Codes and Ciphers.
Main Sections | |
Mono-alphabetic ciphers.Caesar shift, keyword, random substitution, affine shift etc. Grid ciphers. (Playfair etc.)Playfair and double playfair. Transposition ciphers. (Railfence etc.)Railfence, shuffle etc. |
Poly-alphabetic ciphers ciphers. (Viginere etc.)Viginere, autokey, onetime pad, digraph etc. Frequency Analysis.Excel (2003!) programming, tables and standard results etc. Excel Code Tools. How to make tools to use in codebreaking with EXCEL and VBA |
National Cipher ChallengeThis is a National code breaking competition running from September to December. It is organised by Bletchley Park, Cambridge University and GCHQ. | |
Useful LinksCipher Challenge. The national cipher cracking competition homepage. Bletchley Park resources page. Bletchley Park was Britains code breaking HQ during WWII. This page contains lesson plans and downloadable goodies. Simon Singh's Homepage. Simon Singh is the author of "The Codebook". His website provides an excellent introduction to the whole are a of codes, ciphers and code breaking. Cryptology Links Page This page has a huge number of code cracking resources. We can't vouch for what they might do to your computer though! Wikipedia Wikipedia has lots of very useful pages on all the ciphers that you are likely to encounter in the Cipher Challenge competition. Nova TV Nazi Secrets page. This has a few pages on real cipher systems and three very, very hard decryption problems. |
last updated 11th September 2011