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1. (WO2018138006) GUARANTEEING AUTHENTICITY AND INTEGRITY IN SIGNALLING EXCHANGE BETWEEN MOBILE NETWORKS

Pub. No.:    WO/2018/138006    International Application No.:    PCT/EP2018/051304
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Sat Jan 20 00:59:59 CET 2018
IPC: H04L 9/06
H04L 9/32
H04W 8/00
Applicants: KONINKLIJKE KPN N.V.
Inventors: PRONK, Ewout, Leonard
Title: GUARANTEEING AUTHENTICITY AND INTEGRITY IN SIGNALLING EXCHANGE BETWEEN MOBILE NETWORKS
Abstract:
Embodiments of the present disclosure provide a solution that guarantees authenticity and integrity on the signaling exchange between mobile roaming networks that trust each other. According to at least one example embodiment, a network element located on a sending mobile network may be configured to generate a signaling message that includes one or more protected data fields, calculate a hash value for each of the one or more protected data fields, combine each of the calculated hash values together using an exclusive OR (XOR) operation resulting in a combined hash value. The network element may be further configured to calculate an authentication code based on the combined hash value and a key, add an authentication field to the signaling message, the authentication field storing the authentication code, and send the signaling message to a transporting network.