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1. (WO2018177664) IDENTIFIERS FOR INTEGRITY PROTECTION OF DIGITALLY CODED COPIES

Pub. No.:    WO/2018/177664    International Application No.:    PCT/EP2018/054559
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
Applicants: BUNDESDRUCKEREI GMBH
Inventors: KOMAROV, Ilya
PAESCHKE, Manfred
Title: IDENTIFIERS FOR INTEGRITY PROTECTION OF DIGITALLY CODED COPIES
Abstract:
The invention relates to a method for the integrity protection of digitally coded copies (110, 120, 130, 314) using a block chain structure (111, 121, 131, 200, 201, 229, 312, 316) for logging the derived history of the copies (110, 120, 130, 314). The method comprises: calling up a digitally coded copy template (110, 120, 130, 310); generating a digitally coded copy (110, 120, 130, 314) of data (102) of the copy template (110, 120, 130, 310); providing the copy (110, 120, 130, 314) under an address (115, 125, 135, 317) for calling up the copy (110, 120, 130, 314); creating an identifier (114, 124, 134, 315) of the copy (110, 120, 130, 314), wherein the identifier (114, 124, 134, 315) of the copy (110, 120, 130, 314) comprises the address (115, 125, 135, 317) of the copy (110, 120, 130, 314), and a block chain structure (111, 121, 131, 200, 201, 229, 312, 316) of the copy template (110, 120, 130, 310) as a parameter value, wherein an additional block (116, 128, 136, 202) is added to the block chain structure (111, 121, 131, 200, 201, 229, 312, 316), wherein the additional block (116, 128, 136, 202) comprises the address (115, 125, 135, 313) of the copy template (110, 120, 130, 310) and a test feature (PM) of the copied data (102); providing the identifier (114, 124, 134, 315) of the copy (110, 120, 130, 314) for calling up the copy (110, 120, 130, 314).