Sean Murphy is Professor of Mathematics at Royal Holloway, University of London. He has worked in cryptography for over thirty years and has a particular research interest in symmetric cryptography. His publications include Algebraic Aspects of the Advanced Encryption Standard (2006), co-authored by Carlos Cid and Matt Robshaw.Rachel Player is a Senior lecturer in the Information Security Group at Royal Holloway, University of London. Her research considers post-quantum cryptography, and she is best known for her work in lattice-based cryptanalysis and homomorphic encryption. In 2019 she received The Radiant Award for Advancing Internet Security from the Internet Security Research Group.

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• 1: The role of cryptography 2: Understanding cryptography 3: Historical cryptosystems 4: Perfect secrecy 5: Symmetric cryptography 6: Public-key cryptography 7: Post-quantum cryptography 8: Advanced cryptography 9: Cryptography in everyday life Mathematical background References Further reading Index

Sean Murphy is Professor of Mathematics at Royal Holloway, University of London. He has worked in cryptography for over thirty years and has a particular research interest in symmetric cryptography. His publications include Algebraic Aspects of the Advanced Encryption Standard (2006), co-authored by Carlos Cid and Matt Robshaw.Rachel Player is a Senior lecturer in the Information Security Group at Royal Holloway, University of London. Her research considers post-quantum cryptography, and she is best known for her work in lattice-based cryptanalysis and homomorphic encryption. In 2019 she received The Radiant Award for Advancing Internet Security from the Internet Security Research Group.

Select Guide Rating

• 1: The role of cryptography 2: Understanding cryptography 3: Historical cryptosystems 4: Perfect secrecy 5: Symmetric cryptography 6: Public-key cryptography 7: Post-quantum cryptography 8: Advanced cryptography 9: Cryptography in everyday life Mathematical background References Further reading Index

Sean Murphy is Professor of Mathematics at Royal Holloway, University of London. He has worked in cryptography for over thirty years and has a particular research interest in symmetric cryptography. His publications include Algebraic Aspects of the Advanced Encryption Standard (2006), co-authored by Carlos Cid and Matt Robshaw.Rachel Player is a Senior lecturer in the Information Security Group at Royal Holloway, University of London. Her research considers post-quantum cryptography, and she is best known for her work in lattice-based cryptanalysis and homomorphic encryption. In 2019 she received The Radiant Award for Advancing Internet Security from the Internet Security Research Group.

Select Guide Rating

• 1: The role of cryptography 2: Understanding cryptography 3: Historical cryptosystems 4: Perfect secrecy 5: Symmetric cryptography 6: Public-key cryptography 7: Post-quantum cryptography 8: Advanced cryptography 9: Cryptography in everyday life Mathematical background References Further reading Index