Patent ID: 11888982
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. The method of claim 2, wherein the method further comprises:
sending, by the first network device, a second rekey request to the second network device for rekeying an SA when there is a change in the cryptographic suite associated with the first network device, wherein the second rekey request carries a first SPI and carries the cryptographic suite associated with the first network device;
receiving, by the first network device, a second rekey response which carries a no proposal chosen notification to indicate that there is no matching cryptographic suite present in the cryptographic suite associated with the first network device carried in the second rekey request;
renegotiating, by the first network device, with the second network device until a negotiated cryptographic suite is obtained; and
the rekeying the SA by the first network device, the SA is further performed according to the negotiated cryptographic suite.