The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 21, 2025
Filed:
Oct. 02, 2023
Hewlett Packard Enterprise Development Lp, Spring, TX (US);
Keith D. Underwood, Powell, TN (US);
Duncan Roweth, Bristol, GB;
Hewlett Packard Enterprise Development LP, Spring, TX (US);
Abstract
An apparatus facilitating efficient key refresh in a node is provided. During operation, the apparatus can determine a collective operation initiated by the node. The node can include a processor and can be in a distributed system comprising a plurality of nodes. The collective operation can be performed by a subset of the plurality of nodes in conjunction with each other. The apparatus can generate a new key based on a previous key maintained at the apparatus. Here, a respective key can be used for encrypting an inter-node packet in the distributed system. The apparatus can maintain the new and previous keys for the duration of the collective operation. Either of the new and previous keys can be used for decrypting messages received at the apparatus from other nodes of the distributed system. Upon determining a threshold point of the collective operation, the apparatus can discard the previous key.