Though often invisible, cryptography plays a critical role in our
everyday lives. Broadly defined as a set of tools for establishing
security in cyberspace, cryptography enables us to protect our
information and share it securely. It underpins the security of
mobile phone calls, card payments, web connections, internet
messaging, Bitcoin transactions-in short, everything we do online.
Clearly and concisely, Keith Martin reveals the many crucial ways
we all rely on cryptographic technology and demystifies its
controversial applications and the nuances behind alarming
headlines about data breaches or Edward Snowden. Essential reading
for anyone with a password, Cryptography offers a profound
perspective on personal security, online and off.
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