1. Friendly Authentication and Communication Experience (Face) for Ubiquitous Authentication on Mobile Devices Author: Benjamin Halpert Presented by: 魏聲尊

2. Outline Introduction FACE Ad-hoc authentication

3. Introduction Current wireless personal area network (WPAN) standers provide no method for two previously unacquainted parties to authenticate to one another in a trusted manner upon first encounter. The target environment for FACE is wirelessly enabled mobile devices that form ad-hoc network.

4. FACE Motivation – reducing the passage of malicious code from one wireless enabled device to another – bring people in contact with others they may not typically associate – the proposed ubiquitous authentication method can assist in reducing identity theft occurrences Requirement –Low resource consumption –To include battery life –Processing power –Application footprint

5. FACE Assumption –all devices within the ad-hoc network have already agreed on a given routing to communicate – at lease one device has access to the internet – the user has already been authenticated to the actual in-hand Environment –wirelessly enabled mobile devices

6. Ad-hoc authentication Towards Flexible Credential Verification in Mobile Ad-hoc Network SHAD:A Human Centered Security Architecture for Partitionable, Dynamic and Heterogeneous Distributed System Talking To Strangers: Authentication in Ad- hoc Wireless Network

7. Towards Flexible Credential Verification in Mobile Ad-hoc Network It improves the likelihood that participants in an ad-hoc network can verify each others credentials despite the lack of access certification and attribute authorities. It combines aspect in PGP, XML Signature and SMAL and comprise four architecture. – the XML credential generator Create the readable credential assertion statement (CAS) – the security assertion module Issue assertion to other users (ASS) – the verification and validation module Determinate whether a CAS is authentic – the key management module Provide key

8. Towards Flexible Credential Verification in Mobile Ad-hoc Network

9. SHAD:A Human Centered Security Architecture for Partitionable, Dynamic and Heterogeneous Distributed System SHAD avoids the use of centralized entities and it is designed to be agile in a peer-to peer environment. SHAD will meet the following requirements: –1.Independence of centralized services or authentication servers. –2.Ease of use and the non-obtrusiveness. –3.Supporting of disconnections and delegation. –4.Minimizing of power consumption and the processing limitations of mobile devices –Ease of deployment

11. Talking To Strangers: Authentication in Ad-hoc Wireless Network They provide secure authentication using almost any established public-key-based key exchange protocol. A few concepts: –Demonstrative identification –Location-limited channels –Pre-authentication