MY137182A - Control of access to a memory by a device - Google Patents

Control of access to a memory by a device

Info

Publication number
MY137182A
MY137182A MYPI20034401A MY137182A MY 137182 A MY137182 A MY 137182A MY PI20034401 A MYPI20034401 A MY PI20034401A MY 137182 A MY137182 A MY 137182A
Authority
MY
Malaysia
Prior art keywords
memory
secure
data
access
processing apparatus
Prior art date
Application number
Inventor
Simon Charles Watt
Lionel Belnet
David Hennah Mansell
Nicolas Chaussade
Peter Guy Middleton
Original Assignee
Advanced Risc Mach Ltd
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 GB0226875A external-priority patent/GB0226875D0/en
Priority claimed from GB0226879A external-priority patent/GB0226879D0/en
Priority claimed from GB0303446A external-priority patent/GB0303446D0/en
Application filed by Advanced Risc Mach Ltd filed Critical Advanced Risc Mach Ltd
Publication of MY137182A publication Critical patent/MY137182A/en

Links

Landscapes

  • Storage Device Security (AREA)

Abstract

THE PRESENT INVENTION PROVIDES A DATA PROCESSING APPARATUS AND METHOD FOR CONTROLLING ACCESS TO A MEMORY . THE DATA PROCESSING APPARATUS HAS A SECURE DOMAIN AND A NON-SECURE DOMAIN, IN THE SECURE DOMAIN THE DATA PROCESSING APPARATUS HAVING ACCESS TO SECURE DATA WHICH IS NOT ACCESSIBLE IN THE NON-SECURE DOMAIN. THE DATA PROCESSING APPARATUS COMPRISES A DEVICE COUPLED TO A MEMORY VIA A DEVICE BUS,AND OPERABLE, WHEN AN ITEM OF DATA IN THE MEMORY IS REQUIRED BY THE DEVICE, TO ISSUE ONTO THE DEVICE BUS A MEMORY ACCESS REQUEST PERTAINING TO EITHER THE SECURE DOMAIN OR THE NON-SECURE DOMAIN. THE MEMORY IS OPERABLE TO STORE DATA REQUIRED BY THE DEVICE, AND CONTAINS SECURE MEMORY FOR STORING SECURE DATA AND NON-SECURE MEMORY FOR STORING NON-SECURE DATA.IN ACCORDANCE WITH THE PRESENT INVENTION, THE DATA PROCESSING APPARATUS FURTHER COMPRISES PARTITION CHECKING LOGIC COUPLED TO THE DEVICE BUS AND OPERABLE WHENEVER THE MEMORY ACCESS REQUEST AS ISSUED BY THE DEVICE PERTAINS TO THE NON-SECURE DOMAIN, TO DETECT IF THE MEMORY ACCESS REQUEST IS SEEKING TO ACCESS THE SECURE MEMORY AND UPON SUCH DETECTION TO PREVENT THE ACCESS SPECIFIED BY THAT MEMORY REQUEST. THIS APPROACH SIGNIFICANTLY IMPROVES THE SECURITY OF DATA CONTAINED WITHIN A SECURE PORTION OF MEMORY.
MYPI20034401 2002-11-18 2003-11-17 Control of access to a memory by a device MY137182A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0226875A GB0226875D0 (en) 2002-11-18 2002-11-18 Control of access to a memory by a device
GB0226879A GB0226879D0 (en) 2002-11-18 2002-11-18 Apparatus and method for controlling access to a memory
GB0303446A GB0303446D0 (en) 2002-11-18 2003-02-14 Apparatus and method for controlling access to a memory

Publications (1)

Publication Number Publication Date
MY137182A true MY137182A (en) 2009-01-30

Family

ID=35873167

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI20034401 MY137182A (en) 2002-11-18 2003-11-17 Control of access to a memory by a device

Country Status (4)

Country Link
IL (1) IL168336A (en)
MY (1) MY137182A (en)
RU (1) RU2005115088A (en)
TW (1) TWI312253B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7673345B2 (en) 2005-03-31 2010-03-02 Intel Corporation Providing extended memory protection
GB2442023B (en) * 2006-09-13 2011-03-02 Advanced Risc Mach Ltd Memory access security management
US9021590B2 (en) * 2007-02-28 2015-04-28 Microsoft Technology Licensing, Llc Spyware detection mechanism
US8861434B2 (en) * 2010-11-29 2014-10-14 Alcatel Lucent Method and system for improved multi-cell support on a single modem board
US9141559B2 (en) 2012-01-04 2015-09-22 Intel Corporation Increasing virtual-memory efficiencies
EP2801025B1 (en) * 2012-01-04 2018-10-24 Intel Corporation Increasing virtual-memory efficiencies

Also Published As

Publication number Publication date
RU2005115088A (en) 2006-01-20
TW200417216A (en) 2004-09-01
TWI312253B (en) 2009-07-11
IL168336A (en) 2010-04-29

Similar Documents

Publication Publication Date Title
WO2004046934A3 (en) Secure memory for protecting against malicious programs
WO2002006930A3 (en) Identifying unauthorized communication systems based on their memory contents
EE200400053A (en) Method and system for processing data in an electronic device, electronic device and processing unit
AU2003287947A8 (en) Methods and systems for moving data objects using locks
WO2004099947A3 (en) Memory protection systems and methods for writable memory
MY146182A (en) Memory access security management
WO2005029249A8 (en) Secure network system and associated method of use
WO2007130386A3 (en) Method and apparatus for secure context switching in a system including a processor and cached virtual memory
CA2418758A1 (en) Interactive and/or secure activation of a tool
BR9911409A (en) Virtual system for data storage (vds)
GB0300691D0 (en) Secure cpu and memory management unit with cryptographic extensions
WO2008005733A3 (en) Systems and methods for multi-user access to a wireless storage device
BR0005192A (en) Data processing apparatus, terminal unit having a fixable / detachable non-volatile recording medium, and data processing processes, and transmission of a data processing apparatus
TW200731108A (en) Secure yet flexible system architecture for secure devices with flash mass storage memory
GB2443984B (en) Methods and apparatus for the secure handling of data in a microcontroller
EP1128598A4 (en) SYSTEM, DEVICE, METHOD AND PROGRAM SUPPORT FOR CONTENT MANAGEMENT
MXPA05007150A (en) Policy engine and methods and systems for protecting data.
ATE509317T1 (en) METHOD AND DEVICE FOR PROVIDING INDEPENDENT LOGICAL ADDRESS SPACE AND ACCESS MANAGEMENT
WO2004053698A3 (en) Improved tlb management for real-time applications
MY138723A (en) Implementation of memory access control using optimizations
WO2009023586A3 (en) Storing custom metadata using custom access control entries
GB2391095A (en) Method and apparatus for improving reliability of write back cache information
TW200708952A (en) Providing extended memory protection
TW200617798A (en) Memory storage device having finger print sensing and data protection method thereof
WO2007033321A3 (en) Secure yet flexible system architecture for secure devices with flash mass storage memory