I am a Professor in the Information Security Group at Royal Holloway. I am currently Director of Graduate Studies. My main general research areas are cryptography and information security, with interests in discrete mathematics and online education. I teach on Royal Holloway's: MSc Information Security (campus) MSc Information Security (online) I am an Associate Editor for Complexity and Cryptography for IEEE Transactions on Information Theory I edit the Information Security Group Review 06/07 07/08 08/09