Threshold Raccoon: Practical Threshold Signatures from Standard Lattice Assumptions

ePrint Report: Threshold Raccoon: Practical Threshold Signatures from Standard Lattice Assumptions

Rafael del Pino, Shuichi Katsumata, Mary Maller, Fabrice Mouhartem, Thomas Prest, Markku-Juhani Saarinen

Threshold signatures improve both availability and security of digital signatures by splitting the signing key into $N$ shares handed out to different parties. Later on, any subset of at least $T$ parties can cooperate to produce a signature on a given message. While threshold signatures have been extensively studied in the pre-quantum setting, they remain sparse …

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