CA2064640A1 - Storage protection utilizing public key control - Google Patents
Storage protection utilizing public key controlInfo
- Publication number
- CA2064640A1 CA2064640A1 CA2064640A CA2064640A CA2064640A1 CA 2064640 A1 CA2064640 A1 CA 2064640A1 CA 2064640 A CA2064640 A CA 2064640A CA 2064640 A CA2064640 A CA 2064640A CA 2064640 A1 CA2064640 A1 CA 2064640A1
- Authority
- CA
- Canada
- Prior art keywords
- level
- access
- key
- storage
- public
- 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.)
- Granted
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
- G06F12/1458—Protection against unauthorised use of memory or access to memory by checking the subject access rights
- G06F12/1491—Protection against unauthorised use of memory or access to memory by checking the subject access rights in a hierarchical protection system, e.g. privilege levels, memory rings
Abstract
Provides three access levels of storage key protection, comprising a supervisory level (key 0), an intermediate level of non-public and non-supervisory keys (keys 1-8, 10-15), and a unique public level (key 9). The program routines operating with a supervisory-level access key can access both the public level and the intermediate level of storage blocks. Although a program routine operating with an access key in the intermediate access level cannot access any supervisory level storage block, it can access any block assigned a public level storage key, as well as any storage block assigned the respective intermediate level key. One or more third-level public storage keys (PSKs) may be provided. A program access key using one of the PSK values can only access blocks having the same PSK value, and it cannot access blocks having any other key value.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US710,875 | 1991-06-06 | ||
US07/710,875 US5163096A (en) | 1991-06-06 | 1991-06-06 | Storage protection utilizing public storage key control |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2064640A1 true CA2064640A1 (en) | 1992-12-07 |
CA2064640C CA2064640C (en) | 1995-12-12 |
Family
ID=24855901
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002064640A Expired - Fee Related CA2064640C (en) | 1991-06-06 | 1992-04-01 | Storage protection utilizing public key control |
Country Status (8)
Country | Link |
---|---|
US (1) | US5163096A (en) |
EP (1) | EP0587587A1 (en) |
JP (1) | JPH0736171B2 (en) |
CA (1) | CA2064640C (en) |
HU (1) | HUT67635A (en) |
PL (1) | PL170547B1 (en) |
SK (1) | SK136193A3 (en) |
WO (1) | WO1992022032A1 (en) |
Families Citing this family (53)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5335334A (en) * | 1990-08-31 | 1994-08-02 | Hitachi, Ltd. | Data processing apparatus having a real memory region with a corresponding fixed memory protection key value and method for allocating memories therefor |
US5341422A (en) * | 1992-09-17 | 1994-08-23 | International Business Machines Corp. | Trusted personal computer system with identification |
US5491752A (en) * | 1993-03-18 | 1996-02-13 | Digital Equipment Corporation, Patent Law Group | System for increasing the difficulty of password guessing attacks in a distributed authentication scheme employing authentication tokens |
US5475829A (en) * | 1993-03-22 | 1995-12-12 | Compaq Computer Corp. | Computer system which overrides write protection status during execution in system management mode |
US5351295A (en) * | 1993-07-01 | 1994-09-27 | Digital Equipment Corporation | Secure method of neighbor discovery over a multiaccess medium |
US5483598A (en) * | 1993-07-01 | 1996-01-09 | Digital Equipment Corp., Patent Law Group | Message encryption using a hash function |
