Patent ID: 11895487
Assignee: ORANGE
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. An authentication server of a mobile communication network, said authentication server comprising:
at least one processor; and
at least one non-transitory computer-readable medium comprising instructions stored thereon which when executed by the at least one processor configure the user equipment to:
perform an authentication of a user equipment, a secret master key being generated, during said authentication, by the user equipment and the authentication server;
after the secret master key is generated by the user equipment and the authentication server, receive a key request that was sent by the user equipment with a view to communicating with an application server;
send a random variable to the user equipment after receiving the key request from the user equipment; and
compute a key to make a communication between the user equipment and the application server secure, said key being computed by using a key derivation function applied to at least the random variable, a user identifier and an identifier of the application server and using the master key.