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Hitesh Tewari
Assistant Professor, Computer Science

Biography

Hitesh Tewari received his BA(Mod), MSc and PhD degrees from Trinity College Dublin, Ireland. He joined Trinity College as a lecturer in Computer Science 1997. His research interests are in the reas of computer networks, electronic commerce, network security and mobile communications technologies. He has published a number of important papers in the area of mobile communications and has co-authored a book on Electronic Payments which is currently in its second edition.

Publications and Further Research Outputs

Peer-Reviewed Publications

Hitesh Tewari and Eamonn ONuallain, Netcoin - A Traceable P2P Electronic Cash System, IEEE ICWS, New York, 27th June 2015, 2015 Conference Paper, 2015 TARA - Full Text DOI

Clear, Michael; Tewari, Hitesh; Mc Goldrick, Ciaran, Anonymous IBE from Quadratic Residuosity with Improved Performance, Progress in Cryptology - AFRICACRYPT 2014, edited by Hutchison, D., Kanade, T., Kittler, J., Kleinberg, J.M., Kobsa, A., Mattern, F., Mitchell, J.C., Naor, M., Nierstrasz, O., Pandu Rangan, C., Steffen, B., Terzopoulos, D., Tygar, D., Weikum, G , Springer International Publishing, 2014, pp377 - 397 Conference Paper, 2014 DOI

Michael Clear, Karl Reid, Desmond Ennis, Arthur Hughes and Hitesh Tewari, Collaboration-Preserving Authenticated Encryption for Operational Transformation Systems, Lecture Notes in Computer Science, Information Security Conference (ISC 2012), Passau, Germany, 19th Sep 2012, edited by Dieter Gollmann, Felix C. Freiling , 7483, Springer Berlin Heidelberg, 2012, pp204 - 223 Conference Paper, 2012 URL TARA - Full Text DOI

Efficient Quantum-Resistant Identity Based Cryptography in, editor(s)Jim, Barry et.al , The Undergraduate Journal of Ireland & Northern Ireland, Ireland, 2011, pp93 - 153, [Clear, M] Book Chapter, 2011

Tewari, H. et.al, System and Apparatus for Securely Storing Data, 2011, UK Patent Application - Serial No. 1117275.6 Patent, 2011

Tewari, H and Ennis, D., A Data Retrieval System, 2010, US Patent Application - Serial No 12/690,465 Patent, 2010

Tewari, H., Dennehy, M., Kenny, W., Cagney, A. and Howley, S, An Authorization Method and System for Wireless Networks using Subscriber Identity Module Based Information, 2010, UK Patent Application - Serial No. RL/LJR/31947/GBP Patent, 2010

Ioanna Stamouli, Patroklos Argyroudis and Hitesh Tewari,, Real-time Intrusion Detection for Ad hoc Networks, Proceedings of 6th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks, WOWMOM'05, Taormina, Italy, June 2005, IEEE, 2005, pp374 - 380 Conference Paper, 2005 TARA - Full Text DOI

Stamouli, I, Argyroudis, P. and Tewari, H.(ed.), Proceedings of the 6th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM), Taormina, Italy, 4-16 June, 2005, 374-380 p Proceedings of a Conference, 2005

Argyroudis, P. and Verma, R. and Tewari, H. and O'Mahony, D., Performance analysis of cryptographic protocols on handheld devices, Proceedings of the Third IEEE International Symposium Network Computing and Applications, 2004. (NCA 2004). , Third IEEE International Symposium Network Computing and Applications, 2004. (NCA 2004). , Cambridge, MA, Aug 30 - Sept 1 2004, IEEE, 2004, pp169-174 Conference Paper, 2004 URL TARA - Full Text DOI

Argyroudis, P., Verma, R., Tewari, H. & O'Mahony, D., Performance Analysis of Cryptographic Protocols on Handheld Devices, Proceedings of 3rd IEEE International Symposium on Network Computing and Applications, Cambridge, MA, Aug 30 - Sept 1, 2004, pp169 - 174 Conference Paper, 2004 DOI

Tewari, H., O'Mahony, D., Real-time payments for mobile IP, IEEE Communications, 41, (2), 2003, p126 - 136 Journal Article, 2003 TARA - Full Text URL DOI

