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:
May. 26, 2020
Filed:
Jul. 04, 2018
Nec Laboratories Europe Gmbh, Heidelberg, DE;
Ghassan Karame, Heidelberg, DE;
Wenting Li, Heidelberg, DE;
Jian Liu, Helsinki, FI;
Nadarajah Asokan, Espoo, FI;
Andrew Paverd, Espoo, FI;
NEC CORPORATION, Tokyo, JP;
Abstract
A method for byzantine fault-tolerant replication of data on a plurality of n servers includes performing, by a primary node (PN), a prepare procedure that includes computing a prepare message including a unique identifier and multicasting the prepare message to the REPN. The method further includes performing, by the PN, a commit procedure that includes receiving, from each of a portion of the REPN, a prepare message reply signature part and aggregating each of the prepare message reply signature parts to generate a prepare message reply aggregated signature, checking the validity of the prepare message reply aggregated signature, and upon determining that the prepare message reply aggregated signature is valid, computing a commit message including the prepare message reply aggregated signature and multicasting the commit message to the REPN. The method further includes transmitting, to the client, the commit message reply aggregated signature.