Siaw-Lynn Ng

Contact details

I am currently a lecturer at Royal Holloway, University of London.

My contact address is

Dr Siaw-Lynn Ng
Information Security Group
Royal Holloway
University of London
Surrey TW20 0EX

Tel: 01784 414397

Fax: 01784 430766

Email to


I obtained a B.Sc. (Hons.) degree in Mathematics from the University of Adelaide in 1995, and a Ph.D. in Mathematics from Royal Holloway, University of London in 1998.

My PhD thesis is entitled ``On covers of point sets in finite geometries'' (postscript version or pdf version). The work includes constructions of minimal sets of points covering a line in finite projective planes, as well as a study on a family of extended generalised quadrangles and a construction of a new example. The abstract is available in postscript and pdf formats.

I was a post-doctoral research assistant at Royal Holloway from 1998 to 2001 (EPSRC Grant GL/L78505 - Authentication protocols with asymmetric computing requirements).

I am a senior lecturer, working part-time since 2004. My main research is in the fields of finite geometry, combinatorics and security protocols. My research focuses on the interaction between discrete mathematics and information security. Recent research areas are combinatorial problems in cryptography and communications, and the balancing of privacy and accountability in anonymous networks.

Academic activities

  • 2001-2004: Module leader for two MSc in Information Security courses: Business and Security Issues Raised by Electronic Commerce and Secure Electronic Commerce and Other Applications. I was also part of the team involved in providing consultancy through Royal Holloway Enterprise.
  • 2004-2013: Module leader and lecturer for a third year Mathematics undergraduate course ( MT3620 Cipher Systems) and co-lecturer with Dr Carlos Cid for the postgraduate course ( MT4620 Advanced Cipher Systems).
  • 2014 Autumn term: Sabbatical.
  • 2015 Module leader and lecturer for a third year Mathematics undergraduate course ( MT3620 Cipher Systems) and the postgraduate course ( MT5462 Advanced Cipher Systems).
  • 2018 Module leader and lecturur for the third year/MSc course Error-correcting codes (MT3610/5461).
MSc students
I am happy to supervise MSc projects (ISG and Maths) in the areas of
  • Applications of discrete maths in information security / cryptography, for instance, the application of difference families in areas of communications and information security, and the applications of coding theory.
  • Security, resilience and privacy in distributed data storage systems.
  • Anti-jamming techniques.
  • Autonomous vehicles and vehicular ad hoc network security.
  • Applications of cryptography.
  • Any other areas of information security as long as they are interesting!
PhD students
  • Amizah Malip (Secure and private annoucement schemes for VANET), completed January 2015.
  • Mwawi Nyirenda Kayuni (Combinatorial properties of frequency hopping sequences), completed November 2017.
  • Chatdanai Dorkson.
Other professional activities


Please email me for copies of any of these which you cannot obtain through the given links. All publications are also available from the Royal Holloway website

... and some unpublished manuscripts

Others things

A collection of Chinese poetry, stories, words and corresponding pictures, for young learners of the language.


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