JPH04163649A - Data protective system for external storage device - Google Patents

Data protective system for external storage device

Info

Publication number
JPH04163649A
JPH04163649A JP28835590A JP28835590A JPH04163649A JP H04163649 A JPH04163649 A JP H04163649A JP 28835590 A JP28835590 A JP 28835590A JP 28835590 A JP28835590 A JP 28835590A JP H04163649 A JPH04163649 A JP H04163649A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
pass word
storage device
information
external storage
word
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
JP28835590A
Inventor
Minoru Watanabe
Original Assignee
Toshiba Corp
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

Links

Abstract

PURPOSE: To protect information so that the contents of an external storage device can not be decoded carelessly by comparing data protection information in the storage device with a pass word (key data) from a system, and canceling protection by the coincidence of the pass word.
CONSTITUTION: A system interface control circuit 3 in the external storage device 2 immediately after the start of the system is made to accept only a pass word (key word) command. On the reception of the pass word command from a host system 1, it is checked whether the sent pass word coincides with the contents of a memory 5 for the pass word, that is, the pass word for protecting the data or not. If the contents coincide, the usual exchange of the information is permitted. Thus, an operator not knowing the pass word can not access the information, and the information of a storage medium 4 in the external storage device 2 can be protected.
COPYRIGHT: (C)1992,JPO&Japio
JP28835590A 1990-10-29 1990-10-29 Data protective system for external storage device Pending JPH04163649A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28835590A JPH04163649A (en) 1990-10-29 1990-10-29 Data protective system for external storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28835590A JPH04163649A (en) 1990-10-29 1990-10-29 Data protective system for external storage device

Publications (1)

Publication Number Publication Date
JPH04163649A true true JPH04163649A (en) 1992-06-09

Family

ID=17729138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28835590A Pending JPH04163649A (en) 1990-10-29 1990-10-29 Data protective system for external storage device

Country Status (1)

Country Link
JP (1) JPH04163649A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07200287A (en) * 1993-12-16 1995-08-04 Internatl Business Mach Corp <Ibm> Protected program type memory cartridge and computer system using the same
US7165267B1 (en) 1998-03-16 2007-01-16 Fujitsu Limited Storing apparatus and password control method
KR100830910B1 (en) * 2005-04-21 2008-05-22 샤프 가부시키가이샤 Semiconductor memory device
JP2008187539A (en) * 2007-01-30 2008-08-14 Nec Corp Directory server, verification method using password and program
US8219813B2 (en) 2001-10-29 2012-07-10 Seagate Technology Llc System and method for protecting a peripheral device against hot plug attacks

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07200287A (en) * 1993-12-16 1995-08-04 Internatl Business Mach Corp <Ibm> Protected program type memory cartridge and computer system using the same
US7165267B1 (en) 1998-03-16 2007-01-16 Fujitsu Limited Storing apparatus and password control method
US7302581B2 (en) 1998-03-16 2007-11-27 Fujitsu Limited Storing apparatus and password control method
US8219813B2 (en) 2001-10-29 2012-07-10 Seagate Technology Llc System and method for protecting a peripheral device against hot plug attacks
KR100830910B1 (en) * 2005-04-21 2008-05-22 샤프 가부시키가이샤 Semiconductor memory device
JP2008187539A (en) * 2007-01-30 2008-08-14 Nec Corp Directory server, verification method using password and program
JP4586806B2 (en) * 2007-01-30 2010-11-24 日本電気株式会社 Directory server, authentication method and program using a password

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