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Category Web Pwn Reverse Crypto Forensics Misc OSINT Stego Blockchain Hardware Mobile

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Higher weight ≈ harder, more prestigious event.

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Challenge	CTF	Weight	Category	Has
winter #winternitz #hash-based-signature #key-reuse #forgery	DiceCTF 2024 Quals	54.40	Crypto	files wu 3
Three-Time_Pad #many-time-pad #key-reuse	UIUCTF 2023	–	Crypto	files src wu 2
OTP3 #two-time-pad #key-reuse	BlueHens 2021	22.62	Crypto	files wu 1
almost_perfect #vigenere #word-frequency-analysis #key-reuse	OMH 2021	–	Crypto	files wu 1