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JPS5710825A - Method and apparatus for maintaining secrecy of data, program, circuit and the like - Google Patents

Method and apparatus for maintaining secrecy of data, program, circuit and the like

Info

Publication number
JPS5710825A
JPS5710825A JP8344280A JP8344280A JPS5710825A JP S5710825 A JPS5710825 A JP S5710825A JP 8344280 A JP8344280 A JP 8344280A JP 8344280 A JP8344280 A JP 8344280A JP S5710825 A JPS5710825 A JP S5710825A
Authority
JP
Japan
Prior art keywords
memory
diversion
time
data
timer
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
JP8344280A
Other languages
Japanese (ja)
Inventor
Tomomichi Usuki
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP8344280A priority Critical patent/JPS5710825A/en
Publication of JPS5710825A publication Critical patent/JPS5710825A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data

Landscapes

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

Abstract

PURPOSE:To prevent diversion of a data, a program or a circuit, and to maintain secrecy, by limiting a time when a memory can be diverted, recording the diversion of a memory, recording a movement of a circuit substrate, detecting the reset of metal fittings for setting a memory circuit substrate, etc. CONSTITUTION:A timer 2 which is able to freely set a time when a data in a memory can be read out, written or erased is provided in front of a memory read-out and write erasing device 5 of a memory 1, and a time when the memory can be utilized is set by this timer, and it is made impossible to utilize it except said time. The memory 1 is formed in one unit together with an electric power source 20, and can be attached and detached freely. An indicator 6 for displaying the timer 2 is provided on an input/output device 10, and read-out write and erase of the memory are executed by an operation control device 9. In addition, diversion of the memory is recorded by an auxiliary memory, diversion of the memory is controlled, and secrecy is maintained.
JP8344280A 1980-06-21 1980-06-21 Method and apparatus for maintaining secrecy of data, program, circuit and the like Pending JPS5710825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8344280A JPS5710825A (en) 1980-06-21 1980-06-21 Method and apparatus for maintaining secrecy of data, program, circuit and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8344280A JPS5710825A (en) 1980-06-21 1980-06-21 Method and apparatus for maintaining secrecy of data, program, circuit and the like

Publications (1)

Publication Number Publication Date
JPS5710825A true JPS5710825A (en) 1982-01-20

Family

ID=13802537

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8344280A Pending JPS5710825A (en) 1980-06-21 1980-06-21 Method and apparatus for maintaining secrecy of data, program, circuit and the like

Country Status (1)

Country Link
JP (1) JPS5710825A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS618334A (en) * 1984-06-22 1986-01-16 株式会社コロナ Production unit for corrugated board
JPS6210744A (en) * 1985-07-03 1987-01-19 シ−メンス、アクチエンゲゼルシヤフト Method and circuit for protection of secret code data
JPS62249275A (en) * 1986-04-23 1987-10-30 Hitachi Ltd Transaction system by transaction media
JPH02151785A (en) * 1988-12-05 1990-06-11 Toyo Commun Equip Co Ltd Sonobuoy

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS618334A (en) * 1984-06-22 1986-01-16 株式会社コロナ Production unit for corrugated board
JPS6210744A (en) * 1985-07-03 1987-01-19 シ−メンス、アクチエンゲゼルシヤフト Method and circuit for protection of secret code data
JPS62249275A (en) * 1986-04-23 1987-10-30 Hitachi Ltd Transaction system by transaction media
JPH02151785A (en) * 1988-12-05 1990-06-11 Toyo Commun Equip Co Ltd Sonobuoy

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