Real-World Cryptography teaches you applied cryptographic techniques to understand and apply security at every level of your systems and applications. You'll go hands-on with cryptography building blocks such as hash functions and key exchanges, then learn how to use them as part of your security protocols and applications. If you're browsing the web, using public APIs, making and receiving electronic payments, or experimenting with blockchain, you're relying on cryptography. And you're probably trusting a collection of tools, frameworks, and protocols to keep your data, users, and business safe. It's important to understand these tools so you can make the best decisions about how, where, and why to use them. Real-World Cryptography teaches you applied cryptographic techniques to understand and apply security at every level of your systems and applications. You'll go hands-on with cryptography building blocks such as hash functions and key exchanges, then learn how to use them as part of your security protocols and applications. Alongside modern methods, the book also explores the future of cryptography, diving into emerging and cutting-edge advances such as cryptocurrencies, password-authenticated key exchange, and post-quantum cryptography. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications.