Transcript Peer Router retains public key on routing table Route discovery

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.