Dr. Tan is currently a Professor in Information Security with NISlab, Department of Computer Science and Media Technology, Gjovik University College, Norway. He received his B.Sc. (Honours) in Mathematics from the National University of Singapore in 1984, M.A. and Ph.D. degrees in Mathematics from the University of Wisconsin-Madison, USA in 1990 and 1992 respectively. Dr Tan joined Nanyang Technological University, Singapore in September 2000 as an assistant professor and an associate professor in January 2004. Prior to joining NTU, he worked in industry for more than twelve years in Information Security. Dr. Tan has more than sixteen years of working experience in cryptography, wireless communication security, network security and internet security. His working experiences include research, design and development of secure communication systems and secure information system, and projects management. His current research interests include cryptography, cryptanalysis, information security, wireless communication security and security engineering. Dr Tan was also a security consultant to a DigiSafe Pte Ltd, Singapore from January 2001 to July 2005. Furthermore, He was also a Director of the Centre for Information Security at NTU from 1 Apr 2003 to 31 Mar 2005.

Education

o 1992 -- Ph.D. in Mathematics, University of Wisconsin-Madison, USA

o 1990 -- M.A. in Mathematics, University of Wisconsin-Madison, USA

o 1984 -- B.Sc. (Honours) in Mathematics, National University of Singapore, Singapore

 

Research

Cryptography, Cryptanalysis, Wireless Network Security, Security Engineering, Information Security

 

Teaching

IMT 4751 Wireless Communication Security

IMT 4101 Network Security

 

MSc Software Projects in NTU

Public Key Infrastructure

Cardless Online Payment Systems

Secure Online Auction for B2B Commerce

Simulation of Routing and Security Protocols for Ad-Hoc Wireless Networks

Selected Publications:  

2007:  

o         C. H. Tan, C. M. Teo Joseph and Jens-Are Amundsen, "Authenticated Broadcast Encryption Scheme", The Third IEEE International Symposium on Security in Networks and Distributed Systems, part of IEEE 21st International Conference on Advanced Information Networking and its Application, The IEEE Computer Press.

o         C. H. Tan, "Insider-secure Hybrid Signcryption Scheme Without Random Oracles", 1st International Workshop on Advances in Information Security, part of International Conference on Availability, Reliability and Security 2007 (ARES 2007), pp.1148-1154, The IEEE Computer Press, 2007.

o         C. H. Tan and C. M. Teo Joseph, "Protection Against Web-based Password Phishing", Third International Conference on Information Technology: Next Generations (ITNG 2007), pp.754-759, The IEEE Computer Press, 2007.

o         C. M. Teo Joseph, C. H. Tan, and J. M. Ng, "Authenticated Group Key Agreement against DoS in Heterogeneous Wireless Networks", IEEE Wireless Communications and Networking Conference 2007.

2006:  

o         C. M. Teo Joseph, C. H. Tan, and J. M. Ng, "Security Analysis of Provably Secure Constant Round Dynamic Group Key Agreement", IEICE Trans. on Fundamentals, Vol E89-A, no.11, pp.3348-3350, Nov, 2006.

o         T. K. Mandt and C. H. Tan, "Certificateless Authenticated Two-Party Key Agreement Protocols", 11th Annunal Asian Computing Science Conference (ASIAN’06), to appear in Springer-Verlag.

o         C. M. Teo Joseph, C. H. Tan, and J. M. Ng, "Low-Power Authenticated Group Key Agreement for Heterogeneous Wireless Networks", International Journal of Security and Networks, vol. 1, no. 3/4, pp. 226-236, 2006.

o         C. H. Tan, "A New Signature Scheme Without Random Oracles", International Journal of Security and Networks, vol. 1, no. 3/4, pp. 237-242, 2006.

o         C. H. Tan, "Chosen Ciphertext Security from Identity-based Encryption without Strong Condition", Advances in Information and Computer Security -- IWSEC 2006, Lecture Notes in Computer Science, Vol. 4266, pp. 292-307, Springer-Verlag, 2006.

o         C. H. Tan, "On Waters' Signature Scheme", IEICE Trans. on Fundamentals, Vol E89-A, no.10, pp.2684-2685, Oct, 2006.

o         C. H. Tan, "Public Key Encryption from ID-based Encryption without One-time Signature", International Workshop on Information Security, Lecture Notes in Computer Science, Vol. 4277, pp. 450-459, Springer-Verlag, 2006.

