Corera, Gordon. 2015. Intercept: The Secret History of Computers and Spies. London: Weidenfeld & Nicolson.
Dent, Alexander W., and Chris Mitchell. 2005a. User’s Guide to Cryptography and Standards. Vol. Artech House computer security series. Boston: Artech House. https://ebookcentral.proquest.com/lib/rhul/detail.action?docID=227658.
Dent, Alexander W., and Chris J. Mitchell. 2005b. User’s Guide to Cryptography and Standards. Vol. Artech House computer security series. Boston: Artech House. http://eu.alma.exlibrisgroup.com/view/action/uresolver.do?operation=resolveService&package_service_id=13399215330002671&institutionId=2671&customerId=2670.
Ferguson, Niels. 2010. Cryptography Engineering: Design Principles and Practical Applications. Indianapolis, IN: Wiley.
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Levy, Steven. 2002. Crypto: How the Code Rebels Beat the Government, Saving Privacy in the Digital Age. London: Penguin.
Martin, Keith M. 2017a. Everyday Cryptography: Fundamental Principles and Applications. Second edition. Oxford: Oxford University Press.
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Mel, H. X., and Doris Burnett. 2001. Cryptography Decrypted. Harlow: Addison-Wesley.
Piper, F. C., and Sean Murphy. 2002. Cryptography: A Very Short Introduction. New York: Oxford University Press.
Piper, Fred, and Sean Murphy. 2002. Cryptography: A Very Short Introduction. Vol. Very short introductions. Oxford: Oxford University Press. http://eu.alma.exlibrisgroup.com/view/action/uresolver.do?operation=resolveService&package_service_id=13398644790002671&institutionId=2671&customerId=2670.
Schneier, Bruce. 1996. Applied Cryptography: Protocols, Algorithms and Source Code in C. 2nd ed. New York: Wiley.
Singh, Simon. 2000. The Code Book: The Secret History of Codes and Codebreaking. London: Fourth Estate.
Stinson, Douglas R. 2006. Cryptography: Theory and Practice. 3rd ed. Vol. Discrete Mathematics and Its Applications. London: Chapman & Hall/CRC.