KEY DISTRIBUTION FOR A PHYSICAL UNCLONABLE ENCRYPTION SYSTEM

    公开(公告)号:US20240007451A1

    公开(公告)日:2024-01-04

    申请号:US18039730

    申请日:2021-12-01

    Applicant: BASF SE

    Abstract: A method for distributing symmetric encryption keys in a communication system comprising a plurality of nodes is disclosed. Each node comprises information about printer control settings and printer jobs and a printing device configured for generating encryption keys. The method comprises: providing to each node an initial session key information that comprises an initial printer control setting and an initial printer job setting; providing to each node as a one-time pad an initial session key package encrypted with the initial session key information and comprising items of first session key information, wherein any two nodes have a common item of first session key information; generating at each node second session key information that is different for each of the other nodes; and sending from one of the nodes to another node a message encrypted with the first session key information and comprising the second session key information.

    QUANTUM-COMPUTING SECURE DIGITAL AND PHYSICAL PROOF OF WORK

    公开(公告)号:US20250106050A1

    公开(公告)日:2025-03-27

    申请号:US18833946

    申请日:2023-01-30

    Applicant: BASF SE

    Abstract: A computer-implemented method for proof-of-work for generating and validating a block of a blockchain using at least one printing device is disclosed. The printing device is configured for generating at least one digital image depending on a printer control setting. The method comprises the following steps: i) (110) determining a plurality of number strings by solving at least one cryptographic puzzle; ii) (118) selecting one of the number strings of the determined plurality of number strings as mining printer control setting; iii) (120) printing at least one initial digital image (116) comprising a plurality of colored pixels by using the printing device with the selected mining printer control setting (112) and scanning the printed image by using at least one scanning device, thereby generating a mining digital image (122) having a plurality of colored pixels different from the initial digital image (116); iv) (124) comparing the colored pixels of the mining digital image (122) and a task digital image (114) by using at least one processing device, wherein the task digital image (114) comprises a plurality of colored pixels being different from the initial digital image (116). The method comprises repeating steps ii) (118) to iv) (124) until the colored pixels of the mining digital image (122) and the task digital image (114) are found to be identical. In each case in step ii) (118) a different mining printer control setting (112) is selected. The mining printer control setting (112) for which the mining digital image (122) and the task digital image (114) are found to be identical, at least within tolerances, is used as the proof-of-work for generating and validating the block of the blockchain.

    CONTROLLING A SYNTHESIS PROCESS
    3.
    发明公开

    公开(公告)号:US20230305519A1

    公开(公告)日:2023-09-28

    申请号:US18018757

    申请日:2021-07-29

    Applicant: BASF SE

    CPC classification number: G05B19/4063 G05B19/41865 G16C20/10

    Abstract: A computer implemented method for controlling a synthesis process for a chemical or biological product, comprising the steps of at a processing device of a synthesis specification control module receiving via a communication interface a synthesis specification for the synthesis process, deriving a set of experimental requirements from the synthesis specification, receiving via the communication interface device laboratory equipment data associated with at least one laboratory equipment device deriving a set of equipment properties from the laboratory equipment data associated with at least one laboratory equipment device, comparing the set of experimental requirements with the set of equipment properties, generating control data based on the comparison providing with the processing device the control data suitable for controlling the synthesis process.

    PROOF OF WORK VIA PRINTING AND SCANNING RGB IMAGES DERIVED FROM HASH VALUES

    公开(公告)号:US20250023739A1

    公开(公告)日:2025-01-16

    申请号:US18712915

    申请日:2022-11-22

    Applicant: BASF SE

    Abstract: Computer implemented method for proof-of-work for generating and validating a block of a blockchain, also denoted as consensus mechanism, using at least one printing device, wherein the printing device is configured for generating at least one digital image depending on a printer control setting, the method comprises the following steps: i) (110) providing a cryptographic hash value; ii) (112) generating at least one initial digital image (114) comprising a plurality of colored pixels (116), wherein the initial digital image (114) is generated by converting at least one part of the cryptographic hash value into color values of the colored pixels (116); iii) (118) generating a task digital image (120) comprising a plurality of colored pixels (122) different from the initial digital image (114); iv) (124) selecting a mining printer control setting (126), printing the initial digital image (114) by using the printing device by mixing and/or blending pigments with the selected mining printer control setting and scanning the printed image by using at least one scanning device, thereby generating a mining digital image having a plurality of colored pixels different from the initial digital image (114); v) (128) comparing the colored pixels of the mining digital image and the task digital image (120) by using at least one processing device; wherein the method comprises repeating steps ii) to v) until the colored pixels of the mining digital image and the task digital image (120) are found to be identical, wherein in each case in step iv) (124) a different mining printer control setting (126) is selected, wherein the mining printer control setting (126) for which the mining digital image and the task digital image (120) are found to be identical at least within tolerances is used as the proof-of-work for generating and validating the block of the blockchain.

    ECOLOGICAL MINING USING AT LEAST ONE PRINTING DEVICE FOR PROOF-OF-WORK

    公开(公告)号:US20240305485A1

    公开(公告)日:2024-09-12

    申请号:US18281967

    申请日:2022-03-15

    Applicant: BASF SE

    CPC classification number: H04L9/50 G06K15/1805 G06K15/1878

    Abstract: A computer implemented method for proof-of-work for generating and validating a block of a blockchain using at least one printing device is proposed. The printing device is configured for generating at least one digital image depending on a printer control setting. The method comprises the following steps: i) (110) providing an initial digital image (112) comprising a plurality of colored pixels, wherein the initial digital image (110) is taken from an image database and/or is generated by printing and scanning the initial digital image by using an initial printer control setting; ii) (114) providing a task digital image (116) comprising a plurality of colored pixels different from the initial digital image (112); iii) (118) selecting a mining printer control setting (120), printing the initial digital image (112) by using the printing device by blending pigments with the selected mining printer control setting (120) and scanning the printed image by using at least one scanning device, thereby generating a mining digital image (122) having a plurality of colored pixels different from the initial digital image (112); iv) (124) comparing the colored pixels of the mining digital image (122) and the task digital image (116) by using at least one processing device; wherein the method comprises repeating steps ii) (114) to iv) (124) until the colored pixels of the mining digital image (122) and the task digital image (116) are found to be identical, wherein in each case in step iii) (118) a different mining printer control setting (120) is selected, wherein the mining printer control setting (120) for which the mining digital image (122) and the task digital image (116) are found to be identical is used as the proof-of-work for generating and validating the block of the blockchain.

    SIGNATURES AND LABELS IN A BLOCKCHAIN DERIVED FROM DIGITAL IMAGES

    公开(公告)号:US20240193394A1

    公开(公告)日:2024-06-13

    申请号:US18287310

    申请日:2022-04-19

    Applicant: BASF SE

    CPC classification number: G06K19/06037 G06F21/64 G09F3/0297

    Abstract: A computer implemented method for generating at least one security label (110) using at least one printing device (112) is proposed. The method comprises the following steps: i) (114) generating a first digital image (116) comprising a plurality of colored pixels by printing a printer job with a printer control setting and scanning the printout using the printing device (112) thereby generating a digital fingerprint: ii) (118) providing a binary code (120) of identifier information: iii) (122) mapping the identifier information with the digital fingerprint by determining a binary code of the digital fingerprint and adding the binary code (120) of the identifier information to the color code of the first digital image (116); iv) (124) generating a second digital image (126) having a plurality of colored pixels different from the first digital image (116) by transferring the added binary codes into a color code of the second digital image (126): v) (128) printing the second digital image (126) on a substrate (129) thereby generating the security label (110).

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