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:
Dec. 16, 2025
Filed:
Dec. 18, 2023
Akamai Technologies, Inc., Cambridge, MA (US);
Charles E. Gero, Quincy, MA (US);
Vishal A. Patel, Billerica, MA (US);
David Tang, Cambridge, MA (US);
Akamai Technologies, Inc., Cambridge, MA (US);
Abstract
Methods for implementing Proof of Work (PoW) as an authorization signal are provided in a multi-node distributed operating environment wherein a set of authorization proxies are used to control access to protected resources. Each authorization proxy is enabled to provide PoW challenges to requesting clients. The methods enforce the constraint that PoW can only be exchange for access once. The approach thus prevents replays of PoW, e.g., wherein a client could do the work and then use that PoW for access multiple times, or a nefarious user could steal the PoW from another client to gain access to the protected resource.