DATA PROCESSING SYSTEM
PURPOSE:To prevent a data processing system from incorrect use by checking the validity of a command outputted from an equipment in the data processing system by an IC card when the command is supplied to the IC card. CONSTITUTION:Random data are generated from a decoder 21. The random data are adde...
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| creator | KAMITAKE TAKASHI |
| description | PURPOSE:To prevent a data processing system from incorrect use by checking the validity of a command outputted from an equipment in the data processing system by an IC card when the command is supplied to the IC card. CONSTITUTION:Random data are generated from a decoder 21. The random data are added to the back of data to be transmitted to transmit both the data to the IC card 23. After receiving a command, the IC card 23 separates the random data, stores the separated data in a prescribed address of a PROM203 and writes the observed/listened data. Then, the balance is calculated. After obtaining data indicating the balance, a fixed pattern is added to the data. The fixed pattern is a digital pattern previously stored in the IC card. The obtained data are ciphered. Said random data are used as the key of the cipher. A response is constituted by adding a header to the leading part of the ciphered data. |
| format | Patent |
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CONSTITUTION:Random data are generated from a decoder 21. The random data are added to the back of data to be transmitted to transmit both the data to the IC card 23. After receiving a command, the IC card 23 separates the random data, stores the separated data in a prescribed address of a PROM203 and writes the observed/listened data. Then, the balance is calculated. After obtaining data indicating the balance, a fixed pattern is added to the data. The fixed pattern is a digital pattern previously stored in the IC card. The obtained data are ciphered. Said random data are used as the key of the cipher. A response is constituted by adding a header to the leading part of the ciphered data.</description><language>eng</language><subject>BOOK COVERS ; BOOKBINDING ; CALCULATING ; COMPUTING ; COUNTING ; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR ; FILES ; HANDLING RECORD CARRIERS ; INFORMATION STORAGE ; LOOSE LEAVES ; MOVABLE-STRIP WRITING OR READING APPARATUS ; PERFORMING OPERATIONS ; PHYSICS ; PRESENTATION OF DATA ; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES ; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR ; RECOGNITION OF DATA ; RECORD CARRIERS ; SPECIAL PRINTED MATTER ; STATIC STORES ; TRANSPORTING</subject><creationdate>1986</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19860128&DB=EPODOC&CC=JP&NR=S6120182A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19860128&DB=EPODOC&CC=JP&NR=S6120182A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KAMITAKE TAKASHI</creatorcontrib><title>DATA PROCESSING SYSTEM</title><description>PURPOSE:To prevent a data processing system from incorrect use by checking the validity of a command outputted from an equipment in the data processing system by an IC card when the command is supplied to the IC card. 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CONSTITUTION:Random data are generated from a decoder 21. The random data are added to the back of data to be transmitted to transmit both the data to the IC card 23. After receiving a command, the IC card 23 separates the random data, stores the separated data in a prescribed address of a PROM203 and writes the observed/listened data. Then, the balance is calculated. After obtaining data indicating the balance, a fixed pattern is added to the data. The fixed pattern is a digital pattern previously stored in the IC card. The obtained data are ciphered. Said random data are used as the key of the cipher. A response is constituted by adding a header to the leading part of the ciphered data.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
| recordid | cdi_epo_espacenet_JPS6120182A |
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| subjects | BOOK COVERS BOOKBINDING CALCULATING COMPUTING COUNTING DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR FILES HANDLING RECORD CARRIERS INFORMATION STORAGE LOOSE LEAVES MOVABLE-STRIP WRITING OR READING APPARATUS PERFORMING OPERATIONS PHYSICS PRESENTATION OF DATA PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR RECOGNITION OF DATA RECORD CARRIERS SPECIAL PRINTED MATTER STATIC STORES TRANSPORTING |
| title | DATA PROCESSING SYSTEM |
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