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The Illustrated Network by Walter Goralski

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CHAPTER 23 Securing Sockets with SSL

What You Will Learn

In this chapter, you will learn about the secure sockets layer (SSL) and how it is used on Web sites. We investigate the layers and operation of the SSL protocol and discuss the SSL’s use of certificates.

You will learn about the public key infrastructure (PKI) and how public keys are used for encryption. We present a simple example of public key encryption and decryption using only a pocket calculator and no advanced mathematics.

Web site security and user authentication were not much of a concern in the HTTP chapter. But the popularity of the Web for e-commerce is based on trusting that the transactions sent over the Internet are secure. To most users, this means two things:

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