Phd Transfer

1
Phd Transfer

• Student Robert McAdoo
• Supervisor Donal O'Mahony

2
Overview

• Research Problem
• Sobriquet Overview
• Related Work
• Novel Features
• Status
• Plan

3
Research Question

• Motivation
• No person identifier in Internet infrastructure
• Remove dependency on application identifiers
• Help manage identifiers
• Privacy issues
• Problem
• How do we identify people in a way that is
  usable, scalable, and doesn't compromise their
  privacy?

4
Sobriquet

• Overview
• Each person maintains their own namespace(s)?
• Identifiers are exchanged out of band
• Accept risk during initial exchange
• Security of identifier is same as last time
• Semantics derived from meaning to individual
• Local names map to identity presented
• Credentials issued to trustworthy participants

5
Initial Exchange
6
Call Setup
7
Goals recap

• Scalability
• Peer to peer nature
• Small amount of state to be stored
• Assume proactive caching
• Usability
• Identifiers have meaning for person
• Functionality analogous to address book
• Privacy
• No identifying information leaked

8
Related Work

• Unmanaged Internet Architecture, Petnames
• Self-certifying Filesystem, Host Identity
  Protocol
• Personal Namespaces, VeryIDX
• Credentica, Idemix
• OpenID, SXIP, LID
• Liberty Alliance, Shibboleth
• Personal Communications

9
Novel Features

• Same as last time identification
• No linking of sessions
• User derives semantic value from identifier
• Trust augmentation by reputation
• Certified exchanges and outcomes
• Reputation as collateral
• Decentralised Identifier Portability
• Unified identity for web and telecommunications
• Lack of third party

10
Status

• Design
• Semi-complete
• Due to finish in April/May
• Implementation
• Signature scheme implemented
• Due to finish in June
• Thesis
• Aim to be completed by October

11
Publications

• Three so far
• Architectures for Person to Person Communications
  in Disaggregated Networks - Robert McAdoo,
  Patroklos Argyroudis, Linda Doyle and Donal
  O'Mahony. (ICDT'06)?
• Comparing the Costs of Public Key Authentication
  Infrastructures - Patroklos Argyroudis, Robert
  McAdoo and Donal O'Mahony. (WESII'06)?
• Analysing the Security Threats against Network
  Convergence Architectures - Patroklos Argyroudis,
  Robert McAdoo, Stephen Toner, Linda Doyle and
  Donal O'Mahony. (IAS'07)
• Plan for two more
• Design of identification system
• Revocation of identifiers