Verma, R., O'Mahony, D. & Tewari, H., Progressive Authentication in Ad Hoc Networks, Proceedings of The Fifth European Wireless Conference, Barcelona, Spain, Feb 24-27, 2003 Conference Paper, 2003 URL

Verma, R., Tewari, H., O'Mahony, D., Wanderer: Secure Group Formation and Communication in Ad Hoc Networks, Proceedings of the 2nd Joint IEI/IEE Telecommunications Systems Research Symposium, Dublin, May 6th, 2003 Conference Paper, 2003

Tewari, H. and O'Mahony, D., Real-Time Payments for Mobile IP, IEEE Communications, 41, (2), 2003, p126 - 136 Journal Article, 2003 DOI

Tewari H. and O'Mahony D., Multiparty micropayments for ad hoc networks, Proceedings of the IEEE Wireless Communications and Networking Conference (WCNC) 2003, New Orleans, Louisiana, March 20, 3, 2003, pp2033 - 2040 Conference Paper, 2003 URL DOI URL TARA - Full Text

Flynn, J., Tewari, H. and O'Mahony, D., A Real-Time Emulation System for Ad Hoc Networks, Proceedings of the Communication Networks and Distributed Systems Modeling and Simulation Conference (CNDS 2002), San Antonio, Texas, January 27-31, 2002, pp115 - 120 Conference Paper, 2002 URL

Tewari, H. and O'Mahony, D., Lightweight AAA for Cellular IP, Proceedings of European Wireless 2002, Florence, Italy, February 25-28, 2002, pp301 - 306 Conference Paper, 2002 URL

Verma, R., O'Mahony, D. and Tewari, H., NTM- Progressive Trust Negotiation in Ad Hoc Networks, Proceedings of the First Joint IEI/IEE Symposium on Telecommunications Systems Research, Dublin, November 27th, 2001, pp8 Conference Paper, 2001 URL

Flynn, J., Tewari, H. and O'Mahony, D., Jemu: A Wireless Network Emulator for Mobile Ad Hoc Networks, Proceedings of the First Joint IEI/IEE Symposium on Telecommunications Systems Research, Dublin, November 27th, 2001, pp6 Conference Paper, 2001 URL

O'Mahony, D., Doyle, L., Tewari, H. and Peirce, M., NOMAD - An Application to Provide UMTS Telephony Services on Fixed Terminals in COBUCO, Proceedings of the 3rd ACTS Mobile Communications Summit, Rhodes, Greece, June 8th-10th, 1998, pp72 - 76 Conference Paper, 1998 URL

Hitesh Tewari, Maurice McCourt and Donal O'Mahony, Advanced electronic commerce security in a workflow environment , LECTURE NOTES IN COMPUTER SCIENCE, 1028, 1996, p69 - 85 Journal Article, 1996 URL DOI

Non-Peer-Reviewed Publications

O'Mahony, D., Peirce, M., Tewari, H., Electronic Payment Systems for E-Commerce, 2nd Edition, Norwood, MA., Artech House, 2001, 342pp Book, 2001

O'Mahony, D., Peirce, M. and Tewari, H., Electronic Payment Systems, 1st Edition, Boston, Artech House, 1997, 250pp Book, 1997

Advanced Electronic Commerce Security in a Workflow Environment in, editor(s)Adam, N.R. and Yesha, Y. , Electronic Commerce: Current Research Issues and Applications, Berlin, Springer Verlag, 1996, pp69 - 85, [Tewari, H., McCourt, M., O'Mahony, D.] Book Chapter, 1996

