Schnell Verifizierbare Aggregatsignaturen

Details

Veröffentlichungs-Nr.

EP4343599

Aktenzeichen

EP22197596

Anmeldetag

23. September 2022

Veröffentlichung

12. März 2025

Erteilung

12. März 2025

Rechtsraum

EP

IPC

G06F21/64H04L9/00H04L9/32

Abstract

A method for aggregating digital signatures comprises the following steps carried out by a signature aggregator: receiving first data packages from signers, each first data package comprising a signer identifier, a payload, and a payload signature; verifying the payload signatures to determine whether or not the payloads are correctly signed; bundling correctly signed payloads into a batch; obtaining a batch digest, and proofs of inclusion of the payloads in the batch; sending second data packages comprising the batch digest and a respective proof of inclusion to the signers, the respective proof of inclusion proving that the payload of the respective signer is included in the batch; receiving third data packages from the signers, each third data package comprising the signer identifier, and a respective batch digest signature; verifying the batch digest signatures to determine whether or not the batch digests are correctly signed; aggregating correctly signed batch digest signatures to obtain an aggregated batch digest signature; and including the aggregated batch digest signature in the batch. The payload and batch digest signatures may be obtained by using different secret keys of the respective signer.

Anmelder

Firmen

ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
Ecole Polytechnique Fédérale de Lausanne (EPFL)

Land

🇨🇭 Schweiz

Fachgebiete