US5475763A (en) * | 1993-07-01 | 1995-12-12 | Digital Equipment Corp., Patent Law Group | Method of deriving a per-message signature for a DSS or El Gamal encryption system |
JPH07271865A (en) | 1994-04-01 | 1995-10-20 | Mitsubishi Corp | Method for managing copyright of data base |
US7036019B1 (en) * | 1994-04-01 | 2006-04-25 | Intarsia Software Llc | Method for controlling database copyrights |
US5590309A (en) * | 1994-04-01 | 1996-12-31 | International Business Machines Corporation | Storage protection cache and backing storage having system control element data cache pipeline and storage protection bits in a stack array with a stack directory for the stack array |
JP2970739B2 (en) * | 1994-09-30 | 1999-11-02 | 日本ビクター株式会社 | Optical disc playback control method |
US7302415B1 (en) | 1994-09-30 | 2007-11-27 | Intarsia Llc | Data copyright management system |
US6424715B1 (en) * | 1994-10-27 | 2002-07-23 | Mitsubishi Corporation | Digital content management system and apparatus |
DE69532434T2 (en) | 1994-10-27 | 2004-11-11 | Mitsubishi Corp. | Device for file copyright management system |
US8595502B2 (en) | 1995-09-29 | 2013-11-26 | Intarsia Software Llc | Data management system |
JP3786993B2 (en) * | 1995-12-14 | 2006-06-21 | 株式会社日立製作所 | Data storage unit and data storage device using the unit |
US5724551A (en) * | 1996-05-23 | 1998-03-03 | International Business Machines Corporation | Method for managing I/O buffers in shared storage by structuring buffer table having entries include storage keys for controlling accesses to the buffers |
US5787309A (en) * | 1996-05-23 | 1998-07-28 | International Business Machines Corporation | Apparatus for protecting storage blocks from being accessed by unwanted I/O programs using I/O program keys and I/O storage keys having M number of bits |
US5802397A (en) * | 1996-05-23 | 1998-09-01 | International Business Machines Corporation | System for storage protection from unintended I/O access using I/O protection key by providing no control by I/O key entries over access by CP entity |
US5900019A (en) * | 1996-05-23 | 1999-05-04 | International Business Machines Corporation | Apparatus for protecting memory storage blocks from I/O accesses |
US5809546A (en) * | 1996-05-23 | 1998-09-15 | International Business Machines Corporation | Method for managing I/O buffers in shared storage by structuring buffer table having entries including storage keys for controlling accesses to the buffers |
JP3228182B2 (en) * | 1997-05-29 | 2001-11-12 | 株式会社日立製作所 | Storage system and method for accessing storage system |
US6229894B1 (en) * | 1997-07-14 | 2001-05-08 | Entrust Technologies, Ltd. | Method and apparatus for access to user-specific encryption information |
US6182174B1 (en) * | 1998-04-13 | 2001-01-30 | International Business Machines Corporation | Memory card interface method using multiplexed storage protect key to indicate command acceptance |
US7171567B1 (en) * | 1999-08-02 | 2007-01-30 | Harris Interactive, Inc. | System for protecting information over the internet |
US7391865B2 (en) | 1999-09-20 | 2008-06-24 | Security First Corporation | Secure data parser method and system |
EP1218860A2 (en) * | 1999-09-20 | 2002-07-03 | Ethentica, Inc. | Cryptographic server with provisions for interoperability between cryptographic systems |
JP2001167040A (en) | 1999-12-14 | 2001-06-22 | Hitachi Ltd | Memory subsystem and memory control unit |
US6684209B1 (en) * | 2000-01-14 | 2004-01-27 | Hitachi, Ltd. | Security method and system for storage subsystem |
US7657727B2 (en) * | 2000-01-14 | 2010-02-02 | Hitachi, Ltd. | Security for logical unit in storage subsystem |
JP4651230B2 (en) * | 2001-07-13 | 2011-03-16 | 株式会社日立製作所 | Storage system and access control method to logical unit |
