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:
Nov. 11, 2025
Filed:
Nov. 23, 2020
Nec Laboratories Europe Gmbh, Heidelberg, DE;
Sergey Fedorov, Heidelberg, DE;
NEC CORPORATION, Tokyo, JP;
Abstract
A rollback protection method for preventing message equivocation in a consensus system is provided. The consensus system includes distributed computational nodes connected by a network and configured to run a TEE-based consensus protocol. The method includes: executing, within a trusted execution environment of a node of distributed computational nodes, a trusted component instance, that includes volatile protected memory with protected data stored therein and a protected piece of code implementing at least a part of a consensus algorithm, generating identity data comprising a unique ephemeral identity, and storing the identity data in the volatile protected memory of the trusted component instance, and certifying a message of the consensus algorithm, wherein a certified consensus algorithm message is generated by cryptographically binding parts of the consensus algorithm message to the unique ephemeral identity of the trusted component instance and at least parts of the protected data of the trusted component instance.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile