DE69227051T2 - Verfahren zur Entdeckung inkorrekter Überschreibung gespeicherter Daten - Google Patents

Verfahren zur Entdeckung inkorrekter Überschreibung gespeicherter Daten

Info

Publication number
DE69227051T2
DE69227051T2 DE69227051T DE69227051T DE69227051T2 DE 69227051 T2 DE69227051 T2 DE 69227051T2 DE 69227051 T DE69227051 T DE 69227051T DE 69227051 T DE69227051 T DE 69227051T DE 69227051 T2 DE69227051 T2 DE 69227051T2
Authority
DE
Germany
Prior art keywords
overwriting
discovering
incorrect
procedure
stored data
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.)
Expired - Lifetime
Application number
DE69227051T
Other languages
English (en)
Other versions
DE69227051D1 (de
Inventor
Yasuhiro Okuno
Tadashi Yamakawa
Masaaki Nagashima
Takayuki Sasaki
Takahiro Kurosawa
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.)
Canon Inc
Original Assignee
Canon Inc
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
Priority claimed from JP03032897A external-priority patent/JP3126397B2/ja
Priority claimed from JP3032898A external-priority patent/JP2821274B2/ja
Priority claimed from JP3051276A external-priority patent/JP2834591B2/ja
Priority claimed from JP03051277A external-priority patent/JP3124567B2/ja
Priority claimed from JP3051279A external-priority patent/JPH04286065A/ja
Priority claimed from JP3051273A external-priority patent/JP2875640B2/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of DE69227051D1 publication Critical patent/DE69227051D1/de
Application granted granted Critical
Publication of DE69227051T2 publication Critical patent/DE69227051T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G06F21/60—Protecting data
    • G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
    • G06F21/6209—Protecting access to data via a platform, e.g. using keys or access control rules to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself
    • 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
    • G06F12/1458—Protection against unauthorised use of memory or access to memory by checking the subject access rights
    • G06F12/1466—Key-lock mechanism
    • 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
    • G06F21/60—Protecting data
    • G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/10—Office automation; Time management
DE69227051T 1991-02-27 1992-02-26 Verfahren zur Entdeckung inkorrekter Überschreibung gespeicherter Daten Expired - Lifetime DE69227051T2 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP03032897A JP3126397B2 (ja) 1991-02-27 1991-02-27 文書処理装置及び方法
JP3032898A JP2821274B2 (ja) 1991-02-27 1991-02-27 文書処理装置及び方法
JP3051276A JP2834591B2 (ja) 1991-03-15 1991-03-15 文書処理装置及び方法
JP03051277A JP3124567B2 (ja) 1991-03-15 1991-03-15 文書処理装置及び方法
JP3051279A JPH04286065A (ja) 1991-03-15 1991-03-15 文書管理方式
JP3051273A JP2875640B2 (ja) 1991-03-15 1991-03-15 文書処理装置及び方法

Publications (2)

Publication Number Publication Date
DE69227051D1 DE69227051D1 (de) 1998-10-29
DE69227051T2 true DE69227051T2 (de) 1999-03-11

Family

ID=27549658

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69227051T Expired - Lifetime DE69227051T2 (de) 1991-02-27 1992-02-26 Verfahren zur Entdeckung inkorrekter Überschreibung gespeicherter Daten

Country Status (3)

Country Link
US (1) US5455941A (de)
EP (1) EP0501760B1 (de)
DE (1) DE69227051T2 (de)

Families Citing this family (32)

