RESEARCH INTEREST CRYPTOLOGY - Analysis and Design of Block Ciphers - linear and differential analysis, algebraic analysis, SP networks, key scheduling,
- Stream Ciphers - algebraic analysis, linear masking, distinguishing attacks,
- Public-Key Cryptography - signcryption, parallel authenticated encryption, security of RSA,
- Multiparty Computations - secure computations in non-Abelian groups
- Hashing Algorithms - differential analysis, generic attacks, domain extenders, sibling intractable hashing, provably secure hashing, analysis of the SL2 hash, keyed hashing, analysis of SHA256, finding differential patterns, higher order universal one-way hash functions,
- Digital Signatures - proxy signatures, batch signature verification, multiple-time signatures, one-time proxy signatures, universal designated-verifier signatures,
- Key Distribution - key agreements, key management in multicast groups, malleability attacks on key agreements,
- Threshold Cryptography - cryptography in hierarchical groups, threshold fail-stop signatures, shared generation of pseudorandom functions,
- Secret Sharing - perfect and ideal secret sharing, threshold changeable secret sharing, verifiable secret sharing, cheating prevention and detection, cheating immune secret sharing, cumulative arrays, secret sharing in hierarchical groups, divisibility of shares, lattice-based threshold changeable Shamir and CRT secret sharing, multi-secret secret sharing,
- S-box Theory - non-linearity of power permutations, linear non-equivalence, homogeneous bent Boolean functions, constructions of cubic homogeneous Boolean bent functions, algebraic resiliency and immunity,
- Pseudorandomness - pseudorandom bit generators, pseudorandom function and permutation generators, one-way functions,
- Authentications - authentication codes, Latin squares,
- Quantum Cryptography
COMPUTER SECURITY - Database Security - access authorization in Object-Oriented databases, cryptographic mechanisms for authorization, multilevel security, discretionary access control,
- Intrusion Detection Systems - anomaly detection, misuse intrusion detections, Dempster-Shafer theory, host and network intrusion detection, honey pots,
- Copyright Protection - software fingerprints, watermarking schemes,
- E-Commerce - e-voting schemes, e-cheques, payment systems, micro-payments,
- E-Government - user identification, biometrics,
EDITORIAL BOARDS GRANTS (from 2000) - DP0663452 Australian Research Council, Discovery, Algebraic Properties of Cryptographic Components and their Cryptanalysis, J. Pieprzyk, C. Charnes, S. McCallum, 2006-2008, $351,000
- DP0451484 Australian Research Council, Discovery, Algebraic models of stream ciphers, J. Pieprzyk, 2004-2006, $210,000
- LP0453790 Australian Research Council, Linkage, Algebraic methods in design and analysis of stream ciphers, J. Pieprzyk, G. Rose, P. Hawkes, 2004-2006, $23,556 per year
- LP0349183 Australian Research Council, Linkage, Audit Security Models for Multiparty Internet Transactions, J. Seruga, J. Pieprzyk, J. Fick, 2003-2006, $69,099
- DP0345366 Australian Research Council, Discovery, Algebraic Analysis of Cryptosystems, J. Pieprzyk, H. Wang, 2003-2005, $225,000 (80K,75K,70K)
- Macquarie University, Innovation Fund, Quantum Algorithms and Quantum Information Processing,B. Mans, J. Pieprzyk, B. Sanders, I. Shparlinski, 2003-2005, $240,000
- A00103078 Australian Research Council, ARC Large, Secure Multi-Party Collaboration, J. Pieprzyk, 2001-2003, $159,000
- C00106572 Australian Research Council, SPIRT, Internet Electronic Voting Protocols, J. Pieprzyk, 2001-2003, $388,000
- Nortel Networks (Boston, US), Mobility impact on secure web-based voting applications, J. Pieprzyk, T. Hardjono, July - December 2000, $35,000
