Hossein Hafezi

Research

Publications (Google Scholar)

  1. Arguments of Knowledge with Distributed Verification

    Benedikt Bünz, Hossein Hafezi, William Wang

    Under submission

  2. Aegon: Self-Auditable Key Transparency

    Hossein Hafezi, Alireza Shirzad, Benedikt Bünz, Kevin Lewi, Dillon George, Joseph Bonneau

    Under submission

    In collaboration with Meta Research

    PDFCode

  3. WillowFold: Secure Aggregation with a Lightweight Committee

    Hossein Hafezi, Kasra Abbaszadeh, Adrià Gascón, Phillipp Schoppmann, Mariana Raykova, Benedikt Bünz

    Under submission

    In collaboration with Google Research

    PDF

  4. Single-Server Private Outsourcing of zk-SNARKs

    Kasra Abbaszadeh, Hossein Hafezi, Johnathan Katz, Sarah Meiklejohn

    IEEE Symposium on Security and Privacy (S&P) 2026

    Contributed talk, ZKProof 8 · in collaboration with Google Research

    PDF

  5. SoK: Lookup Table Arguments

    Hossein Hafezi, Gaspard Anthoine, Matteo Campanelli, Dario Fiore

    Financial Cryptography and Data Security (FC) 2026

    PDF

  6. IronDict: Transparent Dictionaries from Polynomial Commitments

    Hossein Hafezi, Alireza Shirzad, Benedikt Bünz, Joseph Bonneau

    35th USENIX Security Symposium (USENIX Security) 2026

    Contributed talk, Real World Crypto 2026

    PDFCode

  7. KZH-Fold: Accountable Voting From Sublinear Accumulation

    Benedikt Bünz, Hossein Hafezi, George Kadianakis, Arantxa Zapico

    ACM Conference on Computer and Communications Security (CCS) 2025

    Contributed talk, ZKProof 8 · in collaboration with Ethereum Foundation

    PDFCode

  8. Hekaton: Horizontally-Scalable zkSNARKs via Proof Aggregation

    Michael Rosenberg, Tushar Mopuri, Hossein Hafezi, Ian Miers, Pratyush Mishra

    ACM Conference on Computer and Communications Security (CCS) 2024

    PDFCode

Talks

KZH-Fold: Accountable Voting from Sublinear Accumulation (slides)

  • ZKProof 8, Rome — May 2026 (slides) (video)
  • ACM CCS 2025 — October 2025 (slides) (video)
  • O(1) Labs Reading Group — May 2025 (video)
  • Stanford Crypto Reading Group — April 2025 (video)
  • UMD Crypto Reading Group — April 2025
  • EPFL, Chiesa's Reading Group — April 2025
  • UPenn Reading Group — March 2025

IronDict: Transparent Dictionaries from Polynomial Commitments (slides)

  • NYU Crypto Reading Group — December 2025
  • Microsoft Crypto Group, Redmond — October 2025 (video)
  • Cloudflare Research Group, invited talk — August 2025
  • UNC Chapel Hill Cryptography Group — August 2025
  • Google Research, Private Computation Seminar — July 2025 (video)
  • IMDEA Software Reading Group — June 2025

Self-Auditable Key Transparency (slides)

  • Cedracrypt 2026 — July 2026
  • Real World Crypto 2026 — March 2026 (video)
  • Cambridge Security Seminar — March 2026 (video)

Aegon: Self-Auditable Key Transparency

  • Microsoft Research — September 2026

Single-Server Private Outsourcing of zk-SNARKs (slides)

  • ZKProof 8, Rome — May 2026 (video)

Teaching

Teaching Assistant for Cryptography, University of Cambridge (Winter 2026) — course page.

Service

External reviewer for Eurocrypt 2025, ACM CCS 2025, USENIX Security 2026, FC 2026 and ACM CCS 2027.

Volunteer staff at Eurocrypt 2025 (Madrid) and zkSummit 14 (Rome).