CA1213070A - Bloc memoire comportant une memoire et un circuit de protection - Google Patents
Bloc memoire comportant une memoire et un circuit de protectionInfo
- Publication number
- CA1213070A CA1213070A CA000452806A CA452806A CA1213070A CA 1213070 A CA1213070 A CA 1213070A CA 000452806 A CA000452806 A CA 000452806A CA 452806 A CA452806 A CA 452806A CA 1213070 A CA1213070 A CA 1213070A
- Authority
- CA
- Canada
- Prior art keywords
- program
- address
- word
- processing system
- memory
- 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
Links
- 230000004224 protection Effects 0.000 title claims abstract description 22
- 230000004048 modification Effects 0.000 claims abstract description 38
- 238000012986 modification Methods 0.000 claims abstract description 38
- 230000004907 flux Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims 1
- 230000002349 favourable effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
- G06F21/12—Protecting executable software
- G06F21/121—Restricting unauthorised execution of programs
- G06F21/125—Restricting unauthorised execution of programs by manipulating the program code, e.g. source code, compiled code, interpreted code, machine code
-
- 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
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
- G06F21/12—Protecting executable software
- G06F21/121—Restricting unauthorised execution of programs
- G06F21/123—Restricting unauthorised execution of programs by using dedicated hardware, e.g. dongles, smart cards, cryptographic processors, global positioning systems [GPS] devices
Landscapes
- Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Theoretical Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Technology Law (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Storage Device Security (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US48741183A | 1983-04-29 | 1983-04-29 | |
US487,411 | 1983-04-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1213070A true CA1213070A (fr) | 1986-10-21 |
Family
ID=23935622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000452806A Expired CA1213070A (fr) | 1983-04-29 | 1984-04-26 | Bloc memoire comportant une memoire et un circuit de protection |
Country Status (10)
Country | Link |
---|---|
JP (1) | JPS603024A (fr) |
CA (1) | CA1213070A (fr) |
DE (1) | DE3415209A1 (fr) |
FR (1) | FR2545244B1 (fr) |
GB (1) | GB2140592B (fr) |
HK (1) | HK38788A (fr) |
IE (1) | IE55440B1 (fr) |
IT (1) | IT1209538B (fr) |
SE (1) | SE462188B (fr) |
SG (1) | SG10488G (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60177498A (ja) * | 1984-02-23 | 1985-09-11 | Fujitsu Ltd | 半導体記憶装置 |
GB8507427D0 (en) * | 1985-03-21 | 1985-05-01 | Robertson J A | Prevention of soft & hardware copying |
DE3526130A1 (de) * | 1985-07-22 | 1987-01-29 | Lang Klaus Dipl Ing | Digitaler programmschutzbaustein |
GB2381625C (en) | 2000-07-18 | 2008-12-12 | Bitarts Ltd | Digital data protection arrangement |
FR2823398B1 (fr) | 2001-04-04 | 2003-08-15 | St Microelectronics Sa | Extraction d'une donnee privee pour authentification d'un circuit integre |
FR2825873A1 (fr) * | 2001-06-11 | 2002-12-13 | St Microelectronics Sa | Stockage protege d'une donnee dans un circuit integre |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4120030A (en) * | 1977-03-11 | 1978-10-10 | Kearney & Trecker Corporation | Computer software security system |
US4306289A (en) * | 1980-02-04 | 1981-12-15 | Western Electric Company, Inc. | Digital computer having code conversion apparatus for an encrypted program |
US4377844A (en) * | 1980-02-20 | 1983-03-22 | Marc Kaufman | Address translator |
GB2099616A (en) * | 1981-06-03 | 1982-12-08 | Jpm Automatic Machines Ltd | Improvements relating to microprocessor units |
GB2114331B (en) * | 1982-01-06 | 1985-10-09 | Emi Ltd | Program storage hardware |
NL8201847A (nl) * | 1982-05-06 | 1983-12-01 | Philips Nv | Inrichting voor het beschermen tegen onbevoegd uitlezen van in een geheugen te memoriseren programmawoorden. |
-
1984
- 1984-04-21 DE DE19843415209 patent/DE3415209A1/de not_active Withdrawn
- 1984-04-26 GB GB08410712A patent/GB2140592B/en not_active Expired
- 1984-04-26 SE SE8402285A patent/SE462188B/sv not_active IP Right Cessation
- 1984-04-26 IT IT8420695A patent/IT1209538B/it active
- 1984-04-26 CA CA000452806A patent/CA1213070A/fr not_active Expired
- 1984-04-26 IE IE1019/84A patent/IE55440B1/en unknown
- 1984-04-27 JP JP59084181A patent/JPS603024A/ja active Granted
- 1984-04-27 FR FR848406677A patent/FR2545244B1/fr not_active Expired - Lifetime
-
1988
- 1988-02-05 SG SG104/88A patent/SG10488G/en unknown
- 1988-05-26 HK HK387/88A patent/HK38788A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
IT1209538B (it) | 1989-08-30 |
SE8402285L (sv) | 1984-10-30 |
JPS603024A (ja) | 1985-01-09 |
JPH0334103B2 (fr) | 1991-05-21 |
GB2140592A (en) | 1984-11-28 |
DE3415209A1 (de) | 1984-10-31 |
FR2545244A1 (fr) | 1984-11-02 |
GB2140592B (en) | 1987-10-21 |
FR2545244B1 (fr) | 1990-05-04 |
IE841019L (en) | 1984-10-28 |
HK38788A (en) | 1988-06-03 |
IT8420695A0 (it) | 1984-04-26 |
IE55440B1 (en) | 1990-09-12 |
SE462188B (sv) | 1990-05-14 |
SE8402285D0 (sv) | 1984-04-26 |
GB8410712D0 (en) | 1984-05-31 |
SG10488G (en) | 1988-07-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKEX | Expiry |