IP Library › Granted Patent US 12672176
Granted Patent B2
US 12672176 · App. 18/477,144 · Granted Jun 30, 2026

Pairing method and apparatus

Inventors: Jing Chen (Shanghai, CN); Yong Wang (Shenzhen, CN)
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
H04W76/10H04W12/041H04W12/069H04W12/50
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Quick Facts
Patent No.
US 12672176
App. No.
18/477,144
Filed
Sep 28, 2023
Granted
Jun 30, 2026
Kind
B2
Art Unit
2649
USPC
455/41.2
Abstract

Embodiments of this application provide a pairing method and apparatus, applied to the field of communications technologies and the field of connected vehicles. The method includes: A first node sends a first message, where the first message includes indication information of at least one pairing method supported by the first node; and receives a second message from a second node, where the second message includes indication information of a first pairing method, and the first pairing method is included in a pairing method supported by both the first node and the second node. According to embodiments of this application, the two nodes may support a plurality of pairing methods, so that the first pairing method is agreed on from the plurality of pairing methods, thereby improving node pairing flexibility.

Claims (43)

1 . A pairing method, comprising:

sending, by a first node, a first message, wherein the first message comprises indication information of at least one pairing method supported by the first node; and

receiving, by the first node, a second message from a second node, wherein the second message comprises indication information of a first pairing method, and the first pairing method is a pairing method supported by both the first node and the second node;

receiving, by the first node, a fourth message from the second node, wherein the fourth message comprises third authentication information, the third authentication information is obtained by the second node based on an inferring algorithm, a second shared key, and the at least one pairing method supported by the first node;

wherein the second shared key is obtained by the second node based on a first key agreement algorithm and a second key agreement parameter, the second key agreement parameter is generated by the first node based on the first key agreement algorithm;

generating, by the first node, fourth authentication information based on the inferring algorithm, a first shared key, and the at least one pairing method supported by the first node;

wherein the first shared key is obtained by the first node based on the first key agreement algorithm and a first key agreement parameter, the first key agreement parameter is generated by the second node based on the first key agreement algorithm;

determining, by the first node, that identity authentication on the second node succeeds by verifying that the third authentication information is consistent with fourth authentication information;

wherein the first key agreement algorithm is determined from a key agreement algorithm supported by both the first node and the second node.

2 . The method according to claim 1 , wherein the second message is for requesting to establish an association with the first node.

3 . The method according to claim 1 , wherein the first message further comprises priority information corresponding to the at least one pairing method supported by the first node, or a priority corresponding to the at least one pairing method is preconfigured.

4 . The method according to claim 3 , wherein the first pairing method is determined based on the priority information of the at least one pairing method supported by the first node.

5 . The method according to claim 1 , wherein the indication information of the at least one pairing method supported by the first node is an input/output capability of the first node.

6 . The method according to claim 1 , wherein the inferring algorithm is a key derivation algorithm.

7 . The method according to claim 1 , wherein the first key agreement algorithm a Diffie-Hellman key exchange (DH) algorithm, an elliptic curve cryptosystems-based DH (ECDH) algorithm, a Chinese cryptographic algorithm, or an Oakley algorithm.

8 . The method according to claim 1 , wherein the fourth message further comprises a second message integrity code (MIC), wherein the second MIC is a message integrity code generated based on an integrity protection algorithm, and the second MIC is for protecting integrity of the fourth message.

9 . A pairing method, comprising:

receiving, by a second node, a first message from a first node, wherein the first message comprises indication information of at least one pairing method supported by the first node;

determining, by the second node, a first pairing method, and the first pairing method is a pairing method supported by both the first node and the second node; and

sending, by the second node, a second message to the first node, wherein the second message comprises indication information of the first pairing method;

sending, by the second node, a fourth message to the first node, wherein the fourth message comprises third authentication information, the third authentication information is obtained by the second node based on an inferring algorithm, a second shared key, and the at least one pairing method supported by the first node;

wherein the second shared key is obtained by the second node based on a first key agreement algorithm and a second key agreement parameter, the second key agreement parameter is generated by the first node based on the first key agreement algorithm;

wherein the first key agreement algorithm is determined from a key agreement algorithm supported by both the first node and the second node.

10 . The method according to claim 9 , wherein the second message is for requesting to establish an association with the first node.

11 . The method according to claim 9 , wherein the first message further comprises priority information corresponding to the at least one pairing method supported by the first node, or a priority corresponding to the at least one pairing method is preconfigured.

12 . The method according to claim 11 , wherein the first pairing method is determined based on the priority information of the at least one pairing method supported by the first node.

13 . The method according to claim 9 , wherein the indication information of the at least one pairing method supported by the first node is an input/output capability of the first node.

14 . The method according to claim 9 , wherein the inferring algorithm is a key derivation algorithm.

15 . The method according to claim 9 , wherein the first key agreement algorithm a Diffie-Hellman key exchange (DH) algorithm, an elliptic curve cryptosystems-based DH (ECDH) algorithm, a Chinese cryptographic algorithm, or an Oakley algorithm.

16 . The method according to claim 9 , wherein the fourth message further comprises a second message integrity code (MIC), wherein the second MIC is a message integrity code generated based on an integrity protection algorithm, and the second MIC is for protecting integrity of the fourth message.

17 . An apparatus operating as part of a first node, comprising:

at least one processor; and

one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to:

send a first message, wherein the first message comprises indication information of at least one pairing method supported by the first node; and

receive a second message from a second node, wherein the second message comprises indication information of a first pairing method, and the first pairing method is a pairing method supported by both the first node and the second node;

receiving a fourth message from the second node, wherein the fourth message comprises third authentication information, the third authentication information is obtained by the second node based on an inferring algorithm, a second shared key, and the at least one pairing method supported by the first node;

wherein the second shared key is obtained by the second node based on a first key agreement algorithm and a second key agreement parameter, the second key agreement parameter is generated by the first node based on the first key agreement algorithm;

generating fourth authentication information based on the inferring algorithm, a first shared key, and the at least one pairing method supported by the first node;

wherein the first shared key is obtained by the first node based on the first key agreement algorithm and a first key agreement parameter, the first key agreement parameter is generated by the second node based on the first key agreement algorithm;

determining that identity authentication on the second node succeeds by verifying that the third authentication information is consistent with fourth authentication information;

wherein the first key agreement algorithm is determined from a key agreement algorithm supported by both the first node and the second node.

18 . The apparatus according to claim 17 , wherein the second message is for requesting to establish an association with the first node.

19 . The apparatus according to claim 17 , wherein the first message further comprises priority information corresponding to the at least one pairing method supported by the first node, or a priority corresponding to the at least one pairing method is preconfigured.