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Cryptography: The Key to Digital Security, How It Works, and Why It Matters by Keith Martin

Cryptography: The Key to Digital Security, How It Works, and Why It Matters

by Keith Martin
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Book cover type: Paperback
  • ISBN13: 9780393867459
  • Binding: Paperback
  • Subject: N/A
  • Publisher: W. W. Norton & Company
  • Publisher Imprint: W. W. Norton & Company
  • Publication Date:
  • Pages: 320
  • Original Price: USD 16.95
  • Language: English
  • Edition: N/A
  • Item Weight: 182 grams
  • BISAC Subject(s): Security / Cryptography & Encryption and Internet / Online Safety & Privacy

Despite 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. He demystifies its controversial applications and the nuances behind alarming headlines about data breaches at banks, credit bureaus, and online retailers. We learn, for example, how encryption can hamper criminal investigations and obstruct national security efforts, and how increasingly frequent ransomware attacks put personal information at risk. Yet we also learn why responding to these threats by restricting the use of cryptography can itself be problematic.

Essential reading for anyone with a password, Cryptography offers a profound perspective on personal security, online and off.

Martin, Keith: - Keith Martin is a professor of information security at Royal Holloway, University of London, and has worked in cryptographic research for thirty years. He lives in Surrey, United Kingdom.

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