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:
Sep. 22, 2020
Filed:
Nov. 12, 2018
Cloudflare, Inc., San Francisco, CA (US);
Sébastien Andreas Henry Pahl, San Francisco, CA (US);
Matthieu Philippe François Tourne, San Francisco, CA (US);
Piotr Sikora, San Francisco, CA (US);
Ray Raymond Bejjani, San Francisco, CA (US);
Dane Orion Knecht, San Francisco, CA (US);
Matthew Browning Prince, San Francisco, CA (US);
John Graham-Cumming, London, GB;
Lee Hahn Holloway, Santa Cruz, CA (US);
Albertus Strasheim, San Francisco, CA (US);
CLOUDFLARE, INC., San Francisco, CA (US);
Abstract
A server establishes a secure session with a client device where a private key used in the handshake when establishing the secure session is stored in a different server. During the handshake procedure, the server receives a premaster secret that has been encrypted using a public key bound with a domain for which the client device is attempting to establish a secure session with. The server transmits the encrypted premaster secret to another server for decryption. The server receives the decrypted premaster secret and continues with the handshake procedure including generating a master secret from the decrypted premaster secret and generating one or more session keys that are used in the secure session for encrypting and decrypting communication between the client device and the server.