Revision as of 08:07, 24 September 2016

Crypto Puzzles

The following cryptopuzzles follow a common format. See Puzzles/Crypto Puzzles

Level 1 crypto puzzles: Puzzles/Crypto Level 1

Puzzles/Crypto Level 1/Puzzle 1: Hello POOKIE (Java encoded with Caesar cipher)

Puzzles/Crypto Level 1/Puzzle 2: Et tu, brute? (Caesar cipher cryptograms with spaces)

Puzzles/Crypto Level 1/Puzzle 3: Et three, brute? (Caesar cipher cryptograms with no spaces (frequency or brute force))

Puzzles/Crypto Level 1/Puzzle 4: Toga Party (Blocks of 8 integers, numbers -> letters -> message directly)

Puzzles/Crypto Level 1/Puzzle 5: Game of Drones (Game theory with pairs of drones)

Puzzles/Crypto Level 1/Puzzle 6 - Affine cipher ax+b (Affine cipher ax+b (modular arithmetic focus, gcd, Euclid's algorithm))

Puzzles/Crypto Level 1/Puzzle 7 - OTP - modular arithmetic, chunks of data, first line of novels as OTP keys.

Level 2 crypto puzzles: Puzzles/Crypto Level 2

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

(Finite fields? mod arithmetic with different base)

Nice collection of probability puzzles, solved with Python 3: https://github.com/BillCruise/Probability

@@ Line 7: / Line 7: @@
 Level 1 crypto puzzles: [[Puzzles/Crypto Level 1]]
-[[Puzzles/Crypto Level 1/Puzzle 1]] - Java encoded with Caesar cipher
+[[Puzzles/Crypto Level 1/Puzzle 1]]: Hello POOKIE (Java encoded with Caesar cipher)
-[[Puzzles/Crypto Level 1/Puzzle 2]] - Caesar cipher cryptograms with spaces
+[[Puzzles/Crypto Level 1/Puzzle 2]]: Et tu, brute? (Caesar cipher cryptograms with spaces)
-[[Puzzles/Crypto Level 1/Puzzle 3]] - Caesar cipher cryptograms with no spaces (frequency or brute force)
+[[Puzzles/Crypto Level 1/Puzzle 3]]: Et three, brute? (Caesar cipher cryptograms with no spaces (frequency or brute force))
-[[Puzzles/Crypto Level 1/Puzzle 4]] - Blocks of 8 integers, numbers -> letters -> message directly, filled in with DDDs
+[[Puzzles/Crypto Level 1/Puzzle 4]]: Toga Party (Blocks of 8 integers, numbers -> letters -> message directly)
-[[Puzzles/Crypto Level 1/Puzzle 5]] - Affine cipher ax+b (modular arithmetic focus, gcd, Euclid's algorithm)
+[[Puzzles/Crypto Level 1/Puzzle 5]]: Game of Drones (Game theory with pairs of drones)
-[[Puzzles/Crypto Level 1/Puzzle 6]] - Affine cipher ax+b (cipher focus)
+[[Puzzles/Crypto Level 1/Puzzle 6]] - Affine cipher ax+b (Affine cipher ax+b (modular arithmetic focus, gcd, Euclid's algorithm))
 [[Puzzles/Crypto Level 1/Puzzle 7]] - OTP - modular arithmetic, chunks of data, first line of novels as OTP keys.