公开(公告)号：US20220158847A1

公开(公告)日：2022-05-19

申请号：US17523251

申请日：2021-11-10

Applicant: Nokia Technologies Oy

Inventor： Chaitanya AGGARWAL ,  Saurabh KHARE ,  Anja JERICHOW ,  Jani EKMAN

IPC: H04L9/32

Abstract: According to an example aspect of the present invention, there is provided an apparatus configured at least to determine whether a cryptographic signature of a token received in the apparatus from a network function consumer is valid, obtain a cryptographic signature of the apparatus of the token responsive to the cryptographic signature of the token being valid, and provide the token to a peer entity of the apparatus, wherein the cryptographic signature of the apparatus is either included into the token or provided in a header external to the token, wherein the peer entity is comprised in a second network, different from a first network where the apparatus is comprised in. The request may serve a user equipment, directly or indirectly.

公开(公告)号：US20210120409A1

公开(公告)日：2021-04-22

申请号：US17043971

申请日：2019-04-04

Applicant: Nokia Technologies Oy

Inventor： Suresh NAIR ,  Anja JERICHOW ,  Nagendra S BYKAMPADI

IPC: H04W12/06 ,  H04W12/40 ,  H04W12/04

Abstract: In given user equipment seeking access to a first communication network (e.g., 5G network), wherein the given user equipment comprises a subscriber identity module (e.g., USIM) configured for a second communication network, and wherein the second communication network is a legacy network with respect to the first communication network (e.g., legacy 4G network), a method includes: initiating an authentication procedure with at least one network entity of the first communication network and selecting an authentication method to be used during the authentication procedure; and participating in the authentication procedure with the at least one network entity using the selected authentication method and, upon successful authentication, the given user equipment obtaining a set of keys to enable the given user equipment to access the first communication network.

公开(公告)号：US20200021992A1

公开(公告)日：2020-01-16

申请号：US16581690

申请日：2019-09-24

Applicant: Nokia Technologies Oy

Inventor： Suresh NAIR ,  Anja JERICHOW ,  Nagendra S. BYKAMPADI

IPC: H04W12/10 ,  H04W4/14 ,  H04L9/14 ,  H04W60/00 ,  H04L29/06 ,  H04W12/04 ,  H04W8/02

Abstract: A short message service (SMS) message is encrypted using an encryption key stored at a user equipment and an access and mobility management function (AMF) and the encrypted SMS message is added to a payload of a non-access stratum (NAS) message that includes an NAS header. Integrity protection is applied to the NAS message using an integrity key stored at the user equipment and the AMF and the integrity-protected NAS message is transmitted. The NAS message is received via an NAS link between the user equipment and the AMF. An integrity check is performed on the NAS message using the integrity key. An encrypted short message service (SMS) message is extracted from a payload of the NAS message in response to the integrity check being successful and the encrypted SMS message is decrypted using the encryption key.