anonymous P2P communications platform for secure mining of personal data with minimum risks on privacy Mnemonic Security, Inc. Fujitsu Prime Software Technologies Limited Imai Lab, IIS, University of Tokyo leakage of privacy information • • • • restoration is just impossible descendants could be influenced punishment makes no solution some corporate data are as critical risk management There could be no unbreakable data center, since men of flesh and blood are in charge. The key is minimizing the damage to the smallest unit – one individual. Depend less on centralized management Develop distributed management mining of personal data mining of piecemeal personal data ↓ out-of-mark propositions or spam mails received pertinent propositions received ↓ How much of my privacy is known to them? When/how they gathered it without me knowing? nightmare of leaking privacy for data centers nightmare of having privacy leaked for individuals striking a balance self-responsibility person-identification data to be managed by individuals effects mining of anonymous personal data maximum security distributed data base secured anonymity assurance & usability Secure user verification by easy and stress-free Mnemonic Guard scheme intermediary supplier bulletin board (DB) health data management center Issuance of certificate by Mnemonic Guard 公開サービス disclosed non-disclosure 非公開情報 for service data 公開サービス disclosed for service user anonymous P2P network by onion routing with backtrack encryption Online user verification by Mnemonic Guard 健康データ anonymous ・計測データ （血圧、体重等） health data ・年代 ・性別 anonymous communication 固定データ ・名前 ・住所 user id・年齢 data ・電話番号 Contained in user’s device health/medicine/food/sports service suppliers firewall within personal data onion routed P2P network Unicast communication by onion routing + multicast communication by P2P protocol Return routes retained in the packets Peer Peer Peer application P2P Onion Onion Proxy node application P2P Onion Onion Proxy node Peer application P2P Onion Onion Proxy node Peer Effects ・ Anonymity secured by onion routing and multicasting ・ Robustness of and reduced burden on the network dynamic route management • Peer Router retains public key on routing table • Route discovery protocol is onion-encrypted for anonymity • Onion Proxy generates Route Onion dynamically PeerS P2P Onion node Peer Onion Proxy Routing protocol PeerR Route to R encrypted by onetime public key of S P2P OnionRouting table, P2P Onion Routing table, node node public key public key Routing protocol Return route to PeeS held in Route Onion Dual Routing • Backtracking enabled by multiple onion routes retained in tree structure • Failure by onion routing → Retrial by P2Pmulticast onion routing failure P2Pmulticast applications privacy-protected data-mining Government to People Business to People Models in progress Health Care Nagoya Int’l Exposition secrecy-protected data mining Government Business Government to Business Business to Business health care program - personal data input - health care program - data to be mined - Nagoya International Exposition While roving around the venue, visitors keep receiving propositions and suggestions when their terminals are located by nearby radio transmitters. Privacy-conscious visitors can opt to be anonymous. Where are you from? another foreigner We have good Ukiyoe to offer! Watch! Do not walk! a shop A traffic lights There is an authentic Japanese restaurant 100m ahead. a billboard May I help you？ a local Japanese a foreign visitor Entrance Gate ハンディキャップの 情報もチケットに 組み込まれてる から説明しなくても 安心 Barrier-free Model Programmed for cloth ears Exit Gate 受付がとても スムース 出合ったお友達 と一緒に帰ろう。 ＩＴで友達が出来た！ 嬉しいな♪ Ticket Recognition 端末を返却ＯＫ 気をつけて！ From the RF tag of entrance ticket, the best program for the impaired person is selected and set up. This allows quick lending of information terminal. No advance setting is required. Management becomes easy. これなら会場 のどこへでも 行ける！ Get timetable in voice Communication with anybody Sightimpaired ハンディキャップを いちいち説明しなくても 誰とでも友達になれる To character Hearingimpaired Voice Guidance everywhere Timetable Guidance Character Support anytime From the different forms of transmitted information, the best one is automatically selected. Moderating the amount of information relieves the burden of information selection. To voice Conversation is automatically transformed to the other party's understandable form. Lively conversation can be enjoyed irrespective of one's impairment. Mono Rail Even if an attendant is not there in times of need, the nearest attendant is searched and asked for help. トイレまで 案内して もらえませんか？ the end Imai Lab, IIS, University of Tokyo Fujitsu Prime Software Technologies Limited Mnemonic Security, Inc.
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