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Aniket Kate

Assistant Professor
Department of Computer Science
Faculty Member, CERIAS
Purdue University

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Brief Bio

I am an assistant Professor in the computer science department at Purdue university. Before joining Purdue in 2015, I was a junior faculty member and an independent research group leader at Saarland University , Germany. I completed my postdoctoral fellowship at Max Planck Institute for Software Systems (MPI-SWS), Germany in 2012, and received my PhD from the University of Waterloo, Canada in 2010.

Research Interests

I design, implement, and analyze privacy and transparency enhancing technologies. My research integrates applied cryptography, distributed systems, and data-driven analysis. My prominent ongoing research projects are as follows:

  • Cryptocurrencies and Blockchain Technology [WWW '18] [NDSS '18 '17 '15] [CCS '17 '15] [PETS '17 '16] [ESORICS '14]
    We analyze and improve the privacy and security properties of cryptocurrencies (e.g., Bitcoin), IOU credit networks (e.g., Ripple), and consortium/permissioned blockchain solutions (e.g., Hyperledger). We also develop innovative cryptography-aided (smart) contracts for interesting real-world applications.

  • Cryptography for Anonymity [NDSS '17] [ACNS '17 '15 '14] [ESORICS '16] [WPES '12] [TISSec '10] [FC '10] [PETS '07]
    We develop cryptographic primitives to enhance privacy, scalability, efficiency, and accountability of anonymous communication and anonymous storage protocols.

  • Analyzing Anonymous Communication Networks (ACNs) [Oakland '18] [CCS '14] [CSF '13 '12]
    We have developed a framework (AnoA) for defining, analyzing, and quantifying anonymity properties for ACNs. We have built a light-weight monitor, MATor, to assess the anonymity of the Tor network and other ACNs in real time. We are now working on understanding the fundamental communication lower bounds for anonymous communications.

  • Accountability and Transparency [TDSC '16] [COSN '15]
    We have designed a secure data transfer architecture facilitating transparency in malicious data lineage scenarios. Against the sybil attacks in online reputation systems, we have developed an tampering detection approach (Stamper) that allows system operators to detect manipulated computations without going after the individual Sybil nodes.

  • Longitudinal Privacy and Right to Delete/Conceal/Forget [IC '17] [SOUPS' 16]
    We analyze users' deletion habits on the online platform and the associated Streisand effect. We propose effective counter-measures to protect those deletions from the Cyberstalkers.

Other (Recent) Projects

  • Privacy-Preserving Web Analytics [ACSAC '14] [Oakland '12]
    Using multi-party computation (MPC) and private-information retrieval (PIR) techniques, we have designed web analytics applications with strong privacy properties.

  • Multi-party Cryptography [PODC '14 '12] [CT-RSA '13] [ASIACRYPT '11 '10] [SCN '10] [ICDCS '09]
    We have designed several protocols for verifiable secret sharing and distributed key generation in synchronous as well as asynchronous communication settings, which improve resilience and efficiency of these primitives. We have also proposed applications of those protocols for identity-based cryptography, MPC, and distributed hash tables (DHTs).

  • P2P Privacy and Security [ToN '13] [ASIACCS '12] [ICDCS '10]
    Using threshold cryptography and oblivious transfer, we have designed scalable, robust, and private protocols for secure DHT lookups in peer-to-peer (P2P) systems.

For more about my research (inclination)...

Selected Recent Publications

For a complete list, local copies, and techreports: follow
  • Anonymity Trilemma: Strong Anonymity, Low Bandwidth, Low Latency---Choose Two
    Debajyoti Das, Sebastian Meiser, Esfandiar Mohammadi, and Aniket Kate
    To appear at IEEE S&P (Oakland), 2018.

  • Mind Your Credit: Assessing the Health of the Ripple Credit Network
    Pedro Moreno-Sanchez, Navin Modi, Raghuvir Songhela, Aniket Kate, and Sonia Fahmy
    To appear at WWW, 2018.

  • Concurrency and Privacy with Payment-Channel Networks
    Giulio Malavolta*, Pedro Moreno-Sanchez*, Aniket Kate, Matteo Maffei, and Srivatsan Ravi
    ACM CCS 2017

  • SymCerts: Practical Symbolic Execution For Exposing Noncompliance in X.509 Certificate Validation Implementations
    Sze Yiu Chau, Omar Chowdhury, Endadul Hoque, Huangyi Ge, Aniket Kate, Cristina Nita-Rotaru, and Ninghui Li
    IEEE S&P (Oakland) 2017

  • P2P Mixing and Unlinkable Bitcoin Transactions: Anonymity of the people, by the people, and for the people
    Tim Ruffing, Pedro Moreno-Sanchez, and Aniket Kate
    NDSS 2017

  • SilentWhispers: Enforcing Security and Privacy in Decentralized Credit Networks
    Giulio Malavolta*, Pedro Moreno-Sanchez*, Aniket Kate, and Matteo Maffei
    NDSS 2017