- ARC Small, Fast hashing algorithms, J. Pieprzyk, 2000, $10,000
- Nortel Networks (Boston, US), Secure Web-Based Voting Applications, J. Pieprzyk, October 1999 -- June 2000, $30,000
SELECTED PUBLICATIONS FROM 2000 Books - Josef Pieprzyk, Thomas Hardjono, Jennifer Seberry, Fundamentals of Computer Security, Springer, 2003
Edited Books - Huaxiong Wang, Josef Pieprzyk, Vijay Varadharajan, Lecture Notes in Computer Science, Vol. 3108, Information Security and Privacy, Proceedings of 9th Australasian Conference, ACISP 2004, Sydney, Australia, July 2004, Proceedings, 2004
- J. Pieprzyk, E. Okamoto, J. Seberry, Lecture Notes in Computer Science, Vol. 1975, Proceedings of the 3-rd International Workshop on Information Security, ISW2000, Wollongong, NSW, Australia, December 2000, Springer-Verlag, 2000
Chapters in Books - Josef Pieprzyk, Multimedia Copyright Protection, Design Management of Multimedia Information Systems: Opportunities and Challenges, Syed Rahman (Ed), IDEA Group Publishing, pages 435--451, 2001
Refereed Journal Papers - Shoulun Long, Josef Pieprzyk, Huaxiong Wang, Duncan Wong, Generalised Cumulative Arrays in Secret Sharing, Designs, Codes and Cryptography, Vol. 40, No. 2, August 2006
- Josef Pieprzyk, Xianmo Zhang, Ideal Secret Sharing Schemes from Permutations, International Journal of Network Security, Vol.2, No.3, 2006, pp. 238-244
- Ron Steinfeld, Josef Pieprzyk, Huaxiong Wang, Lattice-based threshold changeability for standard CRT secret sharting schemes, Finite Fields and Their Applications, Elsevier, 2005 (accepted April 21, 2005)
- Josef Pieprzyk, Xianmo Zhang, Characterisations of Ideal Threshold Schemes, Journal of Descrete Mathematics and Theoretical Computer Science (DMTCS), Vol.6, No.2, 2004, pp.471-482, ( www.dmtcs.org )
- Tiangbing Xia, Jennifer Seberry, Josef Pieprzyk, Chris Charnes, Homogenous bent functions of degree n in 2n variables do not exist for n>3, Discrete Applied Mathematics, 2004, Vol 142/1-3, pp.127-132
- Josef Pieprzyk, Xianmo Zhang, On Cheating Immune Secret Sharing, Journal of Descrete Mathematics and Theoretical Computer Science (DMTCS), Vol.6, No.2, 2004, pp.253--264, (www.dmtcs.org)
- Huaxiong Wang, Josef Pieprzyk, Shared generation of pseudo-random functions, Journal of Complexity, Vol 20, 2004, pp.458-472
- Josef Pieprzyk, Xianmo Zhang, Multisecret Sharing Immune against Cheating, Informatica, Volumne 26, Number 3, November 2002, 271-278
- Soroush Sedaghat, Josef Pieprzyk, Ehsan Vossough, On-the-fly web content integrity check boosts users' confidence, Communications of the ACM, November 2002, Vol. 45, No. 11, pp.33-37
- Josef Pieprzyk, Jarek Pastuszak, Identification of bad signatures, Telekomunikacja i Techniki Informacyjne, No.2, 2001, pp.46--61 (in Polish)
- Yvo Desmedt, Rei Safavi-Naini, HuaxiongWang, Lynn Batten, Chris Charnes, Josef Pieprzyk, Broadcast anti-jamming systems, Computer Networks, Vol. 35, No. 2-3, February 2001, pp. 223-236
- Jennifer Seberry, Tiang Xia, Josef Pieprzyk, Construction of cubic homogeneous Boolean bent functions, The Australasian Journal of Combinatorics, Vol. 22, 2000, pp. 233-245
- Josef Pieprzyk, Chih-Hung Li, Multiparty key agreement protocols, IEE Proceedings, Computers and Digital Techniques, Vol.147, No. 4, July 2000, pp. 229-236
- Chengxin Qu, Jennifer Seberry, Josef Pieprzyk, Homogeneous bent functions, Discrete Applied Mathematics, vol. 102, 2000, pp.133--139
Refereed Conference Proceedings - LNCS - Ron Steinfeld, Josef Pieprzyk, Huaxiong Wang, Higher Order Universal One-way Hash Functions from the Subset Sum Assumption, PKC 2006 (accepted January 25, 2006)
- Krystian Matusiewicz, Josef Pieprzyk, Finding good differential patterns for attacks on SHA-1, Proc. International Workshop on Coding and Cryptography, WCC'2005, March 14-18, 2005, Bergen, Norway, to be published in LNCS, (also available at: IACR Cryptology ePrint Archive, report 2004/364) (accepted January 2005)
