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. 09, 2024
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 transmitter device being associated with a transmitter identifier. The transmitter device is configured to receive a transmitter partial private key from a trusted center, the transmitter device being configured to: send a request for two public session keys to the receiver device; receive from the receiver device a first ciphertext set, the first ciphertext set being derived from an encryption and authentication of two public session keys; decrypt and authenticate the two public session keys from the first ciphertext set using a receiver identifier and the transmitter partial private key; determine a second ciphertext set from the transmitter partial private key, from the receiver identifier, and from the two public session keys, the second ciphertext comprising an encrypted message; send the second ciphertext set to the receiver device.