WiNSeC Dr. Patrick White Assoc. Director WiNSeC Office: - - PowerPoint PPT Presentation

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WiNSeC Dr. Patrick White Assoc. Director WiNSeC Office: - - PowerPoint PPT Presentation

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Center for Wireless Network Security WiNSeC Dr. Patrick White Assoc. Director WiNSeC Office: 201-216-5028 October 29, 2003 pw hite1@ stevens-tech.edu Wireless Network Security Center (WiNSeC) Principal areas of focus: Secure,

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SLIDE 1

Center for Wireless Network Security

WiNSeC

  • Dr. Patrick White
  • Assoc. Director – WiNSeC

Office: 201-216-5028 pw hite1@ stevens-tech.edu October 29, 2003

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SLIDE 2

Wireless Network Security Center (WiNSeC)

Principal areas of focus:

  • Secure, robust wireless communications technologies for

Homeland Defense and Security:

– Physical layer vulnerabilities, including anti-jamming/eavesdropping – Spectrally efficient communications – Interoperability of wireless systems – Energy efficient sensor networks – Wireless cyber counter measures

  • Situational awareness tools for C2

– Visualization of sensor data – Decision aids

  • Secure communications networks and command/control

facilities for First Responders

Initial funding from DoD – administered by Picatinny Arsenal

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SLIDE 3

TestBed / Analysis Research

“Twin Foci”

Wireless Network Security Technology Commercialization/ Enterprise Development

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SLIDE 4

Multi-Environment

  • Background radio noise
  • Multipath
  • Shadowing …

MARI TI ME URBAN SUBURBAN

If it works here …

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SLIDE 5

Ferry 1 Ferry 2 Ferry 3 Ferry 4 Ferry 5

L-Band Satellite MTS

Sports Field

Stevens Police

CDMA - Verizon Network

Teletype Hand- Held Applications

Ferry

Bluetooth

Networked Sensors Unmanned Sensor Control Ferry Pier

Satellite Network

Multi-Network Test Bed

Campus Wireless Network Internet Network Stevens Network

GPS Satellite

Situational Awareness Tools & Decision Aids Robust physical layer Upper mm λ, Free-space

  • ptics, chaotic

spreading, etc Cyber Security detection & mitigation tools

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SLIDE 6

WiNSeC Research

Information Assurance

  • Secure and Reliable Wireless

Sensor Networking

  • Distributed Access Control
  • Privacy Preserving

information sharing

  • Robust Multimedia

Networking

Physical Security

  • Secure Network Infrastructure
  • Smart Antennas for

Interference Suppression

  • Modeling and Simulation

Tools

  • Secure Protocols for Wireless

Applications

  • RF Transmission Power

Management and Detection: Chaotic Direct Sequence Spread Spectrum

Network Management

  • Visualization: Sensor Data
  • Secure and Sound Decision

Tools

  • Cyber Security Risk Analysis

and Evaluation

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SLIDE 7

Privacy-Preserving Information Sharing (Rebecca Wright)

Allow multiple data holders to collaborate to compute important (e.g., security-related) information while protecting the privacy of

  • ther information.

Particularly relevant now for agencies that would like to share sensitive information

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SLIDE 8

Privacy-Protecting Statistics

CLIENT Wishes to compute statistics of servers’ data SERVERS Each holds large database

  • Parties communicate using cryptographic protocols

designed so that:

– Client learns desired statistics, but learns nothing else about data (including individual values or partial computations for each database – Servers do not learn which fields are queried, or any information about other servers’ data – Computation and communications are very efficient

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SLIDE 9

Initial Experimental Results

5 10 15 20 25 30 20,000 40,000 60,000 80,000 100,000

Database size Time (minutes)

Total time

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SLIDE 10

Type-Based Distributed Access Control (Dominic Duggan)

Confidential e-mail Problem: Data leaving owners environment has limited protection

  • Investigate use of type checking in combination with key and data

encryption to maintain owner control

– Data protected by type and encryption – Copy operations on local and/or remote machines controlled by type checking

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SLIDE 11

Cyber Security (Susanne Wetzel)

  • Explore vulnerability of Ad-

Hoc Sensor network fields to a variety of cyber and/or combination (cyber/physical) attacks that disrupt routing tables:

– Disconnect network nodes – Degrade good-put – Hi-jack traffic to/from selected nodes – Force traffic through a limited number (1?) of nodes to degrade performance, deplete power, etc.

