Security Issues in Wireless Networks: M-Commerce, Health Monitoring, and Emergencies, Slides of Wireless Networking

Download Security Issues in Wireless Networks: M-Commerce, Health Monitoring, and Emergencies and more Slides Wireless Networking in PDF only on Docsity!

1. Introduction
2. Case Study
3. Security Issues
4. Conclusion

Outline

 Science and technology comes into almost every aspect of our lives, helping us to solve problems and create opportunities.  Despite the achievements, we face very real economic and environmental challenges that require a new level of effort and success.  While today, much security research is about defending against the attacks on security and privacy, there has been theoretical work in computer security, along with the beginnings of a science base for security.

Introduction

 M-Commerce

 Health monitoring 2004

 Health Care Application

 Emergency Medical Response 2005

Case Study

Case

M-Commerce

 Wireless Application Protocol (WAP)

 Created by WAP Forum

• Founded June 1997 by Ericsson, Motorola, Nokia, Phone.com
• 500+ member companies
• Goal: Bring Internet content to wireless devices

 Wireless Transport Layer Security (WTLS)

 Control: WAP Gap

• Data in the clear at gateway while re-encryption takes place

 Link Layer: LAN: 802.11, Bluetooth, WAN: Analog / AMPS

 Devices: Cell phone, Palm, WinCE, Blackberry

M-Commerce - (WAP)

Basic WAP Architecture

Web Server

WTLS SSL

Internet

WAP Gateway

WTLS: Wireless Transport Layer Security^ SSL: Secure Socket Layer

 The intermediate entity can potentially attack communications between two parties. Typically attacks involve altering the content or the order of messages and replaying messages sent earlier.

 In applications based on cell phones, by definition, the cell phone will know the physical location of client device. This creates privacy risks

Privacy and Authenticity

 Link Layer Security

• GSM: A3/A5/A8 (auth, key agree, encrypt)
• CDMA: spread spectrum + code seq
• CDPD: RSA + symmetric encryption

 Application Layer Security

• WAP: WTLS, WML, WMLScript, & SSL
• iMode: N/A
• SMS: N/A

Wireless Security Approaches

WTLS: Wireless Transport Layer Security WML: Wireless Markup Language^ SSL: Secure Socket Layer

CDMA: Code Division Multiple Access^ GSM: Global System for Mobile CDPD - Cellular Digital Packet Data

 Developing network architecture for smart healthcare will provide new opportunities for continuous monitoring for assisted and independent- living. This will preserve resident comfort, security and privacy for individuals while also providing a managing network for medical history records.

 Integration with existing medical practice and technology, real-time and long term monitoring, wearable sensors and assistance to chronic patients, elders or handicapped people

Health Monitoring Application (HMA)

Example: Smart Health Home

Layout of the experimental smart health home

Current configuration of the medical test-bed

Experimental Smart Health Home

 These system is single hop, as the radio

range covers all of the facility. A multi-hop

protocol will be necessary for access of

multiple floors, or if transmission power is

reduced.

 Data communication is bi-directional

between the motes and the Star gate. Time-

stamping is done by the PC when motion

events are received.

 When the data association mechanisms are not sufficient, or integrity is considered critically important, some functionalities of the system can be disabled.

 This preserves only the data which can claim a high degree of confidence.

 In an environment where false alarms cannot be tolerated, there is a tradeoff between accuracy and availability.

Data Integrity - HMA

Case

Health Care Application

 The use of wireless sensor networks (WSN) in healthcare applications is growing at a fast pace. Numerous applications such as:

• Heart rate monitor,
• Blood pressure monitor and
• Endoscopic capsule are already in use.

 To address the growing use of sensor technology in this area, a new field known as Wireless Body Area Networks (WBAN or simply BAN) has emerged.

Health Care Application (HCA)