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Start giftingCryptography
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Learn moreDespite its reputation as a language only of spies and hackers, cryptography plays a critical role in our everyday lives. Though often invisible, it underpins the security of our mobile phone calls, credit card payments, web searches, internet messaging, and cryptocurrencies—in short, everything we do online. Increasingly, it also runs in the background of our smart refrigerators, thermostats, electronic car keys, and even the cars themselves. As our daily devices get smarter, cyberspace—home to all the networks that connect them—grows.
Broadly defined as a set of tools for establishing security in this expanding cyberspace, cryptography enables us to protect and share our information. Understanding the basics of cryptography is the key to recognizing the significance of the security technologies we encounter every day, which will then help us respond to them.
What are the implications of connecting to an unprotected Wi-Fi network? Is it really so important to have different passwords for different accounts? Is it safe to submit sensitive personal information to a given app, or to convert money to bitcoin? In clear, concise writing, information security expert Keith Martin answers all these questions and more, revealing the many crucial ways we all depend on cryptographic technology.
Keith Martin is a professor of information security at Royal Holloway, University of London, and has worked in cryptographic research for thirty years. The author of Everyday Cryptography, he lives in Surrey, United Kingdom.
Matthew Waterson was born in Los Angeles and grew up in Britain. After finishing his BA at Tufts University in Boston, graduate study at LAMDA in London, and eight years in New York, he returned to LA. He has been fortunate enough to narrate books on subjects as varied as the history of South Africa, the current state of FIFA, and mysteries and dramas. He can also be heard on many video games, the Netflix series Trollhunters, and on the radio for companies such as Twinings Tea and Frank's Red Hot Sauce.