Welcome to my website!
About me
My name is Xinyu Zhang (张欣雨), and I’m a Research Fellow (Postdoc.) at Monash University.
Research Interests
My research focuses on applied cryptography, particularly post-quantum cryptography based on symmetric key primitives. My research interests include:
- Post-quantum digital signatures
- Ring and group signatures
- Symmetric-key-primitive-based cryptography
- Zero-knowledge proofs and related techniques
I also work on weighted cryptography, including weighted threshold signatures (e.g., ECDSA) and weighted secret sharing.
My Journey into Cryptography
My journey into cryptography has been quite unconventional. I initially studied electronic commerce during my bachelor’s degree (which, to put it simply, was about learning how to run a business online). At that time, I struggled with my university math courses and couldn’t see the relevance of mathematics in my studies. To be honest, before I learn cryptography, I can’t see the the point of learning math (how naive I was!). Now, as I work in cryptography, I regret not paying more attention to my math courses during my bachelor’s.
Later, I pursued a Master of Information Technology at Monash University, where I took an elective unit, FIT5163: Information and Computer Security, taught by Joseph Liu, who is now my supervisor. He is one of the best teachers I’ve ever had, and his approach to teaching cryptography inspired my passion for the subject. This led me to pursue my master’s thesis with the topic ring siganture under the supervision of Joseph and Ron. Then, with a recommendation letter from Veronika Kuchta (who was a Postdoc. at Monash and the lecturer of FIT5124 Advanced topics for security) to Joseph Liu, I was lucky to be accepted as a PhD student under Joseph and Ron’s supervision.
I am sincerely grateful to everyone who has supported me along this journey!
2026 News
- Our paper Verifiable Weighted Secret Sharing based on Chinese Remainder Theorem has been accepted by Asiacrypt 2026! (I will post the eprint version soon!)
- We have a SoK paper about post-quantum ring signatures based on symmetric key primitives accepted by ICICS 2026!