JPS6048555A - Security system of magnetic card read-write device - Google Patents

Security system of magnetic card read-write device

Info

Publication number
JPS6048555A
JPS6048555A JP58155474A JP15547483A JPS6048555A JP S6048555 A JPS6048555 A JP S6048555A JP 58155474 A JP58155474 A JP 58155474A JP 15547483 A JP15547483 A JP 15547483A JP S6048555 A JPS6048555 A JP S6048555A
Authority
JP
Japan
Prior art keywords
magnetic card
ram3
read
switch
write device
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
JP58155474A
Other languages
Japanese (ja)
Inventor
Yuichi Muta
牟田　祐一
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.)
Fujitsu Frontech Ltd
Original Assignee
Fujitsu Frontech 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 Fujitsu Frontech Ltd filed Critical Fujitsu Frontech Ltd
Priority to JP58155474A priority Critical patent/JPS6048555A/en
Publication of JPS6048555A publication Critical patent/JPS6048555A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/14—Protection against unauthorised use of memory or access to memory

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Storage Device Security (AREA)

Abstract

PURPOSE:To prevent forgery or forging by providing a switch for detecting a fact that a case of a read/write device of a magnetic card is closed, and cutting off an electric power source of a memory when the switch is opened, so that read and write cannot be executed. CONSTITUTION:When a power source is turned on to a magnetic card read/ write device, an ROM1 is started, a CPU2 checks the contents of a specified address of an RAM3 in accordance with a program stored in the ROM1, and when a normal data is stored, the CPU2 delivers a control right to the RAM3. Thereafter, the CPU2 gives an indication to an input/output selecting circuit 4 in accordance with an executing program stored in the RAM3, selects the magnetic card read/write device 5, and reads or writes a data of the RAM3 in accordance with a read/write signal. Usually, as for the RAM3, the contents are protected by a backup power source 6, but when a case is opened, a switch 7 is opened, and the contents are broken down. In this way, an illegal act is prevented.

Description

【発明の詳細な説明】 ｆａ１発明の技術分野 本発明は磁気カード読取り一書込み装置に係り、とくに
該装置のメモリに格納されているプロゲラＪ・の不特定
者による変更を防止するための方式に関する。DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a magnetic card reading/writing device, and more particularly to a method for preventing unauthorized persons from changing the progera stored in the memory of the device. .

ｆｂ）技術の背景 磁気カードの利用は、銀行等における現金出納業務、商
品の信用販売、その他各種の１０カードに見られる識別
処理以外に、出退管理用のタイムレコーダ等にも用いら
れるようになりつつある。fb) Background of the technology Magnetic cards have come to be used not only for cash handling operations at banks, credit sales of products, and other types of identification processing seen in 10 cards, but also for time recorders for check-in and exit management. It's coming.

このような磁気カードの利用の普及にともない、磁気カ
ード読取り一書込み装置には、不特定者による磁気カー
ドデータの読取りおよび書込みを不可能とする防護措置
が不可欠となっている。すなわち、該磁気カート読取り
一再込み装置のメモリに格納されているプログラムを解
読することによって、磁気カードに書込まれるデータの
フォーマントを知り、磁気カードを偽造することが可能
であり、またすでに書込まれているデータを改窟するこ
とも可能である。With the widespread use of such magnetic cards, it has become essential for magnetic card reading and writing devices to take protective measures to prevent unauthorized persons from reading and writing magnetic card data. That is, by decoding the program stored in the memory of the magnetic cart reading/reloading device, it is possible to know the format of the data written to the magnetic card and to forge the magnetic card. It is also possible to modify the stored data.

（Ｃ１従来技術と問題点 このために、従来の磁気カード読取り一書込み装置にお
いては、該プログラムを格納したメモリ（通常ＲＯＭ）
および中央処理装置（ｃｐｕ　＞のアドレスバスの接続
を急識的に不規則にする等によって、プログラムの解読
を困Ｈｃにするような対策が採られているが、この方式
では、時間をかげればプログラムの解読が不可能ではな
く、その結果、該プログラムが修止され、磁気カードの
偽造あるいはデータの改冨が行われることを完全に防止
できない欠点があった。(C1 Prior art and problems) For this reason, in conventional magnetic card reading and writing devices, the memory (usually ROM) that stores the program is
Countermeasures have been taken to make it difficult to decipher the program, such as by suddenly making the connection of the address bus of the central processing unit (CPU) irregular, but this method saves time. For example, it is not impossible to decode the program, and as a result, there is a drawback that it is not possible to completely prevent the program from being modified and the magnetic card being forged or the data being altered.

