Bluetooth & Fiat

University of Virginia

1

University of Virginia2

presentspresents

Menz Corporation

University of Virginia

3Introduction

• Definition

• History

• Technologies

• Application

• Development

• Overview

• Service Provider

University of Virginia

4Bluetooth In Past

• 10th Century Danish King (unified warring Viking Tribes): Harald Bluetooth

• No Wireless Networks prior to 20th Century

• New Wireless Transmission Schemes for the 21st Century– 802.11b– Home Radio Frequency– Bluetooth (version 1.0)

University of Virginia

5

• Ad hoc Networks• Bluetooth Chip: $5• Range 10 meters (30 feet)• Throughput: 720,000 bps• Peer to Peer• Piconet (8/250)• Scatternet (10 Piconets)

Bluetooth In Present

University of Virginia

6Bluetooth Applications

University of Virginia

PICONET

• Type of Network

• Containing 8 System

• Grouped into

(i)Master Section

(ii)Slave Section

• Only Official Use

7

University of Virginia

8Bluetooth Development

Local AreaNetwork(LAN)

Wireless Phone

Network

• Small Network• Large Throughput• IR or Radio Communication• Relays not used• Fixed with limited mobility • Small Distances

• Large Network• Small Throughput• Radio Communication• Relays used• Mobility• Large Distances

University of Virginia

9Bluetooth Overview

Local AreaNetwork

(LAN)

Wireless Phone

Network

Encryption

Authentication

Communication

• Challenge-Response Scheme• SAFER+• None/One-way/Mutual• Needed for encryption

• Optional• Symmetric Stream Cipher• Negotiable Key Size (8-128 bits)• Clock dependent

• Radio Frequency Hopping (1600 Hps)• 2.4GHz Frequency Range• RF Interface• 720 Kbps – 4 Mbps

University of Virginia

10Bluetooth Communication

• Link Manager Protocol (LMP) – Configure, authenticate and

handle the connections – Power management scheme

• Radio Frequency Communications (RF C)– Controls Frequency Hopping

for Bluetooth

• Logical Link Control (LLC)– Link Management

– Security Management– QoS Management

– Transmission Scheduling

University of Virginia

11Bluetooth Authentication

Link key generationKLINK

PINRandom #

SRES’SRES ACO’ACO

Encryption key generation

SRES’

BD_ADDRB

CHECKSRES = SRES’

E1

(SAFER+)BD_ADDRB

KLINK

AU_RAND

E1

(SAFER+)BD_ADDRB

KLINK

AU_RAND

A (Verifier) B (Claimant)

AU_RAND

University of Virginia

12Bluetooth Encryption

E0

BD_ADDRA

clockA

KC’

Kcipher

Kcipher

Kcipher

dataA-B

dataB-A

E0

BD_ADDRA

clockA

K’C’

K’cipher

K’cipher

K’cipher

dataA-B

dataB-A

data

A B

=

Is everything OK?Yes, BUT...

Is everything OK?Yes, BUT...

University of Virginia

13Bluetooth Disadvantage

• Encryption– Plain Text Attack

• Authentication– Unit Key Stealing

• Communication– Impersonation

Security Weaknesses

University of Virginia

14

Service Providers

1,900 Bluetooth Technology Manufactures

Menz Menz CorporationCorporation

SAN CO SYSTEMS

University of Virginia1515

University of Virginia1616

Blue & Me - Fiat and Microsoft Blue & Me - Fiat and Microsoft Collaboration Collaboration

University of Virginia1717

BLUE & ME DEVICEBLUE & ME DEVICE

University of Virginia1818

The Hands - Free SystemThe Hands - Free System SMS ReaderSMS Reader Musical EntertainmentMusical Entertainment MP3MP3 WMAWMA WAVWAV Digital FormatDigital Format

University of Virginia1919

University of Virginia2020

University of Virginia2121

University of Virginia2222

University of Virginia2323

University of Virginia2424

University of Virginia2525

University of Virginia2626

University of Virginia

THANK YOU

SUBMITTED BY S.MURALI J.SARAVANAN