Xiong (Leo) Fan

Postdoctoral Researcher, University of Maryland

Curriculum Vitae (updated September, 2019)

Office: 5252 Iribe Center for Computer Science
    University of Maryland, College Park, MD
Email: xfan AT cs dot umd dot edu

I am a postdoctoral researcher at University of Maryland, hosted by Prof. Jonathan Katz.

I completed my Ph.D. at Cornell University under the supervision of Prof. Elaine Shi. During my doctoral study, I have been a visiting graduate student or an intern at Simons Institute, Yahoo! Labs, Bell Labs and IBM TJ Waston Research Center.

Research Interests: Cryptography, security and programming languages.


  1. Towards Attribute-Based Encryption for RAMs from LWE: Sub-linear Decryption, and More
    Prabhanjan Ananth, Xiong Fan and Elaine Shi.
    25th IACR Conference on the Theory and Application of Cryptology and Information Security (Asiacrypt 2019). [paper]
  2. Proxy Re-Encryption and Re-Signatures from Lattices
    Xiong Fan and Feng-Hao Liu.
    17th Conference on Applied Cryptography and Network Security (ACNS 2019). [paper]
  3. FE for Inner Products and Its Application to Decentralized ABE
    Zhedong Wang, Xiong Fan and Feng-Hao Liu.
    22nd IACR Conference on Practice and Theory of Public Key Cryptography (PKC 2019). [paper]
  4. Symbolic Proofs for Lattice-Based Cryptography
    Gilles Barthe, Xiong Fan, Joshua Gancher, Benjamin Grégoire, Charlie Jacomme and Elaine Shi.
    25th ACM Conference on Computer and Communications Security (CCS 2018). [paper, code]
  5. Making Public Key Functional Encryption Function Private, Distributively
    Xiong Fan and Qiang Tang.
    21st IACR Conference on Practice and Theory of Public Key Cryptography (PKC 2018). [paper]
  6. Compact Inner Product Encryption from LWE
    Zhedong Wang, Xiong Fan and Mingsheng Wang.
    19th International Conference on Information and Communications Security (ICICS 2017). [paper]
  7. Hashing Garbled Circuits for Free
    Xiong Fan, Chaya Ganesh and Vladimir Kolesnikov.
    36th IACR Conference on the Theory and Applications of Cryptographic Techniques. (EUROCRYPT 2017). [paper]
  8. Deniable Attribute Based Encryption for Branching Programs from LWE
    Daniel Apon, Xiong Fan and Feng-Hao Liu.
    14th IACR Theory of Cryptography Conference (TCC 2016). [paper]


  • Puncturable Signatures and Applications in Proof-of-Stake Blockchain
    Xinyu Li, Jing Xu, Xiong Fan, Yuchen Wang, Zhenfeng Zhang. [paper]
  • IPDL: A Probabilistic Dataflow Logic for Cryptography
    Xiong Fan, Joshua Gancher, Greg Morrisett, Elaine Shi, Kristina Sojakova. [paper, code]