#signature-forgery CTF challenges

8 CTF challenges using signature-forgery from 8 CTFs (2018–2025), 8 with writeups. Mostly Crypto (62%) and Misc (25%).

Crypto · 5 Misc · 2 Web · 1

Often combined with

#ecdsa 2 #masked-key-recovery 1 #modular-inverse 1 #lcg-nonce 1 #weak-nonce 1 #nonce-bruteforce 1 #rsa 1 #seed-bruteforce 1 #weak-prng 1 #checksum-bypass 1 #winternitz-ots 1 #schnorr 1 #nonce-reuse 1

Challenges

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