applied cryptography - protocols, algorithms, and source code in c

Chapters 16 and 17 discuss stream algorithms chapter

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Unformatted text preview: 4, and 15 discuss other block algorithms; if you want something more secure than DES, skip to the section on IDEA and triple–DES. If you want to read about a bunch of algorithms, some of which may be more secure than DES, read the whole chapter. Chapters 16 and 17 discuss stream algorithms. Chapter 18 focuses on one–way hash functions; MD5 and SHA are the most common, although I discuss many more. Chapter 19 discusses public–key encryption algorithms, Chapter 20 discusses public–key digital signature algorithms, Chapter 21 discusses public–key identification algorithms, and Chapter 22 discusses public–key key exchange algorithms. The important algorithms are RSA, DSA, Fiat–Shamir, and Diffie–Hellman, respectively. Chapter 23 has more esoteric public–key algorithms and protocols; the math in this chapter is quite complicated, so wear your seat belt. Chapters 24 and 25 (Part IV) turn to the real world of cryptography. Chapter 24 discusses some of the current implementations of these algorithms and protocols, while Chapter 25 touches on some of the political issues surrounding cryptography. These chapters are by no means intended to be comprehensive. Also included are source code listings for 10 algorithms discussed in Part III. I was unable to include all the code I wanted to due to space limitations, and cryptographic source code cannot otherwise be exported. (Amazingly enough, the State Department allowed export of the first edition of this book with source code, but denied export for a computer disk with the exact same source code on it. Go figure.) An associated source code disk set includes much more source code than I could fit in this book; it is probably the largest collection of cryptographic source code outside a military institution. I can only send source code disks to U.S. and Canadian citizens living in the U.S. and Canada, but hopefully that will change someday. If you are interested in implementing or playing with the cryptographic algorithms in this book, get the disk. See the la...
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