There are many books on Web security and cryptography. We recommend the following books—in no particular order—which cover topics relevant to those discussed in Chapter 9:
Web Security, L. Stein (Addison Wesley). An excellent, comprehensive book with sufficient technical and nontechnical depth.
Web Security and Commerce, S. Garfinkel and S. Spafford (O'Reilly). A good introductory book that explains the topics in nontechnical language.
Applied Cryptography: Protocols, Algorithms, and Source Code in C, B. Schneier (John Wiley and Sons). Covers the field of cryptography in technical depth.
The Code Book, S. Singh (Anchor Books). An enjoyable popular science book.
The RSA encryption web site, http://www.rsa.com.
SSL extensions and patches for Apache: http://www.apache-ssl.org, http://www.modssl.org/, http://www.openssl.org/source/.
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