Torus Fully Homomorphic Encryption) と確率的計算を組み合わせた確率的暗号化状態処理手法について述べる．特に，確率的計算により暗号化状態での処理の並列化が可能となることに着目し，その計算時間を削減する手法について述べる．まず，簡易なニューラルネットワーク回路による推論を確率的暗号化状態で評価する実験を通して，確率的計算では計算結果に誤差が生じても推論結果を維持しつつ，計算時間を CPU 実装および GPU 実装で 16 倍程度高速化できる可能性があることを示す．また，従来の 2 進数表現で入出力を行いつつ内部的に確率的計算を利用する内積計算手法に確率的暗号化状態処理を適用し，計算語長や並列数が増大するにつれて従来と比較して計算時間を削減できることを示す．","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"6","bibliographic_titles":[{"bibliographic_title":"研究報告セキュリティ心理学とトラスト（SPT）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2024-07-15","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"65","bibliographicVolumeNumber":"2024-SPT-56"}]},"relation_version_is_last":true,"weko_creator_id":"44499"},"id":237186,"updated":"2025-01-19T08:58:00.536880+00:00","links":{},"created":"2025-01-19T01:39:40.434143+00:00"}