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. 22, 2024
Filed:
Mar. 02, 2020
Nec Laboratories Europe Gmbh, Heidelberg, DE;
Sebastien Andreina, Heidelberg, DE;
Ghassan Karame, Heidelberg, DE;
NEC CORPORATION, Tokyo, JP;
Abstract
A method for supporting sharing of travel history of travelers in airports includes receiving, by a trusted entity of the distributed ledger system, a registration request from a traveler via a traveler application. The registration request provides personal information of the traveler to the trusted entity. The method further includes generating, by the trusted entity, a public key for the traveler using an identity-based encryption mechanism and sending, from the trusted entity to the global identity blockchain, a registration transaction with respect to the traveler. The registration transaction comprises the public key of the traveler. The method further includes recording a travel history that includes all travel tickets of the traveler, wherein a Merkle tree of all the travel tickets of the traveler is generated. The Merkle tree has a Merkle root, and the Merkle root of the Merkle tree is stored in the global identity blockchain.