But if you want to know how to implement a protocol that uses Diffie Hellman, RSA, AES and SHA1 to protect traffic without introducing 40 errors any of which co

But if you want to know how to implement a protocol that uses Diffie Hellman, RSA, AES and SHA1 to protect traffic without introducing 40 errors any of which completely negate the security of the algorithms you're using, you need a very different book from Applied. That book was Practical Cryptography, and now it's Cryptography Engineering. Very nice! Since I wanted a book which also explains the implementation details of various cryptography algorithms, I asked my coworker if he knew one (I bought Kryptographie (Amazon.de: http://bit.ly/cxxAQT http://bit.ly/cxxAQT), which didn't explain anything about implementations, but is a good read for other various reasons). He recommended me Applied Cryptography and I was going to order it. This was yesterday. Today I read your tweet (http://twitter.com/tqbf/status/8879609339 http://twitter.com/tqbf/status/8879609339) and was going to have a look at Practical Cryptography. And now thanks to your hint, I preordered Cryptography Engineering. Thanks for that :).