Verfahren und Vorrichtung zur Erzeugung eines Postquantensicheren Geteilten Geheimnisses mit Vorwärtssicherheit

Details

Veröffentlichungs-Nr.

EP4718770

Anmeldetag

16. September 2025

Veröffentlichung

1. April 2026

Rechtsraum

EP

IPC

H04L9/08, H04L9/32, H04L9/14

Abstract

A method and device for generating a shared session secret with forward secrecy between a first device and a second device. The first and second devices perform mutual authentication. The first and second devices establish a first shared secret using a key encapsulation mechanism with a long-term cryptographic key pair of the devices. The first and second devices generate an ephemeral cryptographic key pair comprising an ephemeral public key and an ephemeral private key, respectively, and transfer the ephemeral public key of the device to the other device using the first shared secret. The first and second devices then establish a second shared secret using the key encapsulation mechanism with the ephemeral public keys of the first device and the second device. The second shared secret is used as a temporary shared session secret.

Anmelder

Firma

INTEL Corporation

Land

🇺🇸 USA