Network Security & Applied Cryptography

Welcome to the Applied Cryptography Research Lab based in the School of Computer Science and Statistics at Trinity College Dublin.Our research group is focused on Network Security, Cryptography, Decentralisation and Privacy.

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Research Areas & Technologies

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Post-Quantum Cryptography

Developing and analyzing cryptographic algorithms resistant to attacks by quantum computers.

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Zero-Knowledge Proofs

Exploring ZKPs for privacy-preserving applications like voting, identity, and blockchain.

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Network Security & Decentralisation

Designing decentralized protocols and digital identity systems on blockchain.

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Research Projects

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Our research group focuses on developing practical applications of cryptography and blockchain technology. Here are some of our key projects:

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zkBallot : Privacy-Preserving eVoting

Zero-Knowledge ProofseVotingPrivacy

zkBallot is a next-generation eVoting system using zero-knowledge proofs to guarantee voter privacy and verifiable results. No identities or choices are ever revealed.

Privacy

Complete voter anonymity through advanced cryptographic techniques, ensuring vote secrecy.

Security

Votes are cryptographically secured and tamper-proof on the blockchain.

Verifiability

End-to-end verification without compromising privacy or revealing individual votes.

  • Private, verifiable voting
  • Public, privacy-preserving tally
  • Tamper-Proof Vote records
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Recent Events

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  • C
    November 2025Conference Presentation

    Presented 3 Research Papers at IEEE ICDLT 2025, Pune

    Presented three research papers at the IEEE International Conference on Distributed Ledger Technologies (ICDLT 2025) in Pune: The Zcash Protocol Explained, CarbonChainRL for Dynamic Carbon Trading, and A Blockchain-Native PKI on the XRP Ledger.

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    October 2025Workshop Talk

    PQC on XRPL: Cryptography at Work for Blockchain Workshop

    Atharva Lele presented at the Cryptography at Work for Blockchain Workshop II organized by XRPL Commons and Prof. Massimiliano Sala, University of Trento. In a focused 30-minute talk, he outlined the journey that made Post-Quantum Cryptography on XRPL feasible, covering design choices, engineering trade-offs, deterministic key generation, signature verification, and the roadmap to hybrid deployments.

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    September 2025Publication

    Papers Accepted at IEEE ICDLT 2025, Pune

    Our research papers, The Zcash Protocol Explained: A Journey into Privacy-Preserving Cryptography, CarbonChainRL - A Blockchain Oracle-Based Reinforcement Learning System for Dynamic Carbon Trading Markets, and A Blockchain-Native PKI: Secure X.509 Certificate Management on the XRP Ledger, were accepted at the IEEE International Conference on Distributed Ledger Technologies (ICDLT 2025) in Pune, India, highlighting our advances in privacy-preserving cryptography, blockchain oracles, and secure certificate management.

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    July 2025Lecture

    XRPL Commons Lecture: PQC for XRP

    Delivered an invited lecture on Post-Quantum Cryptography for the XRP Ledger at the XRPL Commons event in Paris, sharing insights on quantum-safe blockchain security with the global XRPL community.

Meet the Team

Prof. Hitesh Tewari

Prof. Hitesh Tewari

Principal Investigator

Atharva Lele

Atharva Lele

Research Assistant

Harsha Vardhan

Harsha Vardhan

Research Assistant

Get In Touch

We welcome collaboration inquiries, questions about our research, and prospective students.

Address:School of Computer Science and Statistics, Trinity College Dublin, Ireland
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