The Cipher Challenge Contest
Four degrees of difficulty, from pen & paper to complex mathematical problems
Solved Level 2 challenge Modified Vigenère Cipher
Solved Level 2 challenge "The Road" — Part 1
Solved Level 2 challenge Bigram Substitution – Part 2
Solved Level 1 challenge Find the right route — Part 2
Solved Level 1 challenge Find the right route — Part 1
Solved Level 3 challenge Vinaigrette Signature Scheme
Solved Level 1 challenge Merkle-Hellman Knapsack Challenge - Part 1
Solved Level 1 challenge Bigram Substitution – Part 1 (Tutorial)
Four degrees of difficulty, from pen & paper to complex mathematical problems