The Cipher Challenge Contest
Four degrees of difficulty, from pen & paper to complex mathematical problems
Solved Level 2 challenge Lightweight Introduction to Lattices — Part 3
Solved Level 1 challenge Lightweight Introduction to Lattices — Part 2
Solved Level 1 challenge Lightweight Introduction to Lattices — Part 1
Solved Level 1 challenge A hidden word
Solved Level 2 challenge Letter to the Templars — Part 3
Solved Level 1 challenge Letter to the Templars — Part 2
Solved Level 1 challenge Grille Cipher
Solved Level 2 challenge Merkle-Hellman Knapsack Challenge — Part 2
Four degrees of difficulty, from pen & paper to complex mathematical problems