Thank you for visiting my site!

I earned my Ph.D. in Computer Science from the Graduate Center of CUNY in 2015, where I had the privilege of working under the guidance of Professor Nelly Fazio. My research focused on the foundational theories, provable constructions, and practical applications of Cryptography, Steganography, and Computer Security.

Since then, I've been at Google, where I currently lead a team of software engineers in the User Protection organization. We develop infrastructure that safeguards billions of Google users through advanced security techniques like risk-based re-authentication and trust-based feature access. Our work protects a wide range of users, including everyday consumers, content creators, journalists, political figures, and business owners.

This site contains my published papers, talks, and other professional updates. If you're interested in discussing cryptography, security, or any related topics, I'm always open to connecting with like-minded professionals. Feel free to reach out via email or connect with me on LinkedIn. I welcome the opportunity to collaborate and share ideas in this exciting field. Looking forward to hearing from you!

Publications:

  1. KHyperLogLog: Estimating Reidentifiability and Joinability of Large Data at Scale
    Pern Hui Chia, Damien Desfontaines, Irippuge Milinda Perera, Daniel Simmons-Marengo,
    Chao Li, Wei-Yen Day, Qiushi Wang, and Miguel Guevara
    IEEE Symposium on Security and Privacy – SP 2019, pp. 350-364, IEEE, 2019
    [ paper | ieee ]
  2. Oblivious Group Storage
    Nelly Fazio, Antonio R. Nicolosi, and Irippuge Milinda Perera
    The Annual Conference of International Technology Alliance – ACITA, 2015
    [ paper ]
  3. Combating Insider Attacks in IEEE 802.11 Wireless Networks with Broadcast Encryption
    Joseph Soryal, Irippuge Milinda Perera, Ihab Darwish, Nelly Fazio, Rosario Gennaro, and Tarek Saadawi
    IEEE Int. Conf. on Advanced Information Networking and Applications – AINA 2014, pp. 472-479, IEEE, 2014
    [ paper | ieee ]
  4. Broadcast Steganography
    Nelly Fazio, Antonio R. Nicolosi, and Irippuge Milinda Perera
    Topics in Cryptology – CT-RSA 2014, LNCS 8366, pp. 64-84, Springer, 2014
    [ paper | eprint | springer ]
  5. Hard-Core Predicates for a Diffie-Hellman Problem over Finite Fields
    Nelly Fazio, Rosario Gennaro, Irippuge Milinda Perera, and William E. Skeith III
    Advances in Cryptology – CRYPTO 2013, LNCS 8043, pp. 148-165, Springer, 2013
    [ paper | eprint | springer ]
  6. Protecting Receivers' Identities in Secure Data Distribution
    Nelly Fazio and Irippuge Milinda Perera
    The Annual Conference of International Technology Alliance – ACITA, 2012
    [ paper | poster ]
  7. Outsider-Anonymous Broadcast Encryption with Sublinear Ciphertexts
    Nelly Fazio and Irippuge Milinda Perera
    Public Key Cryptography – PKC 2012, LNCS 7293, pp. 225-242, Springer, 2012
    [ paper | eprint | springer | poster ]

Presentations:

  1. Combating Insider Attacks in IEEE 802.11 Wireless Networks with Broadcast Encryption
    AINA Conference, University of Victoria, BC, Canada, May 14, 2014
    [ slides | listing ]
  2. Broadcast Steganography
    RSA Conference, Moscone Center, CA, USA, February 25, 2014
    [ slides | listing ]
  3. How to Broadcast a Secret Covertly
    GC Cryptography Student Seminar, The Graduate Center of CUNY, NY, USA, February 21, 2014
    [ slides | listing ]
  4. Hard-Core Predicates for a Diffie-Hellman Problem over Finite Fields
    CRYPTO Conference, UC Santa Barbara, CA, USA, August 21, 2013
    [ video | slides | listing ]
  5. Challenges in Proving Hard-Core Predicates for a Diffie-Hellman Problem
    IBM Research Cryptography Seminar, Thomas J. Watson Research Center, NY, USA, April 10, 2013
    [ slides ]
  6. Anonymous Broadcast Encryption
    GC Cryptography Student Seminar, The Graduate Center of CUNY, NY, USA, June 22, 2012
    [ slides | listing ]
  7. Outsider-Anonymous Broadcast Encryption with Sublinear Ciphertexts
    NYU Cryptography Seminar, New York University, NY, USA, April 25, 2012
    [ slides | listing ]

Theses:

  1. Doctoral Dissertation: Theory and Applications of Outsider Anonymity in Broadcast Encryption
    Irippuge Milinda Perera
    The Department of Computer Science, The Graduate Center of CUNY, 2015
    [ paper ]
  2. Master's Thesis: Anonymity in Public-Key Encryption
    Irippuge Milinda Perera
    The Department of Computer Science, The City College of CUNY, 2013
    [ paper ]
  3. Senior Capstone Project: A Secure Communication System for Sensor Networks
    Tolulope Abayomi, Stanis Laus Billy, Edwin Guzman, and Irippuge Milinda Perera
    The Department of Computer Science, The City College of CUNY, 2010
    [ paper ]

Technical Reports:

  1. Decentralized Information Flow Control for Operating Systems – A Survey
    Kenneth Ezirim, Wai Khoo, George Koumantaris, Raymond Law, and Irippuge Milinda Perera
    The Department of Computer Science, The Graduate Center of CUNY, 2012
    [ paper ]
  2. Trusted Platform Module – A Survey
    Kenneth Ezirim, Wai Khoo, George Koumantaris, Raymond Law, and Irippuge Milinda Perera
    The Department of Computer Science, The Graduate Center of CUNY, 2012
    [ paper ]
  3. Defenses Against Network Coding Pollution Attacks in Wireless Mesh Networks
    Irippuge Milinda Perera
    The Department of Computer Science, The Graduate Center of CUNY, 2011
    [ paper ]