- Krystian Matusiewicz, Josef Pieprzyk, N. Pramstaller, Ch. Rechberger, Vincent Rijmen, Analysis of simplified variants of SHA-256, Proc. Western Europen Workshop on Research in Cryptology, WeWoRC'2005, July 5-7, 2005, Leuven, Belgium, to appear in Lecture Notes in Computer Science (accepted March 2005)
- Josef Pieprzyk, Xianmo Zhang, Jovan Golic, Characterizations of Extended Resiliency and Extended Immunity of S-boxes, Lecture Notes in Computer Science 3935, D. Won and S. Kim (Eds), The 8th International Conference on Information Security and Cryptology, ICISC 2005, December 1-2, 2005, Korea, Springer 2006, pp.210-228
- Ron Steinfeld, Scott Contini, Josef Pieprzyk, Huaxiong Wang, Converse result to the Wiener attack on RSA, Lecture Notes in Computer Science, Proceedings of PKC 2005, Springer, 2005, pp.184-198
- Ron Steinfeld, Huaxiong Wang, Josef Pieprzyk, Efficient Extension of Standard Schorr/RSA Signatures into Universal Designated-Verifier Signatures, Lecture Notes in Computer Science 2947, F. Bao, R. Deng, and J. Zhou (Eds.), Public Key Cryptography - PKC 2004, 7th International Workshop on Theory and Practice in Public Key Cryptography, Singapore, March 2004, Springer, 2004, pp.86-100
- Hartono Kurnio, Huaxiong Wang, Josef Pieprzyk, Krys Gaj, Securing multicast groups in ad hoc networks, Lecture Notes in Computer Science 3309, C-H. Chi and K-Y Lam (Eds), Content Computing - AWCC2004, Advanced Workshop on Content Computing, ZhenJiang, JiangSu, China, November 2004, pp.194-207
- Ron Steinfeld, Huaxiong Wang, Josef Pieprzyk Lattice-based threshold-changeability for standard Shamir secret sharing schemes, Lecture Notes in Computer Science 3329, P.J. Lee (Ed), 10th International Conference on the Theory and Application of Cryptology and Information Security, Jeju Island, Korea, December 2004, Springer, 2004, pp.170-186
- Joe Cho, Josef Pieprzyk, Algebraic attacks on SOBER-t32 and SOBER-t16 without stuttering, Lecture Notes in Computer Science 3017, B. Roy and W. Meier (Eds), Fast Software Encryption, Delhi, India, February, 2004, Springer 2004, pp.49-64
- Huaxiong Wang Josef Pieprzyk, Shared generation of pseudo-random function with cumulative maps, Lecture Notes in Computer Science, Vol. 2612, M. Joye (Eds), Cryptographers' Track RSA Conference, San Francisco, USA, Proceedings, Springer, 2003, pp. 281-294
- Huaxiong Wang, Josef Pieprzyk, Efficient one-time proxy signatures, Lecture Notes in Computer Science, Advances in Cryptology - Asiacrypt 2003, Chi Sung Laih (Ed), 9th International Conference on the Theory and Application of Cryptology and Information Security, Taipei, Taiwan, November/December 2003, Springer, pp.507-522
- Ron Steinfeld, Lawrence Bull, Huaxiong Wang, Josef Pieprzyk, Universal designated-verifier signatures, Lecture Notes in Computer Science, Advances in Cryptology - Asiacrypt 2003, Chi Sung Laih (Ed), 9th International Conference on the Theory and Application of Cryptology and Information Security, Taipei, Taiwan, November/December 2003, Springer, pp.523-54
- Keith Martin, Josef Pieprzyk, Rei Safavi-Naini, Huaxiong Wang, Peter Wild, Threshold MAC's, Lecture Notes in Computer Science, Vol. 2587, P.J. Lee and C.H. LIm (Eds), Information Security and Cryptology - ICISC 2002, 5th International Conference Seoul, Korea, November 2002, Proceedings, Springer, 2003, pp.237-252
- JosefPieprzyk, Xianmo Zhang, Ideal threshold schemes from MDS codes, Lecture Notes in Computer Science, Vol. 2587, P.J. Lee and C.H. LIm (Eds), Information Security and Cryptology - ICISC 2002, 5th International Conference Seoul, Korea, November 2002, Proceedings, Springer, 2003, pp.253-263