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SLIDE 12

Visualization of Noisy Sensor Data (George Kamberov)

Noisy Input Data Clean Data

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SLIDE 13

Processing Results & Reconstruction

Facial Reconstruction Facial Feature Line-Based Grids

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SLIDE 14

Photo-Realistic Rendering of Facial Models with Dynamic Texture Mapping

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SLIDE 15

Long λ Laser for Free Space Optics (Rainier Martini)

  • Quickly deployed, low cost alternative for access link

– No digging required – install, aim and go

  • Broadband ≥ 10 Gbps capable
  • Difficult (impossible?) to intercept or jam
  • But typical wavelengths, 830/1330/1550 nm, susceptible to

heavy fog

Funded by DARPA

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SLIDE 16

FSO Losses in water fog

  • MIR link allows transmission under extreme fog conditions,

no strong differences for classical NIR systems. Fog concentration increased with time

  • 1.3µm & 1.5µm

strongest losses (> 40dB)

  • 830nm strong

losses (~40dB)

  • 8µm nearly no

losses (~3dB)

15:07 15:21 15:36 15:50 16:04 16:19

  • 60
  • 50
  • 40
  • 30
  • 20
  • 10

Transmission losses [dB] Time

W avelength: 830 nm 1.3 µm 1.55 µm 8 µm

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SLIDE 17

QC laser: High modulation bandwidth at 8µm

  • High frequency limit

greater 10 GHz !

  • Flat response
  • Background due to

electrical noise and free radiation

  • SNR ~40 dB up to

5 GHz

  • No resonance visible

0.1 1 10

  • 90
  • 80
  • 70
  • 60
  • 50

Background

Modulation response [dB] Frequency [GHz]

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SLIDE 18

Upper MM-Wave Radio > 28 GHz

  • High capacity, e.g., 10 Gbps,

point-to-point Ethernet up to 1km

  • High frequency reuse – narrow

beams cover small areas (less beam divergence, more limited propagation)

  • With high O2 absorption, can

provide in-building security; e.g., confine propagation to room.

  • Also minimal interference,

guaranteeing relatively clean signal reception.

  • Less susceptible to fog, but

more sensitive to heavy rain

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SLIDE 19

Network Research Test Bed (NSF)

Fiber Optic Backbones

UTP 5 User Terminal Transparent Software Integration Layer 802.11b, 802.11a Satellite Coaxial Fiber optic UTP 5 User Terminal 802.11b, 802.11a Satellite Coaxial Fiber optic Authentication Accounting Wide Area Network Gateway Authorization Transparent Software Integration Layer CDMA, GPRS FSO, Microwave FSO, Microwave CDMA, GPRS Authentication Accounting Wide Area Network Gateway Authorization
  • Simultaneous connectivity to multiple

networks

  • Automatic selection of network with

best available capability

  • Maximize availability/performance &

Coverage

  • Optimize spectral &

energy efficiency

  • Provide extra dimension

in security

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SLIDE 20

Network of Networks for Public Safety

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SLIDE 21

A Hybrid Solution for Coverage and Interoperability

  • Car maintains connectivity (via software radio) to multiple wireless

networks – interoperability with national coverage, minimal dead spots

  • Messages automatically sent to network with best instantaneous

performance

  • Outside the car, option to use the car to relay messages
  • Most modifications limited to radio in the car, minimizing cost and

deployment interval

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SLIDE 22

Thank You

Patrick White Center for Wireless Network Security