$ ctf42

Challenges

Category
Difficulty
CTFtime weight
–
Higher weight ≈ harder, more prestigious event.
Year
–
Must have
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26 challenges · browse all techniques

Challenge CTF Weight Category Has
zer0lfsr
#lfsr#stream-cipher-cryptanalysis#correlation-attack
 0CTF 2021 Quals – Crypto files wu 1
Fully_Hidden_Evaluation 0CTF 2025 24.34 Crypto files
Nightfall_Tempest_Trials 0CTF 2025 24.34 Crypto files
ZKpuzzle1 0CTF 2025 24.34 Crypto files
ZKpuzzle2 0CTF 2025 24.34 Crypto files
ZKpuzzle3 0CTF 2025 24.34 Crypto files
baby_discriminator 0CTF 2025 24.34 Crypto files
Signin 0CTF 2024 24.34 Crypto files
ZKPQC_1 0CTF 2024 24.34 Crypto files
ZKPQC_2 0CTF 2024 24.34 Crypto files
dbot 0CTF 2024 24.34 Crypto files
Double_RSA_0 0CTF 2023 – Crypto files
Double_RSA_1 0CTF 2023 – Crypto files
Double_RSA_2 0CTF 2023 – Crypto files
Double_RSA_3 0CTF 2023 – Crypto files
Isolate 0CTF 2023 – Crypto files
blocky_4.5 0CTF 2023 – Crypto files
blocky_4.5_lite 0CTF 2023 – Crypto files
chimera 0CTF 2022 100.00 Crypto files
ezRSA_plusplus 0CTF 2022 100.00 Crypto files
leopard 0CTF 2022 100.00 Crypto files
real_magic_dlog 0CTF 2022 100.00 Crypto files
cloudpass 0CTF 2021 Quals – Crypto files
zer0lfsrplus 0CTF 2021 Quals – Crypto files
zer0lfsrplusplus 0CTF 2021 Quals – Crypto files
Baby RSA 0CTF 2019 Quals – Crypto files src