Dr. (Mrs) G.S. Wijesiri

Computational Algebraic Geometry

Elliptic curves and Cryptography

Coding Theory

P.A.S.D. Perera, G.S. Wijesiri, Encryption and Decryption Algorithms in Symmetric Key Cryptography Using Graph Theory, Psychology and Education Journal, Vol. 58 No 1(2021), 3420-3427.

W.W.P.M.T.M. Karunasena,  G.S. Wijesiri, Application of Graph Theory in DNA similarity analysis of Evolutionary Closed Species, Psychology and Education Journal, Vol. 58 No 1(2021), 3428-3434.

P.A.S.D. Perera, G.S. Wijesiri, Encryption Algorithms using Graph Theory in Symmetric Cryptography for providing better Data Security, Postgraduate Institute of Science Research Congress, University of Peradeniya, 2020, Page no.107

W.W.P.M.T.M. Karunasena,  G.S. Wijesiri, A Study of DNA Similarity Analysis in Evolutionary relationship using Graph Theory, Postgraduate Institute of Science Research Congress, University of Peradeniya, 2020, Page no 108

Kavirathne S.D., Wijesiri G.S., Optimal Performable Green Light Assignment of a Traffic Intersection using Maximal Independent Independent Vector Set of a Graph, Proceedings of the 12th International Research Conference of Kothalawala Defence University, Sri Lanka, 2019.

Kavirathne S.D., Wijesiri G.S., Optimal Feasible Green Light Assignment to a Traffic Intersection using Graph theory, Asia International Conference on Multidisciplinary Research, 2019.

Nisansala A., Wijesiri G.S., Scalar and Multi-Scalar Addition chain in Elliptic curve cryptography, ICACT 2019, Faculty of Computing & Technology, University of Kelaniya, Sri Lanka.

Sandamali N.P.A.A., Wijesiri G.S., Scalar and multi-scalar multiplication in Elliptic Curve Cryptography using Fibonacci numbers, International Research Symposium on Pure and Applied Sciences, 2018, Faculty of Science, University of Kelaniya, Kelaniya, Sri Lanka, 2018.

Karunathilaka N.G.A., Panda S., Mallawaarachchi D.K., Wijesiri, G.S., Hansameenu W.T.P., Modeling Non-Isothermal wire-coating from a bath using Giesekus fluid, International Research Symposium on Pure and Applied Sciences, 2017, Faculty of Science, University of Kelaniya, Kelaniya, Sri Lanka, 2017.

Kolombage K.A.D.D.B.V, Wijesiri G.S., An investigation of properties of prime graph of non-commutative rings, Annual Session of SLAAS 2017.

 Kolombage K.A.D.D.B.V, Wijesiri G.S., The chromatic number of prime graph of a noncommutative ring Mn×n (Ζ2), International Research Symposium on Pure and Applied Sciences, 2016, Faculty of Science, University of Kelaniya, Kelaniya, Sri Lanka, 2016.

 Perera P.S.L., Wijesiri G.S., A masking method for resisting key attacks on AES, International Research Symposium on Pure and Applied Sciences, 2016, Faculty of Science, University of Kelaniya, Kelaniya, Sri Lanka, 2016.

 G. Wijesiri, Thetanulls of cyclic curves of genus 4, Annual research symposium, FGS, University of Kelaniya, Kelaniya,2013

 T. Shaska, C. Shor, G. S. Wijesiri,  Codes over rings of size p2 and lattices over imaginary quadratic fields,  Finite Fields Appl. 16 (2010) no. 2, 75--87.

E. Previato, T. Shaska, G. wijesiri, Theta nulls of cyclic curves with automorphisms, Algebraic aspects of digital communications, NATO Sci. Peace Secur. Ser. D. Inf. Commun. Secur., 24, IOS, Amsterdam, 2009, 193-237

T. Shaska, G. S. Wijesiri, S. Wolf, L. Woodland, Degree 4 coverings of elliptic curves by genus 2, Albanian J. Math. Vol.2, (2008), No. 4, 307-318.

T. Shaska, G. Wijesiri, Codes over rings of size four, Hermitian lattices and corresponding theta functions, Proc. Amer.Mathe. Soc., 136 (2008), no.3, 849-857.

E. Previato, T. Shaska, G. s. Wijesiri, Theta nulls of cyclic curves of small genus, Albanian J. Math. Vol. 1, No. 4, 2007, 253-270.

Optimal Feasible Green Light Assignment to a Traffic Intersection using Graph Theory with S.D. Kavirathne

Attacks on Elliptic Curve Cryptography with W.V.A. Nisansala

Webmaster of the Department of Mathematics, University of Kelaniya 2013 – present

Student counselor of Faculty of Science 2012 – present

Member, Committee for A Platform for Quality Development of Mathematics Education, Ministry of Education

Chief Marking Examiner for GCE(A/L) Combined Mathematics in 2012, 2013, 2014, 2015, 2017, 2018.

Member of the Editorial Board and Organization Committee of the International Research Symposium on Pure and Applied Sciences – 2016.

Member of the Editorial Board of the International Research Symposium on Pure and Applied Sciences – 2018.

Recourse person for GCE(A/L) teacher training program conducted by National Institute of Education in 2015.

Visiting Lecture at Faculty of Computing & Technology, University of Kelaniya, 2016/2017, 2015/2016.

The paper setter Year1/Semester 1 and 2, Faculty of Computing &Technology.

Visiting lecturer at Gampaha Wickramarachchi Ayurveda Institute, University of Kelaniya, 2013.

Visiting Lecturer at Sri Lanka Air Force Academy, Trincomalee.

Recourse person to develop syllabus of the Bachelor of Engineering technology Degree Program at the Faculty of Computing & Technology, University of Kelaniya.

Department Academic Advisor since 2017.