That made me think of this book
Handbook of Applied Criptography
Price as of November 19, 2002: US $99.95
If you go to this site you can download the book for FREE
CRC Press has generously given us permission to make all chapters available for free download.
http://www.cacr.math.uwaterloo.ca/hac/
The book is in postscript and pdf
Here is the chapters
Chapter 1 - Overview of Cryptography ps pdf
Chapter 2 - Mathematics Background ps pdf
Chapter 3 - Number-Theoretic Reference Problems ps pdf
Chapter 4 - Public-Key Parameters ps pdf
Chapter 5 - Pseudorandom Bits and Sequences ps pdf
Chapter 6 - Stream Ciphers ps pdf
Chapter 7 - Block Ciphers ps pdf
Chapter 8 - Public-Key Encryption ps pdf
Chapter 9 - Hash Functions and Data Integrity ps pdf
Chapter 10 - Identification and Entity Authentication ps pdf
Chapter 11 - Digital Signatures ps pdf
Chapter 12 - Key Establishment Protocols ps pdf
Chapter 13 - Key Management Techniques ps pdf
Chapter 14 - Efficient Implementation ps pdf
Chapter 15 - Patents and Standards ps pdf
Appendix - Bibliography of Papers from Selected Cryptographic Forums ps pdf
References ps pdf
Index ps pdf