（ｄ）発明の目的 本発明は、磁気カート読取り一書込み装置においζ、外
部からはメモリの内容を読出ずことが不ｕＪｆｉヒな保
護機能をイ・］与しておくごとにより、セキュリティを
保１１１１．する方式を提供することを目的とする。(d) Purpose of the Invention The present invention maintains security by providing a magnetic cart reading/writing device with a protection function that prevents the contents of the memory from being read from the outside. 1111. The purpose is to provide a method to do this.

（＋・）発明のイＡＹ成 本発明は、Ｇ〉気カート”読取り一書込み装置において
、装置の筐体が開面されたことを検出するスイッチを設
り、該スイッチが作動した場合にはメモリに対−Ｊ゛る
？ｔｌ源をり月りｉすることを特徴とする。(+・) ADVANTAGE OF THE INVENTION The present invention provides a switch for detecting that the casing of the device is opened in the reading/writing device of the G〉cart, and when the switch is activated, the memory It is characterized by the fact that it replaces the J's tl source.

（ｆ）発明の実施例 以下に本発明の実施例を図面を参照して説明−３−る。(f) Examples of the invention Embodiments of the present invention will be described below with reference to the drawings.

図は本発明に係る方式の磁気カード読取り一書込み装置
ｉ”＋：の機能フロック図であって、該磁気カート′読
取り一吉込み装置ｔシステムの１ｈ源が投入されると、
読出し専用メモリ　（ＩｉＯＭ）　１が起動され、中央
処理装め：　（ＣＰＩＩ　）　２は核間Ｍ　ｌに格納さ
れている初期プログラムにしたがって７１、替え１」Ｊ
能なメモリ　（１祐ト１）３の特定のアドレスの内容を
チェックし、ｊ亥アドレスに正常なデータカ・格１１１
１されている場合には、制御権をＲ計３に渡す。く圧密
なデータが確認出来ない場合には、以後の動作を行わな
い。） こののち、Ｃ１ｌυ２はＩ？刊３に格納されいる実行プ
ログラムにしたかって、入出力装置選択回路（１１０５
ＥＬＩＥＣＴ）　４に指刀くを与え、これにより磁気カ
ード読取り−１３・込み装置キ１°５が選択され、ｌ１
０ＳＥＬＥＣＴ　４からのり一ド／ライトイ、４号にし
たがっ゛で＋＋ｎＭ：（のデータの読取りあるいは書込
すか行われる。通電、ＩＩＡＭ３は内蔵のハ、クアソブ
電’ｊＭ　６によってその内容が保持されている。The figure is a functional block diagram of the magnetic card reading/writing device i"+: of the system according to the present invention, and when the 1h source of the magnetic card reading/writing device t system is turned on,
The read-only memory (IiOM) 1 is activated and the central processing unit: (CPII) 2 is activated according to the initial program stored in the internuclear Ml.
Check the contents of a specific address in the valid memory (1 yut 1) 3, and insert a normal data file into the y address.
1, the control right is passed to R total 3. If highly compacted data cannot be confirmed, no further operations will be performed. ) After this, C1lυ2 becomes I? If you want to use the execution program stored in the third edition, input/output device selection circuit (1105
ELIECT) 4, which selects the magnetic card reader-13/include device key 1°5, and selects l1.
0SELECT 4 to read/write data, according to No. 4, read or write data in ++nM: .

本発明によれば、１７４Ｍ３とパノクアノゾ電源らとの
間にスイッチ７が設けゆれる。該スイッチ７は該磁気カ
ート読取り一書込み装置の１１２体が閉面されζいる状
態では閉じられＣおり、ｌｌＡＭ３は前記バ・ツクアッ
プ電伽６または外部直流電伽により電力か供給され、そ
の内容が保持され−ζいるが、不特定壱が１ｚ訂１３の
ｔ）ｑ容を読出ず忌図のもとに、該筐体を開面した場合
には、スイッチ７が開き、１１Δ１・１３に対する電力
の供給が停止される。その結呆、Ｉ昂ト）３に格納され
ているプログラムは消去されてしまい、ｌｉ’ｊｔ出す
ことができな（なる。このよっにして、Ｉ亥磁気カード
読取り一吉込め装置におい′（は、プ１：Ｊクラ１２の
修止はもらろん、磁気カートの変造あるいはデータの改
京が不ＩＪＩ能となる。According to the present invention, the switch 7 is provided between the 174M3 and the panoquanozo power supply. The switch 7 is closed when the magnetic cart reading/writing device 112 is closed, and the AM3 is supplied with power by the backup power cable 6 or an external DC power cable, and its contents are retained. However, if the unspecified case is opened without reading the t)q contents of 1z revision 13, the switch 7 will open and the power to 11Δ1 and 13 will be reduced. Supply is stopped. As a result, the program stored in the computer 3 is erased and cannot be retrieved.As a result, the program stored in the magnetic card reader , P1: Of course, it is impossible to fix J-Kura12, but it becomes impossible to tamper with the magnetic cart or modify the data.

