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Projects

 

A Security Analysis of the IEEE 1588 Standard (Spring 2005 - Now)

  • The IEEE 1588 standard, which has a field name of Precise Time Protocol (PTP), is used for synchronizing real-time clocks in a distributed system with accuracy up to the sub-microsecond range. However, it has yet to develop any security mechanisms to protect the transmission of messages.
  • This project reviews the PTP and performs an initial security analysis of the message transmission period. It also provides suggestions on improvement for any security issue which hopefully can be useful in the revision of this standard

For more information on this project, please visit             https://lersse.ece.ubc.ca/tiki-index.php?page=Project_IEEE1588

A Security Analysis of the UBC Wireless Network

(September 2004 - November 2004)

EECE 412 Computer Security - Group project

Group members: Li-Heng Lin, Chun Yue Gordon Wong, and Jeanette Sin Mei Tsang

  • Abstract: We have found that the UBC Wireless Network is extremely vulnerable due to the fact that UBC does not force users of the network to take important security measures such as connecting to the network by VPN. The users are left on their own to protect their computing safety but our survey of users have found that most user have little or no knowledge in computer security issues. Furthermore, vulnerability in the ARP protocol allows attackers to spoof as network gateways and intercept sensitive data. There is no implemental solution to this as the vulnerability of ARP is an inherent design flaw. To improve security, the only solution is to educate users so that users take security precautions and that users do not transmit confidential information through the wireless network.

        Final report (in PDF format) -- 50KB

Design of an Image Fingerprinting Toolbox for Digital Right Management (Spring 2005)

  • Designed a toolbox using MATLAB that can perform fingerprint embedding, detecting and attacking on a greyscale image
  • Studied various techniques for fingerprint embedding and detection in different domains such as spatial, DCT and wavelet domains
  • Applied linear and non-linear attacks to embedding images
  • Tested the performance of the techniques stated above
  • Worked in group of 2
  • Under supervision of Dr. Jane Wang

Automated Pill Dispenser (Spring 2004)
  • Using a self-designed spring mechanism, pills are dispensed at a set time configured by the user.  If pill is not withdrawn from the dispensing slot, an audio message is played. Email is then sent to a pre-set email address (e.g. to a care taker or family member).
  • Worked in group of 7

        Final Report (in PDF format) -- 1.14MB

  • I was responsible to build the audio alarm (DSP) circuitry and to assist in the electrical module, which includes:
  • Dispensing motors

  • Lock motors

  • Pill detection sensor

  • Pill identification circuitry

Project Integrated Program (September 2000 - April 2001)

Module 1 – Electronic Postal Scale

  • Determined the weight of an unknown mass by building the following parts:
  • DC power supply

  • Instrumental amplifier

  • Low-pass filter

  • Analog-digital converter (by feeding signals into the computer and analyse the signal using MatLab)

Module 2 – Ultrasonic Range Finder

  • Constructed a device that estimates distance by applying the followings:

  • Hardware:

  • Comparator (LM319), optical amplifier, Altera Board (for digital electronics), and Hitachi 44780 LCD controller

  • Software (written in VHDL):

  • Counters, excitation source, display controller

Module 3 – Dielectric Constant Meter

  • Estimated the dielectric constant of a material placed between two parallel plates by comparing the total capacitance between the plates

  • Used similar parts as module 2, with the addition of the Analog peak detector, analog-to-digital converter (ADC 0809)

 

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