Hitesh Tewari is an applied cryptography researcher and computer scientist specializing in computer networks, cybersecurity, privacy, decentralized systems, and electronic payment systems. He is an Assistant Professor at Trinity College Dublin, where he leads the Applied Cryptography Research Lab and conducts research on privacy-preserving and decentralized technologies. His work examines the application of cryptographic and blockchain protocols beyond cryptocurrencies, including in digital payments, public health, environmental applications, and electronic voting.

Hitesh has been a member of Trinity College Dublin's academic faculty since 1997 and holds a BA (Mod), MSc, and Ph.D. in Computer Science from the university. He co-authored Electronic Payment Systems, a reference text on electronic payments that has sold more than 7,000 copies across two editions. His research has produced numerous conference and journal publications, and he joined the Ripple University Blockchain Research Initiative (UBRI) professorial network in 2023. He is also a co-developer of zkBallot, a privacy-preserving electronic voting platform designed to provide voter anonymity alongside public auditability, and InvizCrypt, a platform designed to enable collaboration on sensitive documents without allowing the platform provider to access their contents.