$ ctf42

#known-plaintext-xor CTF challenges

3 CTF challenges using known-plaintext-xor from 3 CTFs (2022–2025), 3 with writeups.

Crypto · 3

Challenges

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Challenge CTF Weight Category Has
one-more-time-pad LA 2023 – Crypto files wu 2
XOR OFPPT 2022 – Crypto files wu 2
Cryptoclock NahamCon 2025 53.77 Crypto files wu 1