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