公开(公告)号：US20220167157A1

公开(公告)日：2022-05-26

申请号：US17601139

申请日：2020-03-12

Applicant: NEC Corporation

Inventor： Kundan TIWARI ,  Toshiyuki TAMURA ,  Sander DE KIEVIT

IPC: H04W12/041 ,  H04W12/06

Abstract: A method in a user equipment (UE), the method comprising: storing security keys, wherein each of the security keys corresponds to a RAT (Radio Access Technology); receiving from a communications apparatus, a message including information of a first RAT which the UE communicates with; and determining a first security key in the security keys based on the information of the first RAT, the first security key being used to verify integrity of the message.

公开(公告)号：US20240196205A1

公开(公告)日：2024-06-13

申请号：US18411225

申请日：2024-01-12

Applicant: NEC Corporation

Inventor： Sheeba Backia Mary BASKARAN ,  Sander DE KIEVIT ,  Sivabalan ARUMUGAM ,  Anand Raghawa PRASAD

IPC: H04W12/02 ,  H04W8/04 ,  H04W8/18 ,  H04W12/06 ,  H04W12/72 ,  H04W60/00

CPC classification number: H04W12/02 ,  H04W8/04 ,  H04W8/18 ,  H04W12/06 ,  H04W12/72 ,  H04W60/00

Abstract: The present disclosure provides a User Equipment (UE) comprising a transceiver circuit; and a controller configured to control the transceiver circuit to send, to an Access and mobility Management Function (AMF) of a communication node, an identifier, wherein upon successful authentication of a network access function of the UE in the communication node, the controller is configured to maintain a secure connection with the communication node.

公开(公告)号：US20220417010A1

公开(公告)日：2022-12-29

申请号：US17421363

申请日：2019-12-19

Applicant: NEC Corporation

Inventor： Sander DE KIEVIT ,  Sheeba Backia BASKARAN ,  Anand Raghawa PRASAD

IPC: H04L9/08 ,  H04L9/32

Abstract: The present disclosure relates to method of enabling key re-usage for an electronic device. The method comprising: receiving a request message from the electronic device, wherein the request message comprises a first information being indicative of a preference for one of a first key associated with a first network node in a first network or a second key associated with a second network node in a second network; processing the request message to determine the preference indicated in the first information; and transmitting a response message to the electronic device for reusing the first key or second key, the electronic device is configured to derive a third key based on the first key or the second key as indicated in the determined preference, and the second network is able to access to the first key and the second key whereas the first network cannot access the second key.

公开(公告)号：US20220191696A1

公开(公告)日：2022-06-16

申请号：US17605038

申请日：2019-04-30

Applicant: NEC Corporation

Inventor： Takahito YOSHIZAWA ,  Shubhranshu SINGH ,  Sander DE KIEVIT

IPC: H04W12/069 ,  H04W12/72 ,  H04L9/32

Abstract: Provided is a user equipment (UE) including a first Subscriber Identity Module (SIM) and a second SIM, the UE is configured to receive, from a network node, a first token derived from a seed token using a first cryptographic key associated with the first SIM; derive a first third order token by encrypting the received first token using a second cryptographic key associated with the second SIM; and send the third order token to the network node.

公开(公告)号：US20220132316A1

公开(公告)日：2022-04-28

申请号：US17427784

申请日：2020-02-07

Applicant: NEC Corporation

Inventor： Sander DE KIEVIT ,  Takahite YOSHIZAWA

IPC: H04W12/106 ,  H04W76/15 ,  H04W12/033 ,  H04W12/0471 ,  H04W12/041

Abstract: This disclosure introduces methods and mechanisms of integrity protection in 4G and 5G system, especially in the context of Dual Connectivity (DC) involving both 4G and 5G base stations.

公开(公告)号：US20210409942A1

公开(公告)日：2021-12-30

申请号：US17288995

申请日：2019-11-06

Applicant: NEC Corporation

Inventor： Sander DE KIEVIT ,  Anand Raghawa PRASAD ,  Sheeba Bacia Mary BASKARAN

IPC: H04W12/06 ,  H04W8/18 ,  H04W12/72

Abstract: An apparatus is provided. The apparatus includes a memory storing one or more instructions and a processor. The processor execute the one or more instructions to: receive update information from an external apparatus, the update information corresponding to a network communication; obtain a Subscription Concealed Identifier (SUCI) based on the update information; and transmit the SUCI to the external apparatus.

公开(公告)号：US20240259803A1

公开(公告)日：2024-08-01

申请号：US18631247

申请日：2024-04-10

Applicant: NEC Corporation

Inventor： Sander DE KIEVIT ,  Anand Raghawa PRASAD ,  Sheeba Backia Mary BASKARAN

IPC: H04W12/06 ,  H04W8/18 ,  H04W12/72

CPC classification number: H04W12/06 ,  H04W8/18 ,  H04W12/72

Abstract: An apparatus is provided. The apparatus includes a memory storing one or more instructions and a processor. The processor execute the one or more instructions to: receive update information from an external apparatus, the update information corresponding to a network communication; obtain a Subscription Concealed Identifier (SUCI) based on the update information; and transmit the SUCI to the external apparatus.

公开(公告)号：US20220141661A1

公开(公告)日：2022-05-05

申请号：US17434505

申请日：2020-02-28

Applicant: NEC Corporation

Inventor： Sander DE KIEVIT ,  Kundan TIWARI

IPC: H04W12/069 ,  H04W12/041

Abstract: The present disclosure provides a terminal including a memory; and a processor, comprising hardware, configured to perform a primary authentication between the terminal and a network in 5G for a third party service, derive a security key, KAUSF, and derive an identifier for the security key from the security key.

公开(公告)号：US20210409939A1

公开(公告)日：2021-12-30

申请号：US17288968

申请日：2019-10-30

Applicant: NEC Corporation

Inventor： Sheeba Backia Mary BASKARAN ,  Sivabalan ARUMUGAM ,  Anand Raghawa PRASAD ,  Sander DE KIEVIT ,  Takahito YOSHIZAWA ,  Hironori ITO

IPC: H04W12/041 ,  H04W12/0431 ,  H04W12/06 ,  H04W60/04

Abstract: A method for providing a key derivation function (KDF) negotiation in a 5G network is provided. The method which includes: selecting a specific KDF at a UE and at the network for at least one security related key derivation; and transmitting, said selected KDF to the UE and to other network functions to indicate said selected KDF for generating specific security key at a receiver side.

公开(公告)号：US20220104009A1

公开(公告)日：2022-03-31

申请号：US17422035

申请日：2020-01-10

Applicant: NEC Corporation

Inventor： Sheeba Backia Mary BASKARAN ,  Sander DE KIEVIT ,  Sivabaian ARUMUGAM ,  Anand Raghawa PRASAD

IPC: H04W12/02 ,  H04W8/18 ,  H04W8/04 ,  H04W60/00 ,  H04W12/72 ,  H04W12/06

Abstract: The present disclosure provides a User Equipment (UE) comprising a transceiver circuit; and a controller configured to control the transceiver circuit to send, to an Access and mobility Management Function (AMF) of a communication node, an identifier, wherein upon successful authentication of a network access function of the UE in the communication node, the controller is configured to maintain a secure connection with the communication node.