Key-and-Signature Compact Multi-Signatures: A Compiler with Realizations

ePrint Report: Key-and-Signature Compact Multi-Signatures: A Compiler with Realizations

Shaoquan Jiang, Dima Alhadidi, Hamid Fazli Khojir

Multi-signature is a protocol where a set of signatures jointly sign a message so that the final signature is significantly shorter than concatenating individual signatures together. Recently, it finds applications in blockchain, where several users want to jointly authorize a payment through a multi-signature. However, in this setting, there is no centralized authority and it could suffer from a rogue key attack where the …

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