Freedom Research Lab

Freedom Lab logo

Welcome to the Freedom Research Lab at Purdue University!

The Freedom Research Lab is situated in the Computer Science Department at Purdue university since Fall 2015. The lab is headed by Prof. Aniket Kate, and is also associated with the Center for Education and Research in Information Assurance and Security (CERIAS) at Purdue university.

Our lab performs people-centric privacy and security research using cryptography, distributed computing, and data analysis. We design, implement, and analyze systems for enhancing privacy, transparency and accountability over the Internet. Our current research projects majorly focuses on cryptocurrencies and blockchain technologies, anonymity networks and Tor, accountable data transfers, and secure deletions of archived data.

Our work is supported by NSF, Northrop Grumman, Intel, Purdue Research Foundation, and the German Universities Excellence Initiative.


Aniket Kate
(Group Leader)

Sze Yiu Chau
(PhD Candidate)

Debajyoti Das
(Graduate Student)

Mahimna Kelkar
(Undergraduate Student)

Duc V. Le
(Graduate Student)

Easwar V. Mangipudi
(Graduate Student)

Mohsen Minaei
(PhD Candidate)

Pedro Moreno-Sanchez

Pedro Moreno-Sanchez
(PhD Candidate)

Krutarth R. Rao
(Undergraduate Student)

Tim Ruffing
(PhD Candidate)



— Financial Freedom

Blockchains, Credit Networks, Cryptocurrencies, Smart Contracts

We are observing an unprecedented growth of decentralized crypto-currencies (e.g., Bitcoin), payment networks (e.g., Ripple), and commercial blockchain solutions (e.g., Hyperledger). Through our several projects, we are not only improving security, privacy, and reliability of these inherently decentralized systems, but also exploring applications of these technologies to supply chains and beyond.

For more information, follow the project webpage.

— Communication Freedom

Anonymity Networks, Censorship Evasion, Web Analytics Privacy

We design and analyze efficient, provably secure cryptographic solutions for anonymity networks (e.g., Tor) and privacy in the emerging scenarios (e.g., online advertising) over the Internet. Recently, we are also pursuing topics such as finding lower-bounds on communication anonymity, and bootstrapping censorship-evasive communication.

— Accountability and Transparency

Data Provenance, Sybil-tolerance, Accountable Anonymity

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 that allows system operators to detect computations manipulated by a variety of attacker strategies without going after the individual Sybil nodes.

— Right to Conceal

Longitudinal Privacy, Information Escrows

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, cyberbullies, and blackmailers.

Recent News


Prof. Aniket Kate
Computer Science Department, Purdue University
305 N. University Street
West Lafayette, IN 47907-2107