By Fredrik Dahlgren Today we are disclosing a denial-of-service vulnerability that affects the Pedersen distributed key generation (DKG) phase of a number of threshold signature scheme implementations based on the Frost, DMZ21, GG20, and GG18 protocols. The vulnerability allows a single malicious participant to surreptitiously raise the threshold required to reconstruct the shared key, which […]

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Lauren Miorcec

Source: Security Boulevard
Source Link: https://securityboulevard.com/2024/02/breaking-the-shared-key-in-threshold-signature-schemes/