Ganyuan Cao

Contact: ganyuan.cao@telecom-paris.fr

Office: 4C54 at Télécom Paris

About Me

Hello! My name is Ganyuan. You can also call me "Gan".

I am a doctoral researcher at Télécom Paris, Institut Polytechnique de Paris supervised by Prof. Dr. Sébastien Canard and Dr. Qingju Wang.

My research interests include:

• Provable security with Universal Composability (UC), Game-Based Proofs, with particular interest in Idealized Models e.g., ROM...
• Secure (multi-party) protocols via compositions of advanced cryptographic primitives (with recent focus on symmetric primitives including oblivious PRF, constrained PRF, and pseudorandom codes (PRC))...

Check out CryptoSearch: a tool I made to make finding citation keys in CryptoBib easier :)

I snowboard 🏂. I practice Aikido 🥋. I do aircraft spotting ✈️. I play Go ⚫⚪.

Feel free to contact :)

News

• Our work HE-based On-the-Fly MPC, Revisited: Universal Composability, Approximate and Imperfect Computation, Circuit Privacy is accepted at Asiacrypt 2026.
• Our work Ideal Pseudorandom Code, Revisited is accepted at CANS 2026.

Publications

Conference Paper / Journal

1. HE-based On-the-Fly MPC, Revisited: Universal Composability, Approximate and Imperfect Computation, Circuit Privacy

   Ganyuan Cao, Sylvain Chatel, Christian Knabenhans

   Asiacrypt 2026

   [ePrint] [poster]

2. Ideal Pseudorandom Code, Revisited

   Ganyuan Cao

   CANS 2026

   [ePrint]

3. Proof of Contribution: A Modification of Proof of Work to Increase Mining Efficiency

   Tengfei Xue, Yuyu Yuan, Zahir Ahmed, Krishna Moniz, Ganyuan Cao, Cong Wang

   IEEE COMPSAC, 2018

   [paper]

Theses

1. A Composable View of Verifiable Homomorphic Encryption in Multi-Party Settings

   Ganyuan Cao

   Master's Thesis, EPFL, 2025

   Supervisors: Prof. Dr. Alessandro Chiesa, Christian Knabenhans, Dr. Sylvain Chatel

   [paper] [slides] [bibtex]

2. Revisiting and Enhancing SCB Mode towards Length-Preserving AEAD

   Ganyuan Cao

   Master's Semester Project, ETH Zurich, 2023

   Supervisors: Prof. Dr. Ueli Maurer, Dr. Fabio Banfi

   [paper] [bibtex]

Preprints

1. A Composable View of Homomorphic Encryption and Authenticator

   Ganyuan Cao

   IACR ePrint, 2024

   [paper]

2. Decryption Indistinguishability under Chosen Control Flow

   Ganyuan Cao

   IACR ePrint, 2024

   [paper]

Teaching & Supervising

Teaching

TBD.

Supervising

I am honored to (co-)supervise the following students:

• Antoine Bertail

  [M2 Internship] Provable Security in Quantum Idealized Models

  Co-supervised with Dr. Qingju Wang and Jinwei Zheng

  03.2026 --- 09.2026

Community Services

Reviewer

• 2026: IACR Crypto, IACR Asiacrypt, WAHC (ACM CCS Workshop)