The Crypto Challenge Contest
Four degrees of difficulty, from pen & paper to complex mathematical problems
Solved Level 1 challenge A hidden word
Solved Level 1 challenge Number Sequence — Part 4
Solved Level 1 challenge Number Sequence — Part 3
Solved Level 2 challenge Cracking SHA1-Hashed Passwords
Solved Level 2 challenge Cracking SHA1-Hashed Passwords
Solved Level 2 challenge Cracking SHA1-Hashed Passwords
Solved Level 2 challenge Cracking SHA1-Hashed Passwords
Solved Level 2 challenge Kaskade-S/T — Part 3
Four degrees of difficulty, from pen & paper to complex mathematical problems