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US5347579A (en) * 1989-07-05 1994-09-13 Blandford Robert R Personal computer diary
US7036019B1 (en) 1994-04-01 2006-04-25 Intarsia Software Llc Method for controlling database copyrights
US6744894B1 (en) 1994-04-01 2004-06-01 Mitsubishi Corporation Data management system
JPH07271865A (ja) 1994-04-01 1995-10-20 Mitsubishi Corp データベース著作権管理方法
GB2288476A (en) * 1994-04-05 1995-10-18 Ibm Authentication of printed documents.
US5572590A (en) * 1994-04-12 1996-11-05 International Business Machines Corporation Discrimination of malicious changes to digital information using multiple signatures
US6741991B2 (en) 1994-09-30 2004-05-25 Mitsubishi Corporation Data management system
US6002772A (en) * 1995-09-29 1999-12-14 Mitsubishi Corporation Data management system
US7302415B1 (en) 1994-09-30 2007-11-27 Intarsia Llc Data copyright management system
EP1691315A1 (de) 1994-10-27 2006-08-16 Intarsia Software LLC Verwaltungssystem für Datenurheberrecht
US6789197B1 (en) 1994-10-27 2004-09-07 Mitsubishi Corporation Apparatus for data copyright management system
US6424715B1 (en) 1994-10-27 2002-07-23 Mitsubishi Corporation Digital content management system and apparatus
EP0715241B1 (de) 1994-10-27 2004-01-14 Mitsubishi Corporation Gerät für Dateiurheberrechte-Verwaltungssystem
US8595502B2 (en) 1995-09-29 2013-11-26 Intarsia Software Llc Data management system
US7801817B2 (en) 1995-10-27 2010-09-21 Makoto Saito Digital content management system and apparatus
US5838790A (en) * 1996-04-19 1998-11-17 Juno Online Services, L.P. Advertisement authentication system in which advertisements are downloaded for off-line display
JP4763866B2 (ja) 1998-10-15 2011-08-31 インターシア ソフトウェア エルエルシー ２重再暗号化によりデジタルデータを保護する方法及び装置
US6163859A (en) * 1998-12-02 2000-12-19 Support.Com, Inc. Software vault
US6665800B1 (en) * 1999-01-26 2003-12-16 Dell Usa, L.P. System and method for securing a computer system
JP3607153B2 (ja) * 2000-02-28 2005-01-05 シャープ株式会社 ファイル管理方法及び装置
JP4649760B2 (ja) * 2000-05-31 2011-03-16 ソニー株式会社 コンテンツ・コピー管理システム及び方法、情報処理装置及び方法、並びに、記憶媒体
JP2002207739A (ja) * 2001-01-12 2002-07-26 Ns Solutions Corp ドキュメント管理システム
JP2006186656A (ja) * 2004-12-27 2006-07-13 Canon Inc 画像処理装置、転送ジョブの管理方法、プログラムおよび記憶媒体
TWI310174B (en) * 2005-01-17 2009-05-21 Au Optronics Corp Timing control circuit with personal identifying function and applied thereof
US7924285B2 (en) * 2005-04-06 2011-04-12 Microsoft Corporation Exposing various levels of text granularity for animation and other effects
US8060747B1 (en) 2005-09-12 2011-11-15 Microsoft Corporation Digital signatures for embedded code
US8190902B2 (en) * 2006-02-27 2012-05-29 Microsoft Corporation Techniques for digital signature formation and verification
US8205087B2 (en) * 2006-02-27 2012-06-19 Microsoft Corporation Tool for digitally signing multiple documents
JP4861754B2 (ja) 2006-06-20 2012-01-25 株式会社リコー サーバ、クライアントおよびプログラム
KR100782113B1 (ko) * 2006-11-13 2007-12-05 삼성전자주식회사 메모리 카드 시스템 및 그것의 호스트 식별 정보 전송 방법
KR100841982B1 (ko) * 2007-02-08 2008-06-27 삼성전자주식회사 호스트 식별 정보를 저장하는 메모리 카드 및 그것의액세스 방법
US8271736B2 (en) * 2008-02-07 2012-09-18 International Business Machines Corporation Data block frequency map dependent caching

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3920976A (en) * 1974-08-19 1975-11-18 Sperry Rand Corp Information storage security system
US5224067A (en) * 1985-07-25 1993-06-29 Sharp Kabushiki Kaisha Electronic memo/retrieval apparatus with confidential storage
US5237678A (en) * 1987-05-08 1993-08-17 Kuechler William L System for storing and manipulating information in an information base
JPH01175057A (ja) * 1987-12-28 1989-07-11 Toshiba Corp セキュリティの動的管理方法
US4941176A (en) * 1988-08-11 1990-07-10 International Business Machines Corporation Secure management of keys using control vectors
US5121345A (en) * 1988-11-03 1992-06-09 Lentz Stephen A System and method for protecting integrity of computer data and software
US5144659A (en) * 1989-04-19 1992-09-01 Richard P. Jones Computer file protection system
DK279089D0 (da) * 1989-06-07 1989-06-07 Kommunedata I S Fremgangsmaade til overfoersel af data, et elektronisk dokument eller lignende, system til udoevelse af fremgangsmaaden samt et kort til brug ved udoevelse af fremgangsmaaden
US5239294A (en) * 1989-07-12 1993-08-24 Motorola, Inc. Method and apparatus for authenication and protection of subscribers in telecommunication systems
US5202982A (en) * 1990-03-27 1993-04-13 Sun Microsystems, Inc. Method and apparatus for the naming of database component files to avoid duplication of files
US5050212A (en) * 1990-06-20 1991-09-17 Apple Computer, Inc. Method and apparatus for verifying the integrity of a file stored separately from a computer

Also Published As

Publication number Publication date
DE69227051D1 (de) 1998-10-29
US5455941A (en) 1995-10-03
EP0501760A2 (de) 1992-09-02
EP0501760B1 (de) 1998-09-23
EP0501760A3 (en) 1993-05-05

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