Method of verifying integrity of data stored on processing facility used for processing sheet-like articles such as bank notes or bills
PCT No. PCT/EP96/01178 Sec. 371 Date Feb. 13, 1997 Sec. 102(e) Date Feb. 13, 1997 PCT Filed Mar. 19, 1996 PCT Pub. No. WO96/29683 PCT Pub. Date Sep. 26, 1996For testing the intactness of stored data, intact data corresponding to the data to be tested from a component of the processing facility in a...
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| creator | WILHELM BUNTSCHECK BODO ALBERT |
| description | PCT No. PCT/EP96/01178 Sec. 371 Date Feb. 13, 1997 Sec. 102(e) Date Feb. 13, 1997 PCT Filed Mar. 19, 1996 PCT Pub. No. WO96/29683 PCT Pub. Date Sep. 26, 1996For testing the intactness of stored data, intact data corresponding to the data to be tested from a component of the processing facility in a certain operating state of the processing facility in the intact state are first stored in a test device. To check the intactness of the data to be tested in a component a key is produced in the test device for each test, said key being different from those of prior tests. Using this key and a cryptographic algorithm one prepares two cryptograms. One cryptogram is prepared from the data to be tested by the component of the processing facility in which the data to be tested are stored. The other cryptogram is prepared from the intact data by the test device. After that the two cryptograms are compared with each other. If the cryptograms match, the data to be tested match the intact data and thus have no undesirable changes. |
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| subjects | ADVERTISING CALCULATING CHECKING-DEVICES CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHERPURPOSES INVOLVING THE NEED FOR SECRECY COMPUTING COUNTING CRYPTOGRAPHY DISPLAY EDUCATION ELECTRIC DIGITAL DATA PROCESSING HANDLING OF COINS OR OF PAPER CURRENCY OR SIMILAR VALUABLEPAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING,DISPENSING, CHANGING OR DEPOSITING PHYSICS SEALS |
| title | Method of verifying integrity of data stored on processing facility used for processing sheet-like articles such as bank notes or bills |
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