Breaking the shared key in threshold signature schemes

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 […]

February 20, 2024
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Billion times emptiness

By Max Ammann Behind Ethereum’s powerful blockchain technology lies a lesser-known challenge that blockchain developers face: the intricacies of writing robust Ethereum ABI (Application Binary Interface) parsers. Ethereum’s ABI is critical to the blockchain’s infrastructure, enabling seamless interactions between smart contracts and external applications. The complexity of data types and the need for precise encoding […]

December 29, 2023
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