Bio
Prof. Dr. Josef Pieprzyk (Editor-in-Chief of Cryptography) is a senior principal research scientist at CSIRO Data61; a professor at Institute of Computer Science, Polish Academy of Sciences; and an adjunct professor at Queensland University of Technology. His main research focus is Cryptology and Information Security, including the design and analysis of cryptographic algorithms (such as encryption, hashing and digital signatures), secure multiparty computations, cryptographic protocols, copyright protection, e-commerce, web security and cybercrime prevention. Dr Pieprzyk has published 5 books and edited 10 books (conference proceedings), 6 book chapters, and more than 300 papers in refereed journals and refereed international conferences.

Talk
On the Design of Light Lattice based Post Quantum Schemes

Bio
Dr. Xianhui Lu (Guest Editor of Cryptography) is a researcher at the Institute of Information Engineering, Chinese Academy of Sciences (CAS), and Deputy Director of the National Key Laboratory of Cybersecurity. He serves as a Chinese expert for the ISO/IEC international standardization organization. In 2009, he received his Doctorate in Information Security from Southwest Jiaotong University. From 2009 to 2012, he conducted postdoctoral research at the State Key Laboratory of Information Security, CAS. In 2012, he joined the Institute of Information Engineering, CAS. His main research interests include provable security theory, post-quantum cryptography, fully homomorphic encryption, and physical layer cryptography. He led a team in designing the post-quantum cryptographic algorithm LAC, which participated in the USA Post-Quantum Cryptography Standardization competition and became one of the 26 candidate algorithms advancing to the second round. He designed core algorithms of FHE such as gate bootstrapping, circuit bootstrapping, and AES transciphering, published in Eurocrypt 2024, TCHES 2024, and CCS 2025.

Talk
QIMEN-PRISM: Fast Isogeny-based Signature Scheme

Bio
Dr. Yifu Lai is a tenure-track assistant professor at Shanghai Jiao Tong University. Prior to this, he served as a postdoctoral researcher at KU Leuven from October 2025 to February 2026. Previously, he worked as a postdoctoral researcher in Eike Kiltz's lab at CASA, Ruhr-Universität Bochum, from October 2023 to September 2025. He earned his PhD in Mathematics from the University of Auckland in January 2020, under the supervision of Steven Galbraith. His primary research interests focus on constructing cryptosystems that are provably secure based on post-quantum assumptions. He is particularly interested in advancing the boundaries of existing cryptographic paradigms and exploring the limits of cryptographic tools. In pursuit of these goals, he also enjoys conducting cryptographic analysis and reductions to better understand the fundamental principles of cryptosystems.

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DTRU: A Versatile, Compact, Simple, and Robust NTRU KEM with Double E8 Encoding

Bio
Prof. Dr. Yunlei Zhao is a full professor in the School of Computer Science at Fudan University. He received his Ph.D. degree in Cryptography from Shanghai Jiao Tong University. His research focuses on post-quantum cryptography, with particular emphasis on lattice-based cryptographic constructions, provable security, and cryptographic protocols resilient to quantum adversaries. Professor Zhao has published extensively in leading cryptographic conferences and journals, and his research has contributed to fundamental advances in key encapsulation mechanisms, digital signatures, and secure computation. He has served on editorial and program committees for several prominent venues, and is actively engaged in advancing post-quantum cryptographic standardization and education in China. Currently, he leads a research group at Fudan University, mentoring graduate students and fostering collaborations with both industry and academic partners to translate theoretical cryptographic results into practical, secure systems.

Talk
Concrete security of lattice-based cryptography

Bio
Prof. Dr. Shi Bai is a tenured professor at Shanghai Jiao Tong University, with primary research interests covering cryptography and computational number theory. He received his Ph.D. in Computer Science from The Australian National University in 2012. Following his doctoral studies, he conducted postdoctoral research at the University of Auckland (New Zealand) and at the École Normale Supérieure de Lyon (France). Previously, he served as an associate professor in the Department of Mathematics at Florida Atlantic University, where he also co-directed the Center for Cryptography and Information Security. His research has been published at flagship international cryptography conferences. In 2015, he received the Best Paper Award at ASIACRYPT. He has served as Principal Investigator for multiple research projects funded by the U.S. National Science Foundation (NSF) and the National Institute of Standards and Technology (NIST). In 2021, he received the prestigious NSF CAREER Award. Notably, as a core designer of the post-quantum signature algorithm Dilithium, which has been adopted by NIST as ML-DSA/FIPS-204 for the U.S. post-quantum cryptography standard, he has made foundational contributions to cryptographic standardization. In addition to his research, he has consistently served on the Program Committees of leading international cryptography conferences and is currently serving as Program Committee Co-Chair for PKC 2026.