- Josef Pieprzyk, David Pointcheval, Parallel authentication and public-key encryption, Lecture Notes in Computer Science, Vol. 2727, R. Safavi-Naini and J. Seberry (Eds), 8th Australasian Confrence, ACISP2003, Wollongong, Australia, July 2003, Proceedings, Springer, 2003, pp.387-401
- Josef Pieprzyk Huaxiong Wang, C. Xing, Multiple-Time Signature Schemes Secure against Adaptive Chosen Message Attacks, Lecture Notes in Computer Science, Vol. 2006, M. Matsui, R. Zuccherato (Eds), 10th Workshop on Selected Areas in Cryptography (SAC'03), August 14 -15, 2003, Ottawa, Canada, Springer 2004, pp.88-100
- Huaxiong Wang, Josef Pieprzyk, A combinatorial approach to anonymous membership broadcast, Lecture Notes in Computer Science, Vol. 2387, O. Ibarra, L. Zhang (Eds), 8th Annual International Conference, COCOON 2002, Singapore, August 2002, pp.162-170
- Josef Pieprzyk, Xianmo Zhang, Ideal threshold schemes from orthogonal arrays, Lecture Notes in Computer Science, Vol. 2513, R. Deng, S. Qing, F. Bao, and J. Zhou (Eds), Information and Communications Security, 4th International Conference, ICICS 2002, Singapore, December 2002, Proceedings, Springer, pp.469-479
- Nicolas Courtois, Josef Pieprzyk, Cryptanalysis of block ciphers with overdefined systems of equations. Lecture Notes in Computer Science, Vol. 2501, Y. Zhang (Ed), Asiacrypt 2002, 8th International Conference on the Theory and Applications of Cryptology and Information Security, Queenstown, New Zealand, December 2002, Proceedings, Springer, pp. 267-287
- Mohamed Al-Ibrahim, Hossein Ghodosi, Josef Pieprzyk, Authentication of concast communication, Lecture Notes in Computer Science, Vol. 2551, A. Menezes and P. Sarkar (Eds), Progress in Cryptology - INDOCRYPT 2002, Third International Conference on Cryptology in India Hyderabad, India, December, 2002, Proceedings, Springer, pp. 185-196
- Josef Pieprzyk, Xianmo Zhang, Cheating prevention in linear secret sharing, Lecture Notes in Computer Science, Vol. 2384, L. Batten, J. Seberry (Eds), Information Security and Privacy, 7th Australasian Conference, ACISP2002, Melbourne, Australia, July 2002, pp.121-135
- Hossein Ghodosi, Josef Pieprzyk, Democratic systems, Lecture Notes in Computer Science, Vol. 2119, V. Varadharajan and Y. Mu (Eds), 6th Australasian Conference, ACISP2001, Sydney, Australia, July 2001, pp.392-402
- Mohamed Al-Ibrahim, Josef Pieprzyk, Authenticating multicast streams in lossy channels using threshold techniques, Lecture Notes in Computer Science, Vol. 2094, P. Lorenz (Ed), Network - ICN2001, First International Conference, Calmer, France, July 9-13, 2001, pp.239-249
- Xianmo Zhang, Josef Pieprzyk, Cheating immune secret sharing, Lecture Notes in Computer Science, Vol. 2229, S. Qing, T. Okamoto, J. Zhou (Eds), Information and Communication Security, Third International Conference, ICICS 2001, Xian, China, November 2001, pp.144-149
- Jarek Pastuszak, Dariusz Michalek, Josef Pieprzyk, Jennifer Seberry, Identification of bad signatures in batches, Lecture Notes in Computer Science, Vol. 1751, H. Imai and Y. Zheng (Eds), Third International Workshop on Practice and Theory in Public Key Cryptosystems, PKC2000, Melbourne, Victoria, Australia, January 2000, pp. 28-45
- Hossein Ghodosi, Josef Pieprzyk, Cheating prevention in secret sharing, Lecture Notes in Computer Science, Vol. 1841, E. Dawson, A. Clark and C. Boyd (Eds), Information Security and Privacy, Fifth Australasian Conference, ACISP'2000, Brisbane, Australia, July 2000, pp. 328-341
Other Refereed Conference Proceedings - Vijay Pasupathinathan, Josef Pieprzyk, Huaxiong Wang, Formal Analysis of Card-based Payment Systems in Mobile Devices, The Australasian Information Security Workshop - Network Security, Hobart, Tasmania, January 16-19, 2006, Conferences in Research and Practice in Information Technology (CRIPT), Australian Computers Society Inc., Vol 54, pp. 213-220
