cryptomedium
heist
hxp_39c3
Task: forge a signature for a weakened Unbalanced Oil-and-Vinegar (UOV) multivariate quadratic scheme. Solution: recover the Oil subspace by finding the common kernel of polar form matrices of the public polynomials, then solve a linear system to construct a valid signature.
$ ls tags/ techniques/
uov_attackkernel_intersectionsignature_forgery
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