Multi-Signatures for Ad-hoc and Privacy-Preserving Group Signing

ePrint Report: Multi-Signatures for Ad-hoc and Privacy-Preserving Group Signing

Anja Lehmann, Cavit Özbay

Multi-signatures allow to combine individual signatures from different signers on the same message into a short aggregated signature. Newer schemes further allow to aggregate the individual public keys, such that the combined signature gets verified against a short aggregated key. This makes them a versatile alternative to threshold or distributed signatures: the aggregated key can serve as group key, and signatures under that key can only be …

eprint report key keys message privacy public public keys report signature signatures signing verified