cryptoPromedium

UofT LFSR Labyrinth

uoftctf2026

Given an LFSR with a WG-style (Welch-Gong) nonlinear filter, 80 bits of keystream output, and an encrypted flag.

$ ls tags/ techniques/
lfsrsat-solverstream-cipherwg-filterstate-recovery
sat_cryptanalysistseitin_transformationlfsr_state_recovery
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