  • Listening to Whispers of Ripple: Linking Wallets and Deanonymizing Transactions in the Ripple Network
    Pedro Moreno-Sanchez, Muhammad Bilal Zafar, and Aniket Kate
    PETS 2016

  • Strength in Numbers: Robust Tamper Detection in Crowd Computations ***Best Paper Award***
    Bimal Viswanath, Muhammad Ahmad Bashir, Muhammad Bilal Zafar, Simon Bouget, Saikat Guha, Krishna P. Gummadi, Aniket Kate, and Alan Mislove
    ACM COSN 2015

  • Liar, Liar, Coins on Fire! -- Penalizing Equivocation By Loss of Bitcoins
    Tim Ruffing, Aniket Kate, and Dominique Schroeder
    ACM CCS 2015

  • Privacy Preserving Payments in Credit Networks
    Pedro Moreno-Sanchez, Aniket Kate, Matteo Maffei, and Kim Pecina
    NDSS 2015

  • (Nothing else) MATor(s): Monitoring the Anonymity of Tor's Path Selection
    Michael Backes, Aniket Kate, Sebastian Meiser, and Esfandiar Mohammadi
    ACM CCS 2014

  • Asynchronous MPC with a Strict Honest Majority Using Non-equivocation
    Michael Backes, Fabian Bendun, Ashish Choudhury, and Aniket Kate
    ACM PODC 2014

  • AnoA: A Framework For Analyzing Anonymous Communication Protocols
    Michael Backes, Aniket Kate, Praveen Manoharan, Sebastian Meiser, and Esfandiar Mohammadi
    IEEE CSF 2013

  • Towards Practical Communication in Byzantine-Resistant DHTs
    Maxwell Young, Aniket Kate, Ian Goldberg, and Martin Karsten
    IEEE/ACM Transactions on Networking (ToN), Vol. 21 Iss. (1), February 2013


  • Ph.D. Students
    • Sze Yiu Chau (with Prof. Ninghui Li)
    • Debajyoti Das
    • Duc V Le (with Prof. Mike Atallah)
    • Donghang Lu
    • Easwar V Mangipudi
    • Mohsen Minaei
    • Pedro Moreno-Sanchez (graduating)
    • Tim Ruffing (with Prof. Dominique Schroder) (graduating)
  • Undergraduate Advisees and Interns
    • Dhairya M Doshi
    • Mahimna Kelkar
    • Krutarth R. Rao
  • Alumni
    • Siddharth Gupta (Master Thesis, CERIAS, Purdue University), April 2017
    • Simon Heinzel (Master Thesis, Saarland University), Feb 2016
    • Tobias Theobald (Master Thesis, Saarland University), Dec 2015
    • Uzair Mahmood (Master Thesis, Saarland University), Oct 2015
    • Ivan Pryvalov (Master Thesis, Saarland University), Feb 2015
    • Niklas Grimm (Bachelor Thesis, Saarland University), July 2013

    I am actively looking for a talented and motivated PhD student interested in cryptography and distributed computing/systems to solve some exciting problems with blockchains and cryptocurrencies. I encourage the suitable candidates to apply to our grad program.


  • Selected Program Committee
    2019[Oakland '19], [PETS '19]
    2018[CCS '18], [Usenix Security '18], [NDSS '18], [PETS '18], [ICDCS '18], [ACNS '18], [Bitcoin '18]
    2017[CCS '17], [CSF '17], [ACNS '17], [WPES '17], [Bitcoin '17], [ICDCS '17]
    2016 [Eurocrypt '16], [ACNS '16], [FC '16], [Bitcoin '16], [ICDCS '16]
    2015 [CCSW '15], [WPES '15], [CloudCom '15], [ICDCS '15] [ProvSec '15]
    2014[ProvSec '14]
    2013 [WWW '13 (Security, Privacy, Trust, and Abuse)]
    2012 [WPES '12]
  • Organization
    [CCS 2016] Poster/Demo co-Chair
  • Selected Journals Reviewer
    ACM TISSec, Computer Security, Acta Informatica, IEEE Transactions on Information Theory, IEEE TDSC, Designs, Codes and Cryptography (DCC), IEEE TIFS, Distributed Computing, IEEE TPDS, IEEE Transactions on Computers, Information Processing Letters (IPL), IEEE Security and Privacy.
  • Grant Program Committee Member for the Bitcoin Foundation, 2014.
  • NWG-Representative at the MMCI Clusterboard, Saarland University, 2013-15.
  • Overall Coordinator at SecNet 2006, Annual Network Security Workshop, IIT-Bombay, India, 2006.


@Saarland University


Contact Information

305 N. University Street
(Department of Computer Science)
West Lafayette, IN 47907-2107

Phone: +1-765-496-2763 (Email is preferred in general.)
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Copyright © 2015-18 Aniket Kate, Purdue University.