Granted Patent B2

US 12,439,249 · App. 17/598,439 · Granted Oct 7, 2025

Inventor: Jianxin Ma (Shanghai, CN)

Assignee: Telefonaktiebolaget LM Ericsson (Publ)

H04W12/06

Abstract

Claims (31)

1. A method for operating a wireless device that is operable to connect to a network, the method, performed by the wireless device, comprising:

initiating an authentication procedure toward the network by:

generating a random value;

generating a sequence number;

assembling an authentication token from at least the generated sequence number;

sending a message to an entity of the network requesting service over the network, the message including the generated random value and the authentication token;

receiving a message from the network entity, the message comprising an authentication parameter;

calculating an authentication parameter by:

inputting at least the random value and key material shared with the wireless device to an authentication function, the key material comprising a long term secret key; and

calculating a derivative of a result of the authentication function; and

comparing the received authentication parameter with the calculated authentication parameter.

2. The method as claimed in claim 1 , further comprising, if the received and calculated authentication parameters are the same:

sending a message to the network entity indicating that authentication is successful.

3. The method as claimed in claim 1 , further comprising, if the received and calculated authentication parameters are not the same:

sending a message to the network entity indicating that authentication is not successful.

4. The method as claimed in claim 1 , wherein assembling an authentication token from at least the generated sequence number comprises:

calculating a Message Authentication Code on the basis of at least the generated sequence number and the generated random value; and

concatenating at least the sequence number and the calculated Message Authentication Code to form the authentication token.

5. The method as claimed in claim 1 , wherein generating a random value comprises generating the random value according to a process employed for generating a random value in at least one entity in the network.

6. The method as claimed in claim 1 , wherein generating a sequence number comprises generating the sequence number according to a process employed for generating a sequence number in at least one entity in the network.

7. A wireless device that is operable to connect to a network, the wireless device comprising a processor and a memory, the memory containing instructions executable by the processor such that the wireless device is configured to:

initiate an authentication procedure toward the network by:

generating a random value;

generating a sequence number;

assembling an authentication token from at least the generated sequence number;

sending a message to an entity of the network requesting service over the network, the message including the generated random value and the authentication token;

receiving a message from the network entity, the message comprising an authentication parameter;

calculating an authentication parameter by:

inputting at least the random value and key material shared with the wireless device to an authentication function, the key material comprising a long term secret key; and

calculating a derivative of a result of the authentication function; and

comparing the received authentication parameter with the calculated authentication parameter.

Assignments (1)

Continuity (1)

References Cited (31)