Privacy Data Sharing Platform

PDSP

Scenario & Solution

• Situation:• Tom is 78 years old, lives alone in his rented house.• CentreLink has Tom’s most of situation information, but not allowed to

share by law.• Aged care department supply varieties services, e.g. visited care assistant,

but Tom don’t even know where he could ask help from.

• Solution:• User controlled and monitored data sharing.• Instant Message tools supported notification and authorization.• Workflow based data sharing processing.• Policy-based access control on privacy data.• Ted supported authentication.• Integrated Decision Making Model based on Accountability&Reputation.

Data and Control Flow Framework

Private Data

Host

AccessControl

1. R

eque

st fo

r priv

ate

data 2. Request for approval

3. Approval/Deny

Policy Filtering

Privacy Data Sharing

• Privacy Data• E.g.Medical,Financial,Contact,Internet

• PD sharing Issues:• Legacy• Security• Preserving

• Technologies:• TED security device• Policy-based Access Control(XACML)• Accountability&Reputation based Decision

Making Model

• Implemented:• User Controlled Access Control• Workflow Framework• Instant Message Tools• Reserved Interface for

• XACML• DMM

Feature Overview

• Policy based Access Control• 3 Party involved Privacy Data Sharing• Decision Making Model(Accountability&Reputation Based)• Workflow Processing• Instant Message Tools• Digital Signature

XACML Concept

PolicySet

PoliciesObligations

Rules

Target

Obligations

Condition

Effect

Target

Target

XACML Data-flow Diagram

• Policy & PolicySet – combining of applicable policies using CombiningAlgorithm

• Target – Rapidly index to find applicable Policies or Rules• Conditions – Complex boolean expression with many

operands, arithmetic & string functions• Effect – “Permit” or “Deny”• Obligations – Other required actions• Reference:

• Sun XACML Implementation v 1.2 (http://sunxacml.sourceforge.net/)

• XACML Documents(http://www.oasis-open.org/committees/xacml/) 

• XACML Tutorial with Usecase

Who can access what information

C:\Documents and Settings\jia020\Desktop

XML Data Format

Procedure & Interface

• Login(Ind,Org,Admin) • Subscribe(Ind)• Query(Org)• Review(Admin)• Policy checking and content filtering(Sys)• Message(Ind)• Authorisation(Ind)• Get Released Result (Org)

Login

Subscribe

Query

Review

Admin workflows

Receive Messages

Message Approve

Task Manage

Released Result

Released Result In GoogleMap