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1. (WO2018177662) HASH VALUES FOR THE BIDIRECCTIONALLY LINKED BLOCKCHAIN

Pub. No.:    WO/2018/177662    International Application No.:    PCT/EP2018/054557
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Sat Feb 24 00:59:59 CET 2018
IPC: G06F 21/64
H04L 9/32
Applicants: BUNDESDRUCKEREI GMBH
Inventors: WILKE, Andreas
FABIAN, David
KOMAROV, Ilya
PAESCHKE, Manfred
Title: HASH VALUES FOR THE BIDIRECCTIONALLY LINKED BLOCKCHAIN
Abstract:
The invention relates to a method for the tamper-proof storing of data (310, 248) in an electronic memory (306). The method comprises: generating an additional block (112) for expanding a block chain structure (100, 312), which additional block comprises the data (310, 248) to be stored and is provided to be linked bidirectionally with the last block (110) of the blockchain structure (100, 312), calculating a first test value (224) of the last block (110) for the bidirectional linking of the additional block (112) with the last block (110) of the blockchain structure (100, 312), calculating a test value (224, 242) of the additional block (112) for the bidirectional linking of the additional block (112) with the last block (110) of the blockchain structure (100, 312), adding the first test value (224) of the last block to the last block (110), adding the test value (224, 242) of the last block to the additional block (112).