Research Expertise

Description

Network and Telecommunications Services, Security and Mobility

Projects

  • Title
    • CipherDocs - Secure Cloud Documents
  • Summary
    • Enterprise Ireland invited us for a second round of funding in order to assemble a commercial team and further develop the Google Docs and Office 365 offering of CipherDocs. The aim of this round of funding is to try spin out a commercial entity.
  • Funding Agency
    • Enterprise Ireland
  • Date From
    • 15/10/2012
  • Date To
    • 14/10/2013
  • Title
    • CipherDocs
  • Summary
    • The CipherDocs technology that allows a user to seamlessly encrypt their cloud documents. One of the immediate applications for cloud computing is software as a service, whereby companies are looking to hosted services as a means of reducing their operational expenditure. However an important drawback is that users are required to delegate trust of their data to third parties. The CipherDocs browser plug-in makes use of a number of novel cryptographic techniques to encrypt in real-time user data that is being transmitted to the cloud.
  • Funding Agency
    • Enterprise Ireland
  • Date From
    • 01/08/2011
  • Date To
    • 31/07/2012
  • Title
    • Quantum Resistant Cryptographic Techniques
  • Summary
    • The project aims to investigate both public-key encryption schemes and signature schemes based on mathematical primitives that facilitate highly-efficient implementation, are resistant to quantum cryptanalysis, and can be formally proved secure in the standard model.
  • Funding Agency
    • IRCSET
  • Date From
    • 01/09/2010
  • Date To
    • 31/08/2013
  • Title
    • eaziPass
  • Summary
    • NDRC sponsored project to commercialize research carried out in the areas of Personal Identity Management (PIM) and secure Cloud Computing. The project aims to leverage the ubiquitous mobile phone to securely store and distribute authentication data and encryption keys while transacting online.
  • Funding Agency
    • NDRC
  • Date From
    • 09/03/2010
  • Date To
    • 80/09/2010
  • Title
    • Pay-As-You-Go for Next Generation Mobile Networks
  • Summary
    • As part of this project we aim to develop a highly flexible and scalable electronic payment infrastructure that will allow a user to pay any WISP and subsequently a VoIP provider of his choosing without the need for long-lived trust and billing relationships with them. The WISP and VoIP provider will be paid in "real-time" for service provision and will be guaranteed payment once they have signed up to accept tokens from a payment broker. For the purposes of this proposal, we shall call the payment tokens "Metakoins" that can represent a quantum of time or money depending on the deployment scenario. The micropayment technology employed in this project makes use of a one-way hash function. The use of lightweight cryptographically protected micropayment tokens means that we can pay the WISP and VoIP provider for very short access periods e.g. a few minutes. Also, the use of micropayments eliminates the need for Call Detail Records (CDRs) to be generated and exchanged between the various entities in the system. This greatly reduces the possibility of dispute between the various parties post service provision, as the payment tokens can only be generated by the mobile users device, and once released to the operator or service provider act as a payment guarantee. This proposal will endeavour to deliver an electronic payment infrastructure that will spur the growth of independent network operators and service providers. This in turn will give end users greater roaming capabilities and choice of WISPs and VoIP providers. In terms of existing operators and service providers it will bring in new customers and increase their revenue streams. Our solution will enhance the user experience by simplifying the overall payment process. A user will be able to load his mobile device with prepaid tokens and pay all parties involved in the call using a single payment method (as is the case in cellular networks today) with the added ability to choose his WISP and VoIP provider independently based on criteria such as cost and quality of service.
  • Funding Agency
    • Enterprise Ireland
  • Date From
    • 01/05/07
  • Date To
    • 30/04/09
  • Title
    • Pay-As-You-Go for Next Generation Mobile Networks
  • Summary
    • With the advent of low-cost wireless hardware (e.g. Wi-Fi and WiMax), anyone with the right equipment and a high-speed connection to the Internet has the ability to establish a low-cost, independent pico- or microcellular network. These next-generation operators will provide high-speed network Internet access to large numbers of roaming mobile users and will be required to generate revenue for services rendered. However traditional telecoms based accounting and billing solutions will not be suitable in such dynamic environments. This proposal aims to implement a prototype electronic payment infrastructure that will allow next-generation mobile network operators to be paid in "real time" for service provision to roaming mobile users, without the need for long-lived trust and billing relationships with such users.
  • Funding Agency
    • Enterprise Ireland
  • Date From
    • 01/05/06
  • Date To
    • 31/04/07

Keywords

Computer Networks; Cryptography; Electronic Commerce; Local Area Networks; MOBILE COMMUNICATION; NETWORK SECURITY; Telecommunications Research