$ ctf42

#ckks CTF challenges

2 CTF challenges using ckks from 2 CTFs (2022–2026), 2 with writeups. Mostly Crypto (50%) and Misc (50%).

Crypto · 1 Misc · 1

Often combined with

#lattice 2 #key-recovery 1 #rlwe 1 #microsoft-seal 1 #approximate-common-divisor 1

Challenges

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Challenge CTF Weight Category Has
learning-without-errors DiceCTF 2022 24.82 Crypto files wu 1
HEuristic R3CTF 2026 35.95 Misc files wu 1