$ ctf42

#legendre-symbol CTF challenges

2 CTF challenges using legendre-symbol from 1 CTF (2021), 2 with writeups.

Crypto · 2

Often combined with

#elgamal 1 #quadratic-residue 1 #aes-cbc 1 #oblivious-transfer 1

Challenges

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Challenge CTF Weight Category Has
ot_or_not_ot zer0pts 2021 24.56 Crypto files wu 2
janken_vs_yoshiking zer0pts 2021 24.56 Crypto files wu 2