# Puzzles

### From charlesreid1

# Fall 2016 Puzzles

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

Puzzles for Computer Science classes, fall 2016. These are primarily focused on simple-to-implement ciphers (Caesar, affine, OTP) and a little bit of game theory.

Puzzles/Fall 2016/Puzzle 1: Hello POOKIE (Java encoded with Caesar cipher)

Puzzles/Fall 2016/Puzzle 2: Et tu, brute? (Caesar cipher cryptograms with spaces)

Puzzles/Fall 2016/Puzzle 3: Et three, brute? (Caesar cipher cryptograms with no spaces (frequency or brute force)

Puzzles/Fall 2016/Puzzle 4: (Affine cipher, modular arithmetic, gcd, Euclid's algorithm)

Puzzles/Fall 2016/Puzzle 5: Toga Party (Blocks of 8 integers, numbers -> letters -> message directly)

Puzzles/Fall 2016/Puzzle 6: Game of Drones (Game theory with pairs of drones)

Puzzles/Fall 2016/Puzzle 7: (OTP - modular arithmetic, chunks of data, first line of novels as OTP keys)

Puzzles/Fall 2016/Puzzle 8: (OTP with generating token)

Puzzles/Fall 2016/Puzzle 9: (Eddington and the Sand-Reckoner)

Puzzles/Fall 2016/Puzzle 10: (Final Challenge Puzzle)

# References

## Related Wiki Pages

## External Links

Crypto math: http://www.math.brown.edu/%7Ejhs/MathCrypto/MCOnlineExercises.html

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

handbook of applied cryptography: all chapters provided for free: http://cacr.uwaterloo.ca/hac/

# Flags

Puzzles
Puzzle clues: Puzzles/Clues Puzzles/Fall 2016/Puzzle 1: Hello POOKIE Puzzles/Fall 2016/Puzzle 2: Et Tu, Brute? Puzzles/Fall 2016/Puzzle 3: Et Three, Brute? Puzzles/Fall 2016/Puzzle 4: Caffeine Cipher Puzzles/Fall 2016/Puzzle 5: Toga Party Puzzles/Fall 2016/Puzzle 6: Game of Drones Puzzles/Fall 2016/Puzzle 7: Once Upon A Time Pad Puzzles/Fall 2016/Puzzle 8: The Numbers Factory Puzzles/Fall 2016/Puzzle 9: The Biggest Number You've Ever Laid Eyes On Puzzles/Fall 2016/Puzzle 10: The Final Challenge
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