Bluetooth
By
Sonny Leung
Jennifer Portillo
Thomas Razo
Samson Vuong
Introduction
• What is Bluetooth?
• What does it do?
• History of Bluetooth
Introduction (cont’d)
• Is Bluetooth here to stay?
• What should we expect from
Bluetooth in the future?
What Bluetooth Delivers to the
end-user
• Connects a wide range of computing and
telecommunication devices
• Expand communication capabilities
• Devices can communicate with each other
with wireless connectivity
User Application
•
Car manufactures Industry
• E-Mail / Internet / Intranet Access
• Headsets
• Bluetooth will facilitate Local Area
Networks
Bluetooth in Action
In the house
Source: http//:www.motorola.com
In the Office ...
Home Security
On the Road
Source: http//:www.motorola.com
On your Car
Source: http//:www.motorola.com
Bluetooth Specifications
• Things that you must have:
– Transceivers and Receivers that can send and
receive data because they use Radio
Waves.
– MAC Address (Physical Address)
• Burnt on the NIC card by the manufacturer.
– PIN Number
• To identify the user using the device.
– A Piconet
– A FHHS protocol
What is a Piconet?
• A Piconet session is a communication link
that must be created between devices for
devices to communicate with each other.
• This is done when the MAC address and
the PIN number match.
Piconet (cont.)
• If two devices come onto contact with each
other( 32 feet) the user will be prompted to
initiate a communication session
• Users then can either deny or accept the request
to initiate a session
• Only devices approved by the user can take part
in the session
• Data will appear as noise to unauthorized
devices (A great security feature).
FHHS
• Bluetooth devices use a protocol called (FHHS)
Frequency-Hopping Spread Spectrum .
• Uses packet-switching to send data.
• Bluetooth sends packets of data on a range of
frequencies.
• In each session one device is a master and the
others are slaves.
• The master device decides at which frequency
data will travel.
FHHS
• Transceivers “hop” among 79 different
frequencies in the 2.4 GHz baud at a rate of
1600 frequency hops per second.
• The master device tells the slaves at what
frequency data will be sent.
• This technique allows devices to communicate
with each other more securely.
FHHS Example
Source: http://www.xircom.com
Bluetooth Security
• Modes
– Security Mode 1
• No Security
– Security Mode 2
• Service Level Enforced Security
• Implemented after channel is established
– Security Mode 3
• Link Level Enforced Security
• Implemented before channel is established
Devices
• “Trusted”
– No Restrictions
• “Untrusted”
– Restrictions, Access is limited
Service Levels
• Authorization and Authentication
• Authentication Only
• Open to all Devices
Link Level
• Bluetooth Device Address
• Private Link Key
• Private Encryption Key
• Random Number
Bluetooth Secure Enough?
• Not enough for confidential and top secret
information now but . . .
• Security will Improve
– Improve exisiting security
– Implement new security
Wrap up
• Growing Technology
• Automation
For More Information Please
Visit The Following Sites
• www.motorola.com
• www.xircom.com
• www.palowireless.com
• www.bluetooth.com