US6748592B1 (en) * | 2000-02-14 | 2004-06-08 | Xoucin, Inc. | Method and apparatus for protectively operating a data/information processing device |
JP4719957B2 (en) * | 2000-05-24 | 2011-07-06 | 株式会社日立製作所 | Storage control device, storage system, and storage system security setting method |
US7539828B2 (en) * | 2000-08-08 | 2009-05-26 | Faronics Corporation | Method and system for automatically preserving persistent storage |
US6807602B1 (en) * | 2000-10-30 | 2004-10-19 | Hewlett-Packard Development Company, L.P. | System and method for mapping bus addresses to memory locations utilizing access keys and checksums |
AU2003246111A1 (en) * | 2003-07-07 | 2005-01-21 | Lg Electronics, Inc. | Upgrade apparatus and its method for home network system |
CA2922172A1 (en) | 2004-10-25 | 2006-05-04 | Security First Corp. | Secure data parser method and system |
CA2629015A1 (en) | 2005-11-18 | 2008-05-08 | Rick L. Orsini | Secure data parser method and system |
US7634708B2 (en) * | 2006-09-15 | 2009-12-15 | International Business Machines Corporation | Relocatable storage protect keys for system main memory |
AU2007328025B2 (en) | 2006-12-05 | 2012-08-09 | Don Martin | Improved tape backup method |
CN101765846B (en) | 2007-08-01 | 2013-10-23 | Nxp股份有限公司 | Mobile communication device and method for disabling applications |
AU2008299852B2 (en) | 2007-09-14 | 2014-04-03 | Security First Corp. | Systems and methods for managing cryptographic keys |
BRPI0906863A8 (en) | 2008-01-07 | 2018-10-30 | Security First Corp | systems and methods for data protection using multifactor keyed dispersion |
CA2716335A1 (en) | 2008-02-22 | 2009-08-27 | Stephen C. Bono | Systems and methods for secure workgroup management and communication |
CN104079573A (en) | 2009-05-19 | 2014-10-01 | 安全第一公司 | Systems and methods for securing data in the cloud |
JP5650238B2 (en) | 2009-11-25 | 2015-01-07 | セキュリティー ファースト コープ. | System and method for securing data in motion |
CA2795206C (en) | 2010-03-31 | 2014-12-23 | Rick L. Orsini | Systems and methods for securing data in motion |
WO2011150346A2 (en) | 2010-05-28 | 2011-12-01 | Laurich Lawrence A | Accelerator system for use with secure data storage |
EP2619939A2 (en) | 2010-09-20 | 2013-07-31 | Rick L. Orsini | Systems and methods for secure data sharing |
JP5541275B2 (en) | 2011-12-28 | 2014-07-09 | 富士通株式会社 | Information processing apparatus and unauthorized access prevention method |
US8918885B2 (en) * | 2012-02-09 | 2014-12-23 | International Business Machines Corporation | Automatic discovery of system integrity exposures in system code |
US10146707B2 (en) | 2017-03-14 | 2018-12-04 | International Business Machines Corporation | Hardware-based memory protection |
GB2576005B (en) * | 2018-07-31 | 2020-10-07 | Advanced Risc Mach Ltd | Handling guard tag loss |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1562429A (en) * | 1967-04-11 | 1969-04-04 | ||
US3576544A (en) * | 1968-10-18 | 1971-04-27 | Ibm | Storage protection system |
US3761883A (en) * | 1972-01-20 | 1973-09-25 | Ibm | Storage protect key array for a multiprocessing system |
US3825903A (en) * | 1973-04-30 | 1974-07-23 | Ibm | Automatic switching of storage protect keys |
US4405829A (en) * | 1977-12-14 | 1983-09-20 | Massachusetts Institute Of Technology | Cryptographic communications system and method |
US4424414A (en) * | 1978-05-01 | 1984-01-03 | Board Of Trustees Of The Leland Stanford Junior University | Exponentiation cryptographic apparatus and method |
US4366537A (en) * | 1980-05-23 | 1982-12-28 | International Business Machines Corp. | Authorization mechanism for transfer of program control or data between different address spaces having different storage protect keys |