o         C. M. Teo Joseph and C. H. Tan, "Authenticated Dynamic Group Key Agreement for Autoconfigurable Mobile Ad Hoc Networks", IEICE Trans. on Communications, Vol E89-B, no.10, pp.2480-2492, Sep, 2006.

o         C. H. Tan, " Analysis of Improved Signcryption Scheme With Key Privacy ", Information Processing Letter, Vol. 99, issue 4, pp.135-138, Aug, 2006. Top 25 Hottest Articles in Information Processing Letters in (Jul - Sep 2006)

o         C. H. Tan, "A Secure Signature Scheme", Internatioanl Wireless Communications and Mobile Computing Conference 2006 (IWCMC 2006), pp.195-199, The ACM Press, 2006.

o         C. M. Teo Joseph, C. H. Tan, and J. M. Ng, "Low-Power Group Key Agreement for Heterogeneous Wireless Networks", Internatioanl Wireless Communications and Mobile Computing Conference 2006 (IWCMC 2006), pp.177-182, The ACM Press, 2006.

o         C. H. Tan and C. M. Teo Joseph, "Energy-Efficient ID-based Group Key Agreement Protocols for Wireless Networks", The International Workshop on Security in Systems and Networks (SSN2006, in conjunction with the 20th IEEE International Parallel and Distributed Processing Symposium (IPDPS 2006).

o         C. H. Tan, "Signature scheme in multi-user setting", IEICE Trans. on Fundamentals, Vol E89-A, no.5, pp.1339-1345, May, 2006.

o         C. H. Tan, "Security Analysis of Signcryption Scheme from q-Diffie-Hellman Problems", IEICE Trans. on Fundamentals, Vol E89-A, no.1, pp.206-208, Jan, 2006.

2005:  

o         C. H. Tan and C. M. Teo Joseph, "Energy Efficient and Scalable Group Key Agreement for Large Ad Hoc Network", The 2nd ACM International Workshop on Performance Evaluation of  Wireless Ad Hoc, Sensor, and Ubiquitous Networks (PE-WASUN 2005), pp.114-121, 2005.

o         C. H. Tan, "On the Security of Signcryption Scheme with Key Privacy", IEICE Trans. on Fundamentals, Vol E88-A, no.4, pp.1093-1095, Apr, 2005.

o         C. H. Tan, “Key Substitution Attacks on Provably Secure Short Signature Schemes”, IEICE Trans. on Fundamentals, Vol E88-A, no.2, pp.661-662, Feb, 2005.

o         C. H. Tan and C. M. Teo Joseph, “An Authenticated Group Key Agreement for Wireless Networks”, IEEE Wireless Communications & Networking Conference 2005, vol 4. pp.2100-2105, 2005.

o         X. Hou and C. H. Tan, “A New Electronic Cash Model”, IEEE International Conference on Information Technology: Coding and Computing – ITCC 2005, pp.374-379, 2005.

2004:  

o         C. H. Tan, X. Yi and C. K. Siew, “On Diffie-Hellman Problems in 3rd Order Shift Register”, IEICE Trans. on Fundamentals, Vol E87-A, no.5, pp.1206-1208, May, 2004.

o         X. Yi, C. H. Tan and E. Okamoto, “Security of Kuwakado-Tanaka Transitive Signature Scheme for Directed Trees”, IEICE Trans. on Fundamentals, Vol E87-A, no.4, pp.955-957, Apr, 2004.

o         X. Hou and C. H. Tan, “Fair Traceable Off-line Electronic Cash in wallets with Observers”, The 6th International Conference on Advance Communication Technology 2004, pp.595-599, 2004.

o         C. H. Tan, "Key Substitution Attacks on Some Provably Secure Signature Schemes”, IEICE Trans. on Fundamentals, Vol E87-A, no.1, pp. 226-227, Jan, 2004. Cited in IJIS, vol 5, no.1, 2006

2003:  

o         C. H. Tan, X. Yi and C. K. Siew, “Signature Scheme based on Composite Discrete Logarithm”, The Fourth International Conference on Information, Communications & Signal Processing and Fourth Pacific-Rim Conference on Multimedia (ICICS-PCM 2003), December, 2003.

