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. 30, 2018
Filed:
Jun. 28, 2016
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Peter Alan Robinson, Enoggera Reservoir, AU;
Eric Young, Annerley, AU;
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
A computerized device and a process protect against denial-of-service (DoS) attacks by using a memory-time hard problem that a client (e.g., IoT device or mobile app) solves as part of a request such as an initial registration process. The process may use parameters obtained from a public source of randomness. The problem is designed such that all memory allocated for the algorithm is used in a random manner, making it difficult for attackers to use FPGA/ASIC approaches. The client provides a proof-of-work (PoW) value to a server, which performs a more directed version of the calculation done by the client to confirm that the PoW value is correct. When confirmation is not obtained, the server can refrain from further processing of the client request, thwarting DoS attacks.