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    PROOF OF WORK VIA PRINTING AND SCANNING RGB IMAGES DERIVED FROM HASH VALUES
    31.
    发明公开
    PROOF OF WORK VIA PRINTING AND SCANNING RGB IMAGES DERIVED FROM HASH VALUES 审中-公开

    公开(公告)号：EP4187841A1

    公开(公告)日：2023-05-31

    申请号：EP21210670.2

    申请日：2021-11-26

    Applicant: BASF SE

    Inventor： SEIDEMANN, Lothar ,  JELICH, Holger Kai Peer

    IPC: H04L9/32 ,  H04L9/38

    Abstract: Computer implemented method for proof-of-work for generating and validating a block of a blockchain 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.

    NEW METHOD FOR PSEUDO-RANDOM NUMBER GENERATION FOR INFORMATION ENCRYPTION
    34.
    发明公开
    NEW METHOD FOR PSEUDO-RANDOM NUMBER GENERATION FOR INFORMATION ENCRYPTION 审中-公开

    公开(公告)号：EP3761556A1

    公开(公告)日：2021-01-06

    申请号：EP19184445.5

    申请日：2019-07-04

    Applicant: BASF SE

    Inventor： SEIDEMANN, Lothar ,  PETERSEN, Holgen ,  FRIEHMELT, Rainer ,  PIKHARD, Oliver

    IPC: H04L9/08 ,  H04L9/00

    Abstract: A method of generating at least one encryption key (130) for encrypting data (142), a method of data transmission between at least two communication systems (136, 138), a method of encrypting data (142) and a method of decrypting encrypted data (144) are disclosed. Further disclosed are an encryption key generating device (110), a system (134), a data encryption system (148) and a data decryption system (150). The method of generating at least one encryption key (130) for encrypting data (142), specifically for data transmission over an insecure channel, comprises:
    i. blending at least two materials (114) according to at least one item of blending in-formation by using a blending device (112), thereby generating at least one blend (120);
    ii. detecting at least one material property (124) of the blend (120) by using at least one detector (126); and
    iii. transforming the material property (124) into the encryption key (130) by using at least one data processing device (132) configured for applying at least one trans-formation algorithm to the material property (124).

    VERFAHREN ZUR HERSTELLUNG VON CHLOR AUS HCI
    37.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON CHLOR AUS HCI 有权
    用于生产氯FROM HCI

    公开(公告)号：EP2445831A1

    公开(公告)日：2012-05-02

    申请号：EP10725697.6

    申请日：2010-06-17

    Applicant: BASF SE

    Inventor： KARCHES, Martin ,  BACHMANN, Kati ,  SESING, Martin ,  SEIDEMANN, Lothar ,  JACOBSEN, Knud

    IPC: C01B7/04

    CPC classification number: C01B7/04

    Abstract: The invention relates to a method for producing chlorine by the oxidation of hydrogen chloride with oxygen in a fluidized bed reactor in the presence of a particulate catalyst, the reaction heat produced by the exothermic hydrogen chloride oxidation being carried away by water which circulates in the tubes of a shell-and-tube heat exchanger. The method comprises the following steps: (i) heating the fluidized bed reactor to an operating temperature in the range of 350 to 420°C in a heating phase and (ii) reacting the hydrogen chloride with oxygen at the operating temperature in an operating phase. The method is characterized in that (i-1) the fluidized bed reactor is heated to a temperature below the operating temperature in a first heating phase, and (i-2) hydrogen chloride and oxygen are fed to the fluidized bed reactor and reacted in a second heating phase, the fluidized bed reactor being heated to the operating temperature by the reaction heat produced by the exothermic hydrogen chloride oxidation.

    VERFAHREN ZUR HERSTELLUNG VON CHLOR
    38.
    发明授权
    VERFAHREN ZUR HERSTELLUNG VON CHLOR 有权
    用于生产氯

    公开(公告)号：EP1866239B1

    公开(公告)日：2012-01-18

    申请号：EP06743192.4

    申请日：2006-02-20

    Applicant: BASF SE

    Inventor： SESING, Martin ,  DIEFENBACHER, Armin ,  VOSS, Hartwig ,  SCHUBERT, Olga ,  SEIDEMANN, Lothar ,  KARCHES, Martin ,  GRASSLER, Thomas ,  STROEFER, Eckhard

    IPC: C01B7/04

    CPC classification number: C01B7/075 ,  C01B7/04 ,  C01B7/0743

    Abstract: The invention concerns a method for producing chlorine and a hydrochloric gas including the following steps: a) supplying via a stream containing hydrochloric gas (a1) and a stream containing oxygen (a2) an oxidation zone and a hydrochloric gas catalytic oxidation with chlorine, a stream of gaseous product (a3) containing chlorine, water, oxygen, carbon dioxide, and the inert gases obtained; b) cooling the stream of gaseous products (a3) and separating the water from the hydrochloric gas in the form of hydrochloric acid, a gas stream (b) containing chlorine, water, oxygen, carbon dioxide, and the inert gases still remaining; c) optionally drying the gas stream (b), and obtaining a gas stream (c) substantially water-free, containing chlorine, oxygen, carbon dioxide and inert gases; d) liquefying at least partly the gas stream (c) and a return stream (f1) rich in chlorine, containing chlorine, oxygen, carbon dioxide through thickening and cooling, a partly liquefied stream (d) being preserved; e) gas-liquid separation of the stream (d) into a gas stream (e1) containing chlorine, oxygen, carbon dioxide, and inert gases and into a liquid stream (e2) containing chlorine, oxygen, and carbon dioxide; f) introducing at least part of the gas stream (e1) into a unit with membrane and separating a return stream (f1) rich in chlorine and a gas flow (f2) poor in chlorine, containing chlorine, oxygen, carbon dioxide, via a separation by the membrane and reintroducing the return flux (f1) rich in chlorine in step d); g) separating the liquid stream (e2) by distillation into a stream of chlorine (g1) and a stream (g2) comprising substantially oxygen and carbon dioxide.

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