- Gaurav Gupta, Josef Pieprzyk, Huaxiong Wang, An attack-localizing watermarking scheme for natural language documents, ACM Symposium on Information, Computer and Communication, ASIACCS06, Taiwan, March 21-24, 2006 (accepted December 6, 2005)
- Vijay Pasupathinathan, Josef Pieprzyk, Huaxiong Wang, Privacy enhanced electronic cheque system, Seventh IEEE International Conference on E-commerce Technology, CEC 2005, Munich, Germany, 19-22 July 2005, IEEE Computer Society, pp.431-434
- Josef Pieprzyk, Huaxiong Wang, Malleability Attacks on Multi-party Key Agreement Protocols. Proceedings of Workshop on Coding, Cryptography and Combinatorics (CCC 2003), K.Q. Feng, H. Niederreiter and C.P. Xing (Eds), Birkhauser, 2004, pp.277-288
- Josef Pieprzyk, Xianmo Zhang, An equivalent expression of Rijndael algorithm, Proceedings of the Ninth International Conference on Distributed Multimedia Systems, The 2003 International Workshop on Cryptology and Network Security, CNS'2003, Miami, Florida, September 24-26, 2003, pp.668-672
- Jarek Pastuszak, Dariusz Michalek, Josef Pieprzyk, Copyright protection of object-oriented software, Information Security and Cryptology - ICISC 2001, 4th International Conference Seoul, Korea, December 2001, Proceedings, K. Kim (Ed), LNCS 2288, Springer 2002, pp.186-199
- Josef Pieprzyk, Xianmo Zhang, Constructions of cheating immune secret sharing, Information Security and Cryptology - ICISC 2001, 4th International Conference Seoul, Korea, December 2001, Proceedings, K. Kim (Ed), LNCS 2288, Springer 2002, pp.226-243
- Josef Pieprzyk. Xianmo Zhang, Multisecret sharing immune against cheating, The Eigth International Conference on Distributed Multimedia Systems, DMS 2002, September 26-28, 2002, San Francisco, USA, pp.249-256
- Mohamed Al-Ibrahim, Josef Pieprzyk, Authentication of transit flows and k-sibling one-time signatures, The 6th IFIP Advanced Communications and Multimedia Security Conference, CMS02, Portoz, Slovenia, September 2002, Kluwer Academic Publisher, pp. 57-87
- Soroush Sedaghat, Josef Pieprzyk, E Vossough, A dynamic web agent for verifying the security and integrity of a web site's contents, Proceedings of the Sixth International Conference on Computer Supported Cooperative Work in Design, W. Shen, Z. Lin, J-P, Barthes, M. Kamel (Eds), CSCWD2001, July 12-14, 2001, London, Ontario, pp.330-337
- Josef Pieprzyk, Xianmo Zhang, Nonlinear secret sharing immune against cheating, The 2001 International Workshop on Cryptology and Network Security, Workshop Proceedings of The Seventh International Conference on Distributed Multimedia Systems, September 26-28, 2001, Tamkang University, Taipei, Taiwan, pp.154-161
- Soroush Sedaghat Josef Pieprzyk, Secure on-line data acquisition systems in a web-based environment, the Fifth International Conference on Computer Supported Cooperative Work in Design, CSCWD2000, November 29 to December 1, 2000 Hong Kong, pp.37-42
RESEARCH STUDENTS (current) PhD Students Vijayakrishnan Pasupathinathan, Analysis of Cryptographic Protocols, Computing Department, MU, co-supervisor Huaxiong Wang, started March 2006 (FT) Cameron McDonald, Analysis of Cryptographic Systems, Computing Department, MU, co-supervisor Christophe Doche, started March 2005 (FT) Soroush Sedaghat, Security Model for e-Government Services, Computing Department, Macquarie University, started August 2004 (PT) Krystian Matusiewicz, Algebraic Analysis and Design of Cryptographic Algorithms, Computing Department, Macquarie University. started February 2004 (FT) Cho Joo Yeon, Cryptographic analysis of stream ciphers, Computing Department, Macquarie University, co-supervisor Huaxiong Wang, started March 2003 (PT) Kourosh Fallah-Moshfeghi, Copyright protection, Computing Department, Macquarie University, supervisor Len Hamey, started July 2003 (FT) RESEARCH STUDENTS (completed) PhD - Mohamed H Al-Ibrahim, Source Authentication in Group Communication, Computing Department, Macquarie University, 2005