なお、上記のよりにして１７４月３の内容が消去されて
しまった場合には、専任の保守者によってプログラムの
肉と込めが必要であることは呂゛〕までもない。It goes without saying that if the contents of 174/3 are deleted as described above, a full-time maintainer will need to refine the program.

（１ｚ）発明のりＪ果 本発明によれば、磁気カート’　Ｍｔ取り一書込み装置
Ｉ”４１のセキュリティが保ｊ＋Ｅされ、とくに修正が
禁止されている特定のデータを重点的に保護することが
ｒＪＪ６Ｆ４となるノこめに、磁気カート′の偽装ある
いはデータの改京を確実に防止できる効果がある。(1z) Results of the Invention According to the present invention, the security of the magnetic cart' Mt take-up and writing device I'41 is maintained, and in particular, it is possible to protect specific data whose modification is prohibited rJJ6F4. This has the effect of reliably preventing falsification of magnetic carts or alteration of data.

【図面の簡単な説明】[Brief explanation of the drawing]

図は本発明に係る磁気カー１−読取り一書込め装置の機
能ブロック図である。 図において、■はＩぜＯｉｌ、２はＣＩ）Ｕ　、３は１
ン八門、４はＩｌｏ　５ＩＥＣＴ、５は磁気カートｉノ
ｌＬ取り一吉込み装置、６はパノクア・７ゾ９１　ｊＪ
ＪＩｊ、■はスイッチである。The figure is a functional block diagram of a magnetic car 1-reading and writing device according to the present invention. In the figure, ■ is IzeOil, 2 is CI)U, 3 is 1
8 gates, 4 is Ilo 5IECT, 5 is magnetic cart ino lL take-in device, 6 is Panoqua 7zo 91 jJ
JIj, ■ is a switch.

Claims (1)

【特許請求の範囲】[Claims] 磁気カード読取り一書込み装置において、装置の筐体が
関西されたごとを検出するスイッチを設け、該スイッチ
が作動した場合にはメモリに対する電源を切断すること
を特徴とする磁気カード読取り一書込み装置のセキュリ
ティ方式・A magnetic card reading/writing device characterized in that the magnetic card reading/writing device is provided with a switch that detects when the casing of the device is moved, and when the switch is activated, the power to the memory is cut off. Security method/
JP58155474A 1983-08-25 1983-08-25 Security system of magnetic card read-write device Pending JPS6048555A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58155474A JPS6048555A (en) 1983-08-25 1983-08-25 Security system of magnetic card read-write device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58155474A JPS6048555A (en) 1983-08-25 1983-08-25 Security system of magnetic card read-write device

Publications (1)

Publication Number Publication Date
JPS6048555A true JPS6048555A (en) 1985-03-16

Family

ID=15606836

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58155474A Pending JPS6048555A (en) 1983-08-25 1983-08-25 Security system of magnetic card read-write device

Country Status (1)

Country Link
JP (1) JPS6048555A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61228569A (en) * 1985-04-02 1986-10-11 Omron Tateisi Electronics Co Secret information memory device
JPS61168438U (en) * 1985-04-02 1986-10-18
JPS62241052A (en) * 1986-04-11 1987-10-21 Nippon Telegr & Teleph Corp <Ntt> Magnetic card recording and reproducing device
US5168151A (en) * 1989-06-12 1992-12-01 Kabushiki Kaisha Toshiba Portable electronic device having a memory with restricted access in off-line modes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61228569A (en) * 1985-04-02 1986-10-11 Omron Tateisi Electronics Co Secret information memory device
JPS61168438U (en) * 1985-04-02 1986-10-18
JPS62241052A (en) * 1986-04-11 1987-10-21 Nippon Telegr & Teleph Corp <Ntt> Magnetic card recording and reproducing device
US5168151A (en) * 1989-06-12 1992-12-01 Kabushiki Kaisha Toshiba Portable electronic device having a memory with restricted access in off-line modes

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