Chapter 5

Fundamentals of Cryptography and Public Key Infrastructure (PKI)

This chapter covers the following topics:

Cryptography

Block and Stream Ciphers

Symmetric and Asymmetric Algorithms

Hashes

Digital Signatures

Next-Generation Encryption Protocols

IPsec and SSL/TLS

Fundamentals of PKI

Root and Identity Certificates

Revoking Digital Certificates

Using Digital Certificates

This chapter discusses the fundamental components of cryptography, including algorithms for hashing, encryption, and key management, which may be used by virtual private networks, secure web connections, and many other applications.

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