Ciphers - Spring 2010 --

Spring 2010 443 Cipher 1- simple substitution - easy version .

Spring 2010 443 Cipher 1a- simple substitution - harder version..

Spring 2010 Cipher 2- columnar transpostion- easy version

Spring 2010 Cipher 2a - columnar transposition- harder version..

Spring 2010 Cipher 3- Vigenere cipher- easy version .

Spring 2010 Cipher 3a- Vigenere cipher - difficult version

Spring 2010 cipher 4 easy version homophonic cipher .

Spring 2010 cipher 4 difficult version knapsack cipher -

Cipher 5a - RSA cipher easy version

Cipher 5b - RSA cipher difficult version

Cipher 6 - ElGamal cipher easy version