JPS6448151A - Data processor - Google Patents

Data processor

Info

Publication number
JPS6448151A
JPS6448151A JP20400987A JP20400987A JPS6448151A JP S6448151 A JPS6448151 A JP S6448151A JP 20400987 A JP20400987 A JP 20400987A JP 20400987 A JP20400987 A JP 20400987A JP S6448151 A JPS6448151 A JP S6448151A
Authority
JP
Japan
Prior art keywords
pin code
storage
card
data
code
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP20400987A
Other languages
Japanese (ja)
Inventor
Kenichi Kuroda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP20400987A priority Critical patent/JPS6448151A/en
Publication of JPS6448151A publication Critical patent/JPS6448151A/en
Pending legal-status Critical Current

Links

Landscapes

  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
  • Storage Device Security (AREA)

Abstract

PURPOSE:To improve the security of a PIN code by using a variable code, which is changed at each time of changing or reading data, as a part of the PIN code. CONSTITUTION:An IC card A consists of a CPU part 1A for control and operation, a storage part 2A for normal data storage, an input/output part 3A, a PIN code storage part 4A, etc., and a host computer C similarly consists of a CPU part 1C, a storage part 2C for normal data storage, an input/output part 3C, a PIN code storage part 4C, etc., and the variable code which is changed at each time of changing of reading data is used as parts (d) and (e) of the PIN code which is used for change or read of specific data in the IC card A. Thus, possibility that the PIN code is detected by others is reduced to reduce a probability of wrong change or wrong read of data in offline and the security of the IC card is improved.
JP20400987A 1987-08-19 1987-08-19 Data processor Pending JPS6448151A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20400987A JPS6448151A (en) 1987-08-19 1987-08-19 Data processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20400987A JPS6448151A (en) 1987-08-19 1987-08-19 Data processor

Publications (1)

Publication Number Publication Date
JPS6448151A true JPS6448151A (en) 1989-02-22

Family

ID=16483259

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20400987A Pending JPS6448151A (en) 1987-08-19 1987-08-19 Data processor

Country Status (1)

Country Link
JP (1) JPS6448151A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02273886A (en) * 1989-04-14 1990-11-08 Omron Corp Ic card device
JPH08180259A (en) * 1989-08-10 1996-07-12 Roehm Properties Bv Usage fee payment device and target supply device
JP2005044191A (en) * 2003-07-23 2005-02-17 Toppan Printing Co Ltd Storage device, authentication method in storage device, and authentication program in storage device
US7631121B2 (en) 2002-05-13 2009-12-08 Trek 2000 International Ltd. System and apparatus for compressing and decompressing data stored to a portable data storage device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02273886A (en) * 1989-04-14 1990-11-08 Omron Corp Ic card device
JPH08180259A (en) * 1989-08-10 1996-07-12 Roehm Properties Bv Usage fee payment device and target supply device
US7631121B2 (en) 2002-05-13 2009-12-08 Trek 2000 International Ltd. System and apparatus for compressing and decompressing data stored to a portable data storage device
JP2005044191A (en) * 2003-07-23 2005-02-17 Toppan Printing Co Ltd Storage device, authentication method in storage device, and authentication program in storage device

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