to my web page. I am an Associate Professor (Australian equivalent to
Professor in North America) at the Cybersecurity
Lab of the Faculty
of Information Technology, Monash
University. Currently, my main research interests are in the
design and analysis of cryptographic algorithms and cybersecurity
protocols, their applications, and the formulation and proof of their
security properties. Specific areas I have worked on include:
lattice-based cryptography, cryptographic primitives with extra
functionality (such as homomorphic encryption and multilinear maps),
user authentication protocols, privacy-preserving protocols and secure
multiparty computation, cryptographic hash functions, public key
encryption, digital signatures, signcryption.
Kuchta, A. Sakzad, D. Stehle, R. Steinfeld, S. Sun: Measure-Rewind-Measure:
Tighter Quantum Random Oracle Model Proofs for One-Way to Hiding
and CCA Security. In Proceedings of EUROCRYPT 2020.
Zhao, R. Steinfeld, A. Sakzad: FACCT: FAst, Compact, and
Constant-Time Discrete Gaussian Sampler over Integers. IEEE
Trans. Computers 69(1): 126-137 (2020). Preprint: pdf
Bai, D. Das, R. Hiromasa, M. Rosca, A. Sakzad, D. Stehle, R.
Steinfeld, Z. Zhang: MPSign: A Signature from Small-Secret
Middle-Product Learning with Errors. In Proceedings of PKC
2020. Preprint: pdf
Sun, A. Sakzad, R. Steinfeld, J.K. Liu, D. Gu: Public-Key
Puncturable Encryption: Modular and Compact Constructions. In
Proceedings of PKC 2020. Preprint; pdf
Zhao, R. Steinfeld, A. Sakzad: COSAC: COmpact and Scalable
Arbitrary-Centered Discrete Gaussian Sampling over Integers.
In Proceedings of PQCrypto 2020. Preprint: pdf
R. Steinfeld, A. Sakzad, R.K. Zhao: Practical
MP-LWE-based encryption balancing security-risk versus efficiency.
Designs Codes and Cryptography. 87(12): 2847-2884, 2019.
M.F. Esgin, R.K. Zhao, R. Steinfeld,
J.K. Liu, D. Liu: MatRiCT: Efficient, Scalable and Post-Quantum
Blockchain Confidential Transactions Protocol. In Proceedings of
ACM Conference on Computer and Communications Security (ACM CCS
2019). Preprint: pdf
M.F. Esgin, R. Steinfeld, J.K. Liu, D.
Liu: Lattice-based Zero-Knowledge Proofs: New Techniques for
Shorter and Faster Constructions and Applications. In
Proceedings of CRYPTO 2019. Preprint: pdf
S. Bai, T. Lepoint, A. Roux-Langlois,
A. Sakzad, D. Stehle, R. Steinfeld. Improved Security Proofs in
Lattice-Based Cryptography: Using the Renyi Divergence Rather than
the Statistical Distance. Journal of Cryptology. 31(2):
610-640, 2018. Preprint: pdf
R. Steinfeld and A. Sakzad and R. Zhao. Titanium: Proposal
for a NIST Post-Quantum Public-key Encryption and KEM Standard. Presented
NIST PQC Standardization Conference, April 2018.
Presentation Slides: pdf
Full NIST submission document: pdf
. For full details, software, and updates, please see the Titanium
Rosca, A. Sakzad, D. Stehle,
and R. Steinfeld, Middle-Product Learning with Errors. In
Proceedings of CRYPTO 2017. Full version: pdf
Bai and A. Langlois and T. Lepoint and D. Stehle
and R. Steinfeld. Improved Security Proofs in Lattice-Based
Cryptography: Using the Renyi Divergence Rather Than the Statistical
Distance. In Proceedings of ASIACRYPT (1) 2015, pp. 3-24,
Springer-Verlag, 2015. (BEST PAPER AWARD)