- Tian-Bing Xia, Constructions of Cryptographically Strong S-boxes, School of IT and CS, University of Wollongong, 2002
- Willy Susilo, Contributions to Fail-Stop Signature Schemes, School of IT and CS, University of Wollongong, 2001
- Huaxiong Wang, Unconditionally Secure Schemes for Distributed Authentication Systems, School of IT and CS, University of Wollongong, 2001
- Chen Xin Qu, Boolean Functions in Cryptography, School of IT and CS, University of Wollongong, 2000
- Chih-Hung Li, Multiparty Key Establishment Protocols, School of IT and CS, University of Wollongong, 2000
- Hossein Ghodosi, Society-Oriented Cryptographic Techniques forInformation Protection, School of IT and CS, University of Wollongong, 1999
- Shahram Bahtiari, Analysis and Design of Message Authentication Codes, School of IT and CS, University of Wollongong,1998
- Bernard Colbert, On the Security of Cryptographic Algorithms, Department of Computer Science, University College,University of NSW, 1997
- Esmaili Mansour, New Directions in Computer Intrusion Detection, Department of Computer Science, University of Wollongong,1997
- Ahmad Baraani-Dastjerdi, Access Control in Object-Oriented Databases, Department of Computer Science, University of Wollongong, 1996
- Babak Sadeghiyan, Principles for the designing of hashing algorithms, Department of Computer Science, University College, University of NSW, 1993
- Lawrie Brown, Analysis of the DES and the Design of the LOKI Encryption Scheme, Department of Computer Science, University College, University of NSW, 1991
MSc(Hons) - Pasupathinathan Vijayakrishnan, Cryptographic protocols in electronic payment systems, Computing Department, Macquarie University, November 2006
- Soroush Sedaghat, Web Authenticity, University of Western Sydney, September 2002
- Gunnar Storeboe, Security in the IP Layer -- the IP Security Protocol, University of Trondheim, Norway, March 1999
- Shaukat Hussein, Some Aspects of Computer Network Security, Department of Computer Science, University of Wollongong, 1998
- Olav Loen, Electronic Commerce: an Electronic Cash System, Department of Computer Science,University of Wollongong and Norwegian University of Science and Technology, Department of Computer Science, 1997
- Justin Lister, Intrusion Detection Systems: An Introduction to the Detection and Prevention of Computer Abuse, Department of Computer Science, University of Wollongong, 1995
- Per Magne Hoff, Secure Telnet; An Extension of Berkeley Telnet with Authentication and Encryption Options, University of Trondheim, Norway, 1990
Honours Students - Hanh Nguyen Vo, Algebraic Analysis of the Serpent Encryption Algorithm, Macquarie University, December 2004
- Tim Garnett, Level-Based Intrusion Detection, Macquarie University, December 2004
- Rish Raghu, Improvements on the PayWord Micropayment Scheme, Macquarie University, December 2003
- Dennis Luu, Incoercible Electronic Elections, Macquarie University, November 2003
- Adi Winarto, Investigation of Factoring Algorithms, Macquarie University, June 2003
- Stephen Gilmore, Computer Virus Detection: An Aplication of Firewall Technologies, Macquarie University, November 2002
- Amanda Scott, IDS - Catching the Bad Guys, Macquarie University, February 2002
- T.W. Chu, Knapsack public-key cryptosystems, University of Sydney, 1987
- G.S. Finkelstein, The nonlinear property of symmetric cryptosystems, University of Sydney, 1987
- J. Lo, Factoring algorithm, University of Sydney, 1987
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