Cryptology II.2 Bitblock Ciphers, Feistel, and SP Networks

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This chapter contains basic facts about bitblock ciphers and some approaches to their construction.

1. Bitblock ciphers—Introduction [PDF].
2. Polynomials over finite fields [PDF].
3. Algebraic cryptanalysis [PDF].
4. SP networks [PDF].
5. Feistel networks [PDF].
6. Algebraic attacks for few rounds [PDF].
7. Lucifer [PDF].

The complete Section II.2 as an PDF file. Here are the value tables of the S-boxes of Lucifer as well as C source code for Lucifer written by Jonathan M. Smith.