$ ctf42

Challenges

Category
Difficulty
CTFtime weight
–
Higher weight ≈ harder, more prestigious event.
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Must have
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17 challenges · browse all techniques

Challenge CTF Weight Category Has
Clever_Thinking
#ecc#ecdlp#discrete-log
 UofTCTF 2024 23.90 Crypto files wu 1
Export_Grade_Cipher
#chosen-plaintext#custom-cipher
 UofTCTF 2024 23.90 Crypto files wu 1
Pianoman
#rsa#steganography
 UofTCTF 2024 23.90 Crypto files wu 2
Wheel_Barrow
#burrows-wheeler-transform
 UofTCTF 2024 23.90 Crypto files wu 2
repeat
#repeating-key-xor
 UofTCTF 2024 23.90 Crypto files wu 3
Gamblers_Fallacy UofTCTF 2026 33.49 Crypto files
Leaked_d UofTCTF 2026 33.49 Crypto files
MAT247 UofTCTF 2026 33.49 Crypto files
MAT347 UofTCTF 2026 33.49 Crypto files
Orca UofTCTF 2026 33.49 Crypto files
Rotor_Cipher UofTCTF 2026 33.49 Crypto files
UofT_LFSR_Labyrinth UofTCTF 2026 33.49 Crypto files
causation UofTCTF 2025 23.90 Crypto files
enchanted-oracle UofTCTF 2025 23.90 Crypto files
funny-cipher UofTCTF 2025 23.90 Crypto files
shuffler UofTCTF 2025 23.90 Crypto files
timed-aes UofTCTF 2025 23.90 Crypto files