The Crypto Challenge Contest
Four degrees of difficulty, from pen & paper to complex mathematical problems
Solved Level 2 challenge Factorization Cipher — Part 3
Solved Level 2 challenge Homophonic Encryption — Part 2
Solved Level 2 challenge Homophonic Encryption — Part 1
Solved Level 1 challenge ¿No Hablas Español? No problemo!
Solved Level 1 challenge Cryptanalysis Hacking Puzzles — Part 2
Solved Level 2 challenge M-138 — Part 3
Solved Level 2 challenge Factorization Cipher — Part 2
Solved Level 2 challenge Molehunt (Part 3/3)
Four degrees of difficulty, from pen & paper to complex mathematical problems