Sean Murphy

Sean Murphy is a Professor in the Department of Mathematics at Royal Holloway, University of London. His research focuses on cryptography, mathematics, and computer security, with contributions to lattice-based cryptography, cryptographic protocols, and algorithmic number theory. He has authored books including Cryptography A Very Short Introduction (2025) and published widely in journals and conferences.

His work addresses topics such as Ring-LWE decryption frameworks, homomorphic encryption precision, and boolean ring equation solving. Murphy's research emphasizes both theoretical advancements and practical applications in cryptographic systems.