$ ctf42

#homomorphic-encryption CTF challenges

2 CTF challenges using homomorphic-encryption from 2 CTFs (2025–2026), 1 with writeups. Mostly Crypto (50%) and Misc (50%).

Crypto · 1 Misc · 1

Often combined with

#length-extension 1 #paillier 1 #tfhe 1 #programmable-bootstrapping 1

Challenges

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Challenge CTF Weight Category Has
Encrypted_Activation R3CTF 2026 35.95 Misc files wu 1
yet_another_login DownUnderCTF 2025 91.66 Crypto files src