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:
Mar. 18, 2025
Filed:
Mar. 25, 2022
Sophos Limited, Abingdon, GB;
Amit Katyal, Bangalore, IN;
Venkata Suresh Reddy Obulareddy, Bangalore, IN;
Sophos Limited, Abingdon, GB;
Abstract
A Transport Layer Security (TLS) handshake can be terminated early—i.e., before certificate validation—to reduce server-side demand, which can be particularly advantageous in counteracting Denial-of-Service (DOS) attacks and the like. To this end, an endpoint may provide a one-time password (OTP) in the client hello message during the initial steps of a TLS handshake or similar connection protocol. A gateway, upon receiving the client hello message, may generate its own OTP for comparison with the OTP in the client hello message. The endpoint and gateway may advantageously generate the OTP based on a secret provided by a threat management facility with a preexisting secure connection to the two entities. If the OTP provided in the client hello message and the OTP generated on the gateway are the same, then the TLS handshake may continue; otherwise, the Transmission Control Protocol (TCP) connection will be terminated by the gateway.