{"updated":"2025-01-19T21:05:19.113387+00:00","metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00201331","sets":["6164:6165:6462:10022"]},"path":["10022"],"owner":"44499","recid":"201331","title":["MWmessage: 追跡困難メッセージングを実現するためのMimblewimbleの拡張"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-10-14"},"_buckets":{"deposit":"d8238f06-32b1-471a-8d0b-3357a3202112"},"_deposit":{"id":"201331","pid":{"type":"depid","value":"201331","revision_id":0},"owners":[44499],"status":"published","created_by":44499},"item_title":"MWmessage: 追跡困難メッセージングを実現するためのMimblewimbleの拡張","author_link":["491923","491922","491921","491924"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"MWmessage: 追跡困難メッセージングを実現するためのMimblewimbleの拡張"},{"subitem_title":"MWmessage: An Extension of Mimblewimble for Unlinkable Messaging","subitem_title_language":"en"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"ブロックチェーン，Mimblewimble，匿名メッセージング，追跡困難性，スケーラビリティ","subitem_subject_scheme":"Other"}]},"item_type_id":"18","publish_date":"2019-10-14","item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_18_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"（株）富士通研究所セキュリティ研究所／東京大学生産技術研究所"},{"subitem_text_value":"東京大学生産技術研究所"}]},"item_18_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"Security Laboratory, Fujitsu Laboratories Ltd.  /  Institute of Industrial Science, The University of Tokyo","subitem_text_language":"en"},{"subitem_text_value":"Institute of Industrial Science, The University of Tokyo","subitem_text_language":"en"}]},"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/201331/files/IPSJCSS2019038.pdf","label":"IPSJCSS2019038.pdf"},"date":[{"dateType":"Available","dateValue":"2021-10-14"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJCSS2019038.pdf","filesize":[{"value":"2.2 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":"30"},{"tax":["include_tax"],"price":"0","billingrole":"46"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"43870ea2-c40b-4853-8fc0-4d80f6aec7fe","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2019 by the Information Processing Society of Japan"}]},"item_18_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"宮前, 剛"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"松浦, 幹太"}],"nameIdentifiers":[{}]}]},"item_18_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Takeshi, Miyamae","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kanta, Matsuura","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_18_relation_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_select":"NCID","subitem_relation_type_id_text":"ISSN　1882-0840"}}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourceuri":"http://purl.org/coar/resource_type/c_5794","resourcetype":"conference paper"}]},"item_18_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"暗号資産の代表であるBitcoinは，トランザクション分析技術の急速な進歩に伴い，追跡困難性が低下している．そのような状況の中，追跡困難性とスケーラビリティを両立する匿名暗号資産プロトコルMimblewimbleが注目されている．しかし，現時点でMimblewimbleはメッセージングに関して多くの課題を抱えている．そこで，我々は，Mimblewimbleのメッセージングの課題を解決するために，Mimblewimble自身を拡張してブロックチェーン形式の追跡困難メッセージングを実現するMWmessageを提案する．本稿では，まずMimblewimbleの仕組みと特徴およびそのメッセージングに関する課題を整理した上で，課題を解決するためのMWmessageの仕組みを説明する．特に，メッセージの改竄を困難にするためのメッセージハッシュの仕組みと，Mimblewimbleのスケーラビリティを犠牲にすることなく追跡困難メッセージングを実現するためのメッセージへの有効期限付与の仕組みに焦点を当てる．最後に，MWmessageを一般の匿名メッセージングシステムとして机上評価する．","subitem_description_type":"Other"}]},"item_18_description_8":{"attribute_name":"論文抄録(英)","attribute_value_mlt":[{"subitem_description":"In Bitcoin, which has been the representative cryptocurrency until today, unlinkability is being reduced because of the various current technologies for transaction analysis. In this situation, Mimblewimble, an anonymous cryptocurrency protocol which is designed to achieve unlinkability and scalability at the same time, is attracting public attention. However, Mimblewimble has several problems in its messaging at this moment. Therefore, we propose MWmessage, a novel blockchain-based unlinkable messaging system to solve Mimblewimble's messaging problems by extending Mimblewimble itself. In this paper, we first summarize Mimblewimble's architecture, features, and problems in messaging. We next show MWmessage's architecture, which solves the problems. Especially, we focus on the mechanism of message hash to keep the message payload tamper-resistant and the mechanism introducing message expiration time to realize unlinkable messaging without sacrificing Mimblewimble's scalability. Finally, we evaluate MWmessage logically as a general private messaging system.","subitem_description_type":"Other"}]},"item_18_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"267","bibliographic_titles":[{"bibliographic_title":"コンピュータセキュリティシンポジウム2019論文集"}],"bibliographicPageStart":"260","bibliographicIssueDates":{"bibliographicIssueDate":"2019-10-14","bibliographicIssueDateType":"Issued"},"bibliographicVolumeNumber":"2019"}]},"relation_version_is_last":true,"weko_creator_id":"44499"},"created":"2025-01-19T01:04:36.309675+00:00","id":201331,"links":{}}