Method and apparatus for registering shared key

Patent metadata

Field	Value
Publication number	US-11949779-B2
Application number	US-201917423259-A
Country	US
Kind code	B2
Filing date	Oct 31, 2019
Priority date	Jan 17, 2019
Publication date	Apr 2, 2024
Grant date	Apr 2, 2024

Abstract

Provided is a method and apparatus for registering a shared key. A method of registering, by a second electronic device, a shared digital key in a target device includes receiving a digital key sharing attestation and a key tracking server (KTS) signature corresponding to the digital key sharing attestation, receiving an authentication request from the target device, and transmitting an authentication response including the digital key sharing attestation and the KTS signature to the target device in response to the authentication request.

First claim

The invention claimed is:

1. An operating method of a second electronic device, the method comprising:
receiving a digital key sharing attestation from a first electronic device, wherein the digital key sharing attestation is created by the first electronic device based on a digital key certificate received from the second electronic device and includes a signature of the first electronic device;
transmitting the digital key sharing attestation to a server; and
receiving an immobilizer token corresponding to the digital key sharing attestation from the server.

2. The method of claim 1 , wherein the server includes a server operated by a manufacturer of a target device.

3. The method of claim 1 , wherein the receiving of the immobilizer token comprises receiving the immobilizer token from the server through a second electronic device backend server.

4. A second electronic device comprising:
a communicator;
at least one memory storing an operating program of the second electronic device; and
at least one processor configured to execute the operating program to control the communicator to:
receive a digital key sharing attestation from a first electronic device, wherein the digital key sharing attestation is created by the first electronic device based on a digital key certificate received from the second electronic device and includes a signature of the first electronic device,
transmit the digital key sharing attestation to a server, and
receive an immobilizer token corresponding to the digital key sharing attestation from the server.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lim Taehyung
• Shin Inyoung
• LEE Jonghyo
• Jung Sooyeon

Classifications

• H04L9/085 Primary

  Secret sharing or secret splitting, e.g. threshold schemes · CPC title

• H04L9/3268 Primary

  using certificate validation, registration, distribution or revocation, e.g. certificate revocation list [CRL] · CPC title

• H04L9/0838 Primary

  Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these (network architectures or network communication protocols for key exchange in a packet data network H04L63/061) · CPC title

• H04L9/3213

  using tickets or tokens, e.g. Kerberos (network architectures or network communication protocols for entities authentication using tickets in a packet data network H04L63/0807) · CPC title

• H04L2209/805

  Lightweight hardware, e.g. radio-frequency identification [RFID] or sensor · CPC title