$ ctf42

Challenges

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

Challenge CTF Weight Category Has
bivalves
#z3#state-recovery
 PlaidCTF 2023 100.00 Crypto files wu 2
fastrology
#math-random-prediction#v8-xorshift#gf2-linear-algebra
 PlaidCTF 2023 100.00 Crypto files wu 1
the-other-css
#z3#lfsr#css-cipher
 PlaidCTF 2023 100.00 Crypto files wu 1
choreography
#slide-attack#feistel
 PlaidCTF 2022 93.67 Crypto files wu 1
Fake_Medallion
#quantum-cloning#mersenne-twister#quantum-money
 PlaidCTF 2021 99.64 Crypto files wu 1
leaky_block_cipher
#small-multiplicative-order#polynomial-factorization
 PlaidCTF 2021 99.64 Crypto files wu 2
xorsa
#xor-leak-factoring#bit-by-bit-factoring#rsa
 PlaidCTF 2021 99.64 Crypto files wu 3
MPKC
#multivariate-crypto#linear-part-recovery#groebner-basis
 PlaidCTF 2020 93.15 Crypto files wu 2
dyrpto
#coppersmith-short-pad#franklin-reiter#rsa#small-e
 PlaidCTF 2020 93.15 Crypto files wu 2
sidhe
#sidh#adaptive-key-recovery#static-key-reuse
 PlaidCTF 2020 93.15 Crypto files wu 3
stegasaurus-scratch
#combinatorial-encoding#card-trick-protocol
 PlaidCTF 2020 93.15 Crypto files wu 3
Many_Mellons PlaidCTF 2025 100.00 Crypto files
TaLeS_from_the_Crypt PlaidCTF 2025 100.00 Crypto files
innov8 PlaidCTF 2025 100.00 Crypto files
pressure PlaidCTF 2022 93.67 Crypto files
Proxima_Concursus PlaidCTF 2021 99.64 Crypto files