Subset-optimized BLS Multi-signature with Key Aggregation

ePrint Report: Subset-optimized BLS Multi-signature with Key Aggregation

Foteini Baldimtsi, Konstantinos Kryptos Chalkias, Francois Garillot, Jonas Lindstrom, Ben Riva, Arnab Roy, Alberto Sonnino, Pun Waiwitlikhit, Joy Wang

We propose a variant of the original Boneh, Drijvers, and Neven (Asiacrypt '18) BLS multi-signature aggregation scheme best suited to applications where the full set of potential signers is fixed and known and any subset $I$ of this group can create a multi-signature over a message $m$. This setup is very common in …

aggregation applications asiacrypt ben blockchains eprint report key message report sign signature transactions