Bundesdruckerei Gmbh

Technische Unversität Berlin

Ilya Komarov

Manfred Paeschke

Detlef Starick

Jörg Fischer

Olga Kulikovska

Markus Tietke

Andreas Wilke

Olaf Dressel

David Fabian

Frank Fritze

Peter Palm

Walter Fumy

Peter Janacik

Lazar Kulikovsky

Steffen Kunaht

Michael Windisch

Sandra Schmidt

Andre Joseph

Michael Backhaus

Rebekka Siegmann

A method for storing data in a tamper-proof manner in a data block structure. The method includes, for a group of data blocks, determining functions, which are assigned to the data blocks of the group and dependent on the data stored in the corresponding data block; creating a combination of all functions assigned to the data blocks of the group; and determining a combination-dependent coefficient for each function of the combination, so that the combination meets a predefined condition; and for each data block of the group, determining a control group of data blocks of the group assigned to the corresponding data block; and storing the coefficient that was determined for the function of the corresponding data block in all data blocks of the control group.

Datacule structure and method for storing data in a tamper-proof manner

A method for obtaining a blockchain structure includes providing a first data block and a second data block, wherein a first data processing rule is assigned to first data of the first data block, and a second data processing rule is assigned to second data of the second data block. The first data processing rule is linked to the second data processing rule to obtain a third data processing rule, wherein the first data processing rule is executed before the second data processing rule when the third data processing rule is executed. The second data processing rule is linked to the first data processing rule to obtain a fourth data processing rule. When the fourth data processing rule is executed, the first data processing rule is executed after the second data processing rule. The third data processing rule is stored in the second data block and the fourth data processing rule is stored in the first data block to obtain the blockchain structure.

Method for linking a first data block to a second data block, method for checking the integrity of a blockchain structure, device and computer program product

The method includes creating and sending a change request for a change to the system configuration of the hardware system by means of a first hardware component of the plurality of hardware components, receiving the change request by means of the further hardware components of the plurality of hardware components, checking the change request by means of the further hardware components for compatibility of the change request with the configuration of the particular receiving hardware component by using configuration data of the receiving hardware component, in the case that the requested change to the system configuration is compatible with the configuration of the receiving hardware component, generating and sending an approval of the change to the system configuration by means of the receiving hardware component, and in the case that an approval quorum of the hardware components that is necessary for consent is achieved, entering the requested change to the system configuration of the hardware system into the block chain, implementing the requested change to the system configuration in the hardware system.

System configuration control of a hardware system

The invention relates to a method for the tamper-proof storage of data in an electronic store using a bidirectionally linked blockchain structure. The method comprises the steps of:

Bidirectionally linked extended blockchain structure

In one embodiment the method includes providing a bidirectionally linked blockchain structure; generating an additional block for expanding the blockchain structure, which includes the data to be stored and is intended to be linked bidirectionally to the last block of the blockchain structure, the last block of the blockchain structure including stored data; and calculating a first block-dependent linking function for bidirectionally linking the last block to the additional block. The calculation of the linking function including calculating a combined block-dependent check value of the last block and of the additional block, using the data stored in the last block and the data to be stored in the additional block; and associating the combined check value with a block-independent, linking process-specific function. The method further includes adding the first block-dependent linking function to the last block and to the additional block.

Bidirectionally linked blockchain structure

The invention relates to a method for the tamper-proof storing of data in a bidirectionally linked blockchain structure. The method comprises the steps of creating an additional block Bto extend the blockchain structure which comprises the data to be stored as payload data creating a bidirectional linking of the additional block Bto a predefined number of preceding blocks, wherein creating the bidirectional linking comprises performing a backward linking of the additional block to the predefined number of preceding blocks and performing a forward linking of the predefined number of preceding blocks to the additional block.

The method includes generating an additional block for expanding a blockchain structure, which includes the data to be stored and is intended to be linked bidirectionally to the last block of the blockchain structure; calculating a first check value of the last block for bidirectionally linking the additional block to the last block of the blockchain structure; calculating a check value of the additional block for bidirectionally linking the additional block to the last block of the blockchain structure; adding the first check value of the last block to the last block and; adding the check value of the additional block to the additional block.

Hash values for a bidirectionally linked blockchain

An apparatus for document identification, having a capture device for capturing a document feature of a document, a processor that is designed to perform document identification locally using the document feature if a processing criterion for the local performance of document identification by means of the apparatus for document identification is satisfied, and a transmitter that is designed to send a data record that is dependent on the document feature via a communication network to a communication network address if the processing criterion for the local performance of document identification by means of the apparatus for document identification is not satisfied.

Growing community of inventors

Berlin, Germany

Ilya Komarov