Method and devices for secure communications in a telecommunications network

US8683194B2 · kind B2 · utility

Assignee

• ORANGE · FR

Inventors

• Patrick Battistello · Lannion, FR
• Henri Gilbert · Les Ulis, FR

Key dates

• Filing date: Sep 28, 2010
• Grant date: Mar 25, 2014
• Expiry date: Oct 5, 2030

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L63/0823
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A secure communications method is provided for use in a telecommunications network, wherein a transaction between an entity A and an entity B of the network comprises: entity A sending an authorization request to an Authorization Server S, in which request the entity A identifies itself and authenticates itself; the entity A declares to the Authorization Server its intention to communicate with a certain entity B; the Authorization Server determines a secret key that it shares with the entity B; the Authorization Server generates a session key and sends it to the entity A; the session key being a one-way function of the secret key and also being a function of an integer (transaction number) allocated to the transaction; the Authorization Server also generates a transaction identifier that is a function depending at least on the transaction number in non-invertible manner.