I am currently pursuing my Ph.D. in Cryptography at Wuhan University (WHU), supervised by Huanguo Zhang.
I am also interning at Ant Group this summer, working on fully homomorphic encryption.

Before (Dec 2023 - Mar 2025), I was a CSC Visiting Ph.D. student at the University of Wollongong (UOW), Australia. There, I was hosted by Willy Susilo and had the fortune to study with the Institute of Cybersecurity and Cryptology (iC$^2$) led by him.
Before (Sep 2016 - Jun 2020), I completed my B.Sc. in Mathematics, also at Wuhan University.

My research focuses on cryptography and cyber security, to be more specific:

• Recently, my passion lies in lattice-based cryptogtaphy, involving zero-knowledge proofs, fully homomorphic encryption, and advanced tools built upon them.
• In the long term, I hope using technologies to establish trust among individuals, which I consider to be the most subtle and elegant aspect of cryptography.

I can be reached via wenjm at whu.edu.cn or cryptowjm at 163.com, if questions or we share common tastes.

📜 Publications

Here are the publications that I am the main contributor (also, as First Author or Corresponding Author). Generally, they can be classified into Conjectured Post-Quantum and Pre-Quantum. For other works, please see the links on the left panel of this page.

Conjectured Post-Quantum (e.g., Lattice and Rank)

• [WSZGZ24]Designated-Verifier Ring Signatures: Strong Definitions, Generic Constructions and Efficient Instantiations
  Jiaming Wen, Willy Susilo, Yanhua Zhang, Fuchun Guo, and Huanguo Zhang
  ICISC 2024 [Conference, CACR-C, Full Version, Slides]

• [WSYYZ24]Revocable ring signatures with CCA-Anonymity from standard lattices
  Jiaming Wen, Willy Susilo, Rupeng Yang, Zuoxia Yu, and Huanguo Zhang
  Computer Standards & Interfaces (CSI) 2024 [Journal, JCR Q1, 中科院2区]

• [WWZ23]Post-quantum Sigma Protocols and Signatures from Low-Rank Matrix Completions
  Jiaming Wen, Houzhen Wang, and Huanguo Zhang
  ProvSec 2023 [Conference, CACR-C, Slides]

• [WBYZWH23]LaRRS: Lattice-Based Revocable Ring Signature and its application for VANETs
  Jiaming Wen, Lu Bai, Zhichao Yang, Huanguo Zhang, Houzhen Wang, and Debiao He
  IEEE Transactions on Vehicular Technology (T-VT) 2023 [Journal, JCR Q1, 中科院2区, Code by Lu]

• [WWLZ22]Aitps: A Two-Party Signature Scheme from Asymmetry Module Lattice Problems (in Chinese)
  Jiaming Wen, Houzhen Wang, Jinhui Liu, and Huanguo Zhang
  Journal of Computer Research and Development (计算机研究与发展) 2023 [Journal, Chinese CCF-T1]

• [WDWWZ25]Olithium: A Lattice-Based Online/Offline Signature Scheme without Trapdoors (in Chinese)
  Houzhen Wang, Xiaochao Duan, Jiaming Wen✉️, Yahui Wang, and Huanguo Zhang (Initiator & Corresponding Author)
  Chinese Journal of Computers (计算机学报) 2025 [Journal, Chinese CCF-T1, Code by Xiaochao]

Pre-Quantum (e.g., Discrete Logarithm and Pairing)

All in this category were done when I was a newcomer to the crypto world, but were accepted and published a long time later.

• [W24]Analysis and Improvement of a Conditional Privacy-Preserving Authentication Scheme with Double-Insurance in VANETs
  Jiaming Wen, Lu Bai, Houzhen Wang, Jinhui Liu, Yahui Wang, and Huanguo Zhang
  IEEE Transactions on Vehicular Technology (T-VT) 2024 [Journal, JCR Q1, 中科院2区]

• [WWLZ23]ACKE: Asymmetric Computing Key Exchange Protocol for IoT Environments
  Houzhen Wang, Jiaming Wen✉️, Jinhui Liu, and Huanguo Zhang (First Author is my co-advisor & Corresponding Author)
  IEEE Internet of Things Journal (IoT-J) 2023 [Journal, JCR Q1, 中科院1区]

💻 Services

Teaching

• Feb 2023 - Jun 2023: Teaching Assistant
  Program Design and Experimentation (undergraduate course in Spring 2023), Wuhan University
• Sep 2021 - Jan 2022: Teaching Assistant
  Cryptography (undergraduate course in Fall 2021), Wuhan University

Serving as Reviewers

• Journals: IEEE Transactions on Information Theory (T-IT), IEEE Transactions on Dependable and Secure Computing (T-DSC), IEEE Transactions on Vehicular Technology (T-VT), IEEE Internet of Things Journal (IoT-J), Journal of Information Security and Applications (JISA), etc.
• Conferences: ICISC 2024, Inscrypt 2023, etc.

🧰 Misc

Serendipity

My name starts with “jiami” (Chinese for “encrypt”), and ends with “mingwen” (Chinese for “plaintext”).
I remove “ng” from it to obtain “miwen” (Chinese for “ciphertext”) for several usernames of mine, e.g., wechat, twitter, and github, as I believe it is more suitable for spreading over the public channel :)

Some useful links

• My bilibili space, including several talks and courses that I am or was interested in.
• IACR ePrint Archive, a mysterious website suggested visiting every day.
• The Lattice Club, including so many resources about Lattice-based Cryptography.
• Post-Quantum Signatures Zoo, including an overview of Post-Quantum Signatures.
• Kai-Min Chung’s Homepage, including high-quality cryptography courses in Chinese.
• Journal of WoCrypt, a very serious fake journal, whose outcomes include “安全归约导论”, “数字签名密史” and its slides. Here are my always-unfinished notes for the former and xmind for the latter, which I hope are salutes to Prof. Fuchun.

Last updated: 11 Jun 2025