$ 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
IS_THIS_LCG
#multiprime-rsa#truncated-lcg#ec-lcg#lll (lll-lattice-reduction)
 RCTF 2022 – Crypto files wu 1
S2DH
#sidh#castryck-decru#torsion-point
 RCTF 2022 – Crypto files wu 1
HackChain
#solidity#delegatecall#function-pointer-jump
 RCTF 2021 – Crypto files wu 1
Uncommon_Factors_II
#rsa#implicit-factoring#lll (lll-lattice-reduction)
 RCTF 2021 – Crypto files wu 1
RePairing RCTF 2025 – Crypto files
SuanHash RCTF 2025 – Crypto files
SuanP01y RCTF 2025 – Crypto files
f_l_and_ag++ RCTF 2025 – Crypto files
superguess++ RCTF 2025 – Crypto files
yet_another_MT_game RCTF 2025 – Crypto files
yet_another_shuffled_MT_game RCTF 2025 – Crypto files
Clearlove RCTF 2022 – Crypto files
Derek RCTF 2022 – Crypto files
easyRSA RCTF 2022 – Crypto files
guess RCTF 2022 – Crypto files
magic_sign RCTF 2022 – Crypto files