伍伦贡大学，网络空间安全与密码研究所，博士

Provsec 2019，ACISP 2021，ISC2022等国际学术会议程序委员会委员。

公钥密码学，可证明安全，隐私保护，云计算

长期从事密码学的研究，研究方向包括公钥密码学、可证明安全、隐私保护、云计算等；主持/参与国家级和省部级科研项目4项；在CRYPTO，ASIACRYPT，IEEE TDSC，IEEE TSC，Information Sciences，计算机学报，中国科学等会议及期刊上发表SCI/EI检索学术论文20余篇；担任多个国际学术会议的程序委员会委员，国内/国际学术期刊/会议的审稿人。

1.国家自然科学基金青年项目，支持密文进化的广播加密，2020.01-2022.12，负责人；

2.江苏省自然科学青年基金，密文可进化的广播加密及其在云数据共享中的应用，2019.07-2022.06，负责人；

3.国家自然科学基金联合基金重点支持项目，基于国家商用密码标准体系的区块链系统数据安全与隐私保护关键密码技术研究，2022.01-2025.12，参与；

4.国家自然科学基金重点项目，基于我国商用密码的区块链安全保护研究，2021.01-2025.12，参与。

代表性论文：

1. Jianchang Lai, Fuchun Guo, Willy Susilo, Peng Jiang, Guomin Yang, Xinyi Huang. Generic Conversions from CPA to CCA without Ciphertext Expansion for Threshold ABE with Constant-Size Ciphertext. Information Sciences, 613: 966-981 (2022) (SCI一区)

2. Willy Susilo, Yannan Li, Fuchun Guo, Jianchang Lai, We Wu. Public Cloud Data Auditing Revisited: Removing the Tradeoff Between Proof Size and Storage Cost. ESORICS (2) 2022: 65-85 (CCF-B 类)

3. Willy Susilo, Peng Jiang, Jianchang Lai, Fuchun Guo, Guomin Yang, Robert Deng. Sanitizable Access Control System for Secure Cloud Storage Against Malicious Data Publishers.Transactions on Dependable and Secure Computing 19(3): 2138-2148 (2022) (CCF-A类, SCI一区）

4. Jianchang Lai, Fuchun Guo, Willy Susilo, Xinyi Huang, Peng Jiang, Futai Zhang. Data access control in cloud computing: flexible and receiver extendable. IEEE Transactions on Services Computing, 15(5): 2658-2670 (2022) (SCI一区)

5. Jianchang Lai, Ge Wu, Peng Jiang, Zhen Zhao, Willy Susilo, Fuchun Guo. Generic construction for tightly-secure signatures from discrete log. Theoretical Computer Science 888: 13-21 (2021) (CCF-B类)

6. Peng Jiang, Jianchang Lai*, Fuchun Guo, Willy Susilo, Man Ho Au, Guomin Yang, Yi Mu, Rongmao Chen. Identity-based revocation system: enhanced security model and scalable bounded IBRS construction with short parameters. Information Sciences. 472: 35-52 (2019) (SCI一区)

7. Jianchang Lai, Yi Mu, Fuchun Guo, Peng Jiang, Willy Susilo. Privacy-enhanced attribute-based private information retrieval.Information Sciences. 454-455: 275-291 (2018). (SCI一区)

8. Jianchang Lai, Yi Mu, Fuchun Guo, Rongmao Chen, Sha Ma. Efficient k-out-of-n oblivious transfer scheme with the ideal communication cost. Theoretical Computer Science. 714: 15-26 (2018) (CCF-B类)

9. Fuchun Guo, Rongmao Chen, Willy Susilo, Jianchang Lai, Guomin Yang, Yi Mu. Optimal security reductions for unique signatures: bypassing impossibilities with a counterexample. CRYPTO (2) 2017: 517-547 (CCF-A类)

10. Fuchun Guo, Willy Susilo, Yi Mu, Rongmao Chen, Jianchang Lai, Guomin Yang. Iterated random oracle: a universal approach for finding loss in security reduction. ASIACRYPT (2) 2016: 745-776 (CCF-B类)

欢迎对密码学感兴趣的同学加入！