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:
Jan. 21, 2025
Filed:
Dec. 06, 2019
Secure-ic Sas, Cesson-Sevigne, FR;
SECURE-IC SAS, Cesson-Sevigne, FR;
Abstract
A transmitter device for sending an encrypted message to a receiver device in an identity-based cryptosystem, the identity-based cryptosystem includes a transmitter trusted center connected to the transmitter device and a receiver trusted center connected to the receiver device. The transmitter device is configured to: receive, from the transmitter trusted center, two public authentication keys; check if a set of conditions related to a transmitter trusted center public key, to a receiver trusted center public key, and to a transmitter authentication key comprised in the two public authentication keys are satisfied; determine a ciphertext set comprising an encrypted message if the set of conditions are satisfied; send the ciphertext set to the receiver device.