Puzzles

Crypto Puzzles

Level 1

Level 1 crypto puzzles:

Puzzles/Crypto Level 1/Puzzle 1 - Java encoded with Caesar cipher

Puzzles/Crypto Level 1/Puzzle 2 - more Caesar cipher cryptograms, with spaces

Puzzles/Crypto Level 1/Puzzle 3 - Caesar cipher cryptograms, no spaces (frequency or brute force)

Puzzles/Crypto Level 1/Puzzle 4 - blocks of 8 digit integers, rot 13, filled in with z's

Puzzles/Crypto Level 1/Puzzle 5 - blocks of 8 digit integers, rot non-13, filled in with z's

Puzzles/Crypto Level 1/Puzzle 6 - Affine cipher

Puzzles/Crypto Level 1/Puzzle 7 - OTP

Puzzles/Crypto Level 1/Puzzle 8 - OTP with generating token

Puzzles/Crypto Level 1/Puzzle 9 - Enigma

Level 2

Level 2 crypto puzzles:

Puzzles/Crypto Level 2/Puzzle 1 - Java encoded with Caesar cipher

Puzzles/Crypto Level 2/Puzzle 2 - more Caesar cipher cryptograms, no spaces (frequency or brute force)

Puzzles/Crypto Level 2/Puzzle 3 - Caesar encoded with numbers in blocks of 8

Puzzles/Crypto Level 2/Puzzle 4 - Affine cipher, gcd, Euclid's algorithm

Puzzles/Crypto Level 2/Puzzle 5 - Modular arithmetic, multiplicative inverses, importance of prime modulus and factoring

Puzzles/Crypto Level 2/Puzzle 6 - Modular exponentiation, Fermat's Little Theorem, Euler's Theorem, relative prime

Puzzles/Crypto Level 2/Puzzle 7 - RSA baby steps

Puzzles/Crypto Level 2/Puzzle 8 - RSA bigger numbers

Puzzles/Crypto Level 2/Puzzle 9 - Finite fields - modular arithmetic with a different radix/base