o         C. H. Tan, X. Yi and C. K. Siew, "A New Provably Secure Signature Scheme", Vol E86-A, no.10, pp. 2633-2635, Oct, 2003.

o         C. H. Tan, X. Yi and C. K. Siew, "A CCA2 Secure Key Encapsulation Scheme Based on 3rd Order Shift Registers", The 8th Australasian Conference on Information and Privacy - ACISP'03, July, 2003.

o         C. H. Tan, X. Yi and C. K. Siew, "On the n-th Order Shift Register based Discrete Logarithm", IEICE Trans. on Fundamentals, Vol E86-A, no.5, pp. 1213-1216, 2003. Cited in SETA 2004

o         X. Yi, C. K. Siew and C. H. Tan, "A Secure and Efficient Conference Scheme for Mobile Communications", IEEE Trans. on Vehicular Technology, Vol 52, No.4, pp. 784-793, July, 2003.

o         X. Yi, C. K. Siew, C. H. Tan and Y. Ye "A Secure Conference Scheme For Mobile Communications", IEEE Trans. on Wireless Communications, Vol. 2, no.6, pp. 1168-1177, Nov, 2003.

2002:  

o         X. Yi, C. H. Tan and C. K. Siew, "A New Block Cipher Based on Chaotic Tent Map", IEEE Trans. on Circuits and Systems Part I, Vol 49, no.12, pp. 1826-1829, Dec, 2002.

o         C. H. Tan, X. Yi and C. K. Siew, "Computation of Signature Schemes Based On 3rd Order Shift Registers", The International Conference on Fundamentals of Electronics, Communications and Computer Sciences, Tokyo, Japan, March, 2002.

o         X. Yi, C. H. Tan, C. K. Siew and E. Okamoto, "A New Encryption Scheme Based On Discrete Logarithm Problem", The International Conference on Fundamentals of Electronics, Communications and Computer Sciences, Tokyo, Japan, March, 2002.

o         C. H. Tan, X. Yi and C. K. Siew, "New Signature Schemes Based On 3rd Order Shift Registers", IEICE Trans. on Fundamentals, Vol E85-A, no.1, pp. 102-109, 2002.

o         X. Yi, C. H. Tan and C. K. Siew, "ID-Based Key Agreement for Multimedia Encryption", IEEE Trans. on Consumer Electronics, vol. 48, no.2, pp. 298-303, 2002.

-- 2001:  

o        X.Yi, C. H. Tan, C. K. Siew and Y. Ye, "A New Group Signature Scheme", in Proceedings of 3rd WSEAS Symposium on Mathematical Methods and Computational Techniques in Electrical Engineering", Athens, Greece, Dec 2001.

o       X. Yi, C. H. Tan and C. K. Siew, "A New Authenticated Key Agreement", The Third International Conference on Information, Communication & Signal Processing (ICICS 2001), Singapore, October, 2001.

o       C. H. Tan, X. Yi and C. K. Siew, "Secured Wireless LAN - IEEE 802.11", The Third International Conference on Information, Communication & Signal Processing (ICICS 2001), Singapore, October, 2001.

o       C. H. Tan, X. Yi and C. K. Siew, "Signature Schemes Based On 3rd Order Shift Registers", in : Proc. of The 6th Australasian Conference on Information and Privacy, Lecture Notes in Computer Science 2119, Springer, 2001, pp 445-459.

o       X. Yi, C. H. Tan, C. K. Siew, "Fast Encryption for Multimedia", IEEE Trans. on Consumer Electronics, vol. 47, no.1, pp.101-107, 2001.

o       C. H. Tan, X. Yi and C. K. Siew, "Efficient Construction of Irreducible and Primitive Polynomials over Finite Fields", The 6th International Conference on Finite Fields and Its Applications, Oaxaca, Mexico, May, 2001.

o       X. Yi, C. H. Tan, C. K. Siew and M.R. Syed, "A New Encryption Algorithm for High Throughput Multimedia", 2001 Information Resources Management Association International Conference, Canada, May 20-23, 2001.

o       C. H. Tan, "Period and linear complexity of cascaded clocked-controlled generators," in Sequences and Their Applications - Proceedings of SETA'98, Discrete Mathematics and Theoretical Computer Science, Springer, 1999, pp 371-378.

o       C. H. Tan, "Codes in affine matrix schemes", PhD Thesis, 1992.

 

Last update : 22/09/07