US4471163A (en) * | 1981-10-05 | 1984-09-11 | Donald Thomas C | Software protection system |
US4472790A (en) * | 1982-02-05 | 1984-09-18 | International Business Machines Corporation | Storage fetch protect override controls |
AU542447B2 (en) * | 1982-02-27 | 1985-02-21 | Fujitsu Limited | System for controlling key storage unit |
JPS5958700A (en) * | 1982-09-29 | 1984-04-04 | Fujitsu Ltd | Memory protection judge method |
US4668318A (en) * | 1983-12-19 | 1987-05-26 | The Goodyear Tire & Rubber Company | Method for producing braided spiral reinforced hose |
-
1991
- 1991-06-06 US US07/710,875 patent/US5163096A/en not_active Expired - Lifetime
-
1992
- 1992-04-01 CA CA002064640A patent/CA2064640C/en not_active Expired - Fee Related
- 1992-04-24 JP JP4106473A patent/JPH0736171B2/en not_active Expired - Lifetime
- 1992-04-29 WO PCT/EP1992/000926 patent/WO1992022032A1/en not_active Application Discontinuation
- 1992-04-29 SK SK1361-93A patent/SK136193A3/en unknown
- 1992-04-29 PL PL92300810A patent/PL170547B1/en unknown
- 1992-04-29 EP EP92909416A patent/EP0587587A1/en not_active Withdrawn
- 1992-04-29 HU HU9303459A patent/HUT67635A/en unknown
Also Published As
Publication number | Publication date |
---|---|
JPH05204762A (en) | 1993-08-13 |
SK136193A3 (en) | 1994-08-10 |
WO1992022032A1 (en) | 1992-12-10 |
HU9303459D0 (en) | 1994-04-28 |
PL170547B1 (en) | 1996-12-31 |
US5163096A (en) | 1992-11-10 |
HUT67635A (en) | 1995-04-28 |
JPH0736171B2 (en) | 1995-04-19 |
CA2064640C (en) | 1995-12-12 |
EP0587587A1 (en) | 1994-03-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2064640A1 (en) | Storage protection utilizing public key control | |
CA2360785A1 (en) | Multiple level public key hierarchy for performance and high security | |
CA2010232A1 (en) | Apparatus for determining battery type and modifying operating characteristics | |
CA2064769A1 (en) | Encryption system | |
EP0383310A3 (en) | Water and oil repellants | |
EP0609061A3 (en) | Polymerizable composition, polymer, organic glass and ophthalmic lens. | |
DE69427571D1 (en) | Memory access protection circuit with cryptographic key | |
EP0633387A3 (en) | Earth-boring bit with improved cutting structure. | |
CA2049133A1 (en) | Methods and apparatus for implementing data bases to provide object-oriented invocation of applications | |
GB2375204A (en) | Automated portfolio selection system | |
CA2222029A1 (en) | Slice predictor for a signal receiver | |
MY115251A (en) | Blends of elastomer block copolymer and aliphatic (alpha)-olefin/monovinylidene aromatic monomer and/or hindered aliphatic vinylidene monomer interpolymer | |
CA2257429A1 (en) | Method for group-based cryptographic code management between a first computer unit and group computer units | |
EP0805607A3 (en) | Method for accessing at least a part of the data of a microprocessor card | |
ES2145045T3 (en) | HEAT TREATABLE MIXTURES OF AROMATIC POLYESTERS AND HIGH MODULE POLYURETHANES. | |
EP0637103A3 (en) | Break away key and latch assembly. | |
USD255899S (en) | Code entry terminal for security access system | |
AU7697394A (en) | 4-alkylamino-1-phenoxyalkyl piperidines as antiinflammatory, antiallergic and immunomodulating agents | |
GB2343087A (en) | A security apparatus for a telephone line and a method for securing a telephone line | |
CA2036408A1 (en) | Blends based on vinyl aromatic polymers endowed with high mechanical characteristics | |
Boettcher | Man-machine: how Sizewell B matches up to EPRI requirements | |
AU6428194A (en) | Rail arrangement | |
CA2064257A1 (en) | Electronic register | |
DE8902555U1 (en) | ||
JPS5730046A (en) | List processor of reference counter system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |