GB2396229B - Processing activity masking in a data processing system - Google Patents

Processing activity masking in a data processing system

Info

Publication number
GB2396229B
GB2396229B GB0307823A GB0307823A GB2396229B GB 2396229 B GB2396229 B GB 2396229B GB 0307823 A GB0307823 A GB 0307823A GB 0307823 A GB0307823 A GB 0307823A GB 2396229 B GB2396229 B GB 2396229B
Authority
GB
United Kingdom
Prior art keywords
data processing
processing system
activity masking
masking
processing
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
GB0307823A
Other versions
GB2396229A (en
GB0307823D0 (en
Inventor
Christophe Justin Evrard
Julie-Anne Francoise M Pruvost
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.)
ARM Ltd
Original Assignee
ARM Ltd
Advanced Risc Machines 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 GBGB0229068.2A external-priority patent/GB0229068D0/en
Application filed by ARM Ltd, Advanced Risc Machines Ltd filed Critical ARM Ltd
Publication of GB0307823D0 publication Critical patent/GB0307823D0/en
Priority to JP2005502327A priority Critical patent/JP4619288B2/en
Priority to GB0501017A priority patent/GB2406684B/en
Priority to PCT/GB2003/004304 priority patent/WO2004053685A1/en
Priority to JP2005502329A priority patent/JP2006510998A/en
Priority to PCT/GB2003/004313 priority patent/WO2004053684A2/en
Priority to JP2005502326A priority patent/JP4511461B2/en
Priority to JP2005502328A priority patent/JP3848965B2/en
Priority to US10/527,812 priority patent/US20060117167A1/en
Priority to US10/527,575 priority patent/US7313677B2/en
Priority to US10/527,960 priority patent/US7426629B2/en
Priority to GB0502061A priority patent/GB2406943B/en
Priority to US10/512,093 priority patent/US7134003B2/en
Priority to PCT/GB2003/004261 priority patent/WO2004053662A2/en
Priority to GB0423310A priority patent/GB2403572B/en
Priority to PCT/GB2003/004256 priority patent/WO2004053683A2/en
Publication of GB2396229A publication Critical patent/GB2396229A/en
Publication of GB2396229B publication Critical patent/GB2396229B/en
Application granted granted Critical
Priority to JP2010185224A priority patent/JP2010282651A/en
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
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/30098—Register arrangements
    • G06F9/30101—Special purpose registers
    • 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
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/71—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
    • G06F21/75—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information by inhibiting the analysis of circuitry or operation
    • G06F21/755—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information by inhibiting the analysis of circuitry or operation with measures against power attack
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/38—Concurrent instruction execution, e.g. pipeline or look ahead
    • G06F9/3824—Operand accessing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/38—Concurrent instruction execution, e.g. pipeline or look ahead
    • G06F9/3836—Instruction issuing, e.g. dynamic instruction scheduling or out of order instruction execution
    • G06F9/3842—Speculative instruction execution
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/72—Indexing scheme relating to groups G06F7/72 - G06F7/729
    • G06F2207/7219—Countermeasures against side channel or fault attacks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/2123—Dummy operation

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Computer Security & Cryptography (AREA)
  • Executing Machine-Instructions (AREA)
GB0307823A 2002-12-12 2003-04-04 Processing activity masking in a data processing system Expired - Lifetime GB2396229B (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
PCT/GB2003/004256 WO2004053683A2 (en) 2002-12-12 2003-10-06 Processing activity masking in a data processing system
JP2005502329A JP2006510998A (en) 2002-12-12 2003-10-06 Masking processing activity in a data processing system
US10/512,093 US7134003B2 (en) 2002-12-12 2003-10-06 Variable cycle instruction execution in variable or maximum fixed cycle mode to disguise execution path
PCT/GB2003/004304 WO2004053685A1 (en) 2002-12-12 2003-10-06 Instruction timing control within a data processing system
JP2005502327A JP4619288B2 (en) 2002-12-12 2003-10-06 Processing action masking in data processing system
PCT/GB2003/004313 WO2004053684A2 (en) 2002-12-12 2003-10-06 Processing activity masking in a data processing system
JP2005502326A JP4511461B2 (en) 2002-12-12 2003-10-06 Processing action masking in data processing system
JP2005502328A JP3848965B2 (en) 2002-12-12 2003-10-06 Instruction timing control in data processor
US10/527,812 US20060117167A1 (en) 2002-12-12 2003-10-06 Processing activity masking in a data processing system
US10/527,575 US7313677B2 (en) 2002-12-12 2003-10-06 Processing activity masking in a data processing system
US10/527,960 US7426629B2 (en) 2002-12-12 2003-10-06 Processing activity masking in a data processing system
GB0502061A GB2406943B (en) 2002-12-12 2003-10-06 Processing activity masking in a data processing system
GB0501017A GB2406684B (en) 2002-12-12 2003-10-06 Processing activity masking in a data processing system
PCT/GB2003/004261 WO2004053662A2 (en) 2002-12-12 2003-10-06 Processing activity masking in a data processing system
GB0423310A GB2403572B (en) 2002-12-12 2003-10-06 Instruction timing control within a data processing system
JP2010185224A JP2010282651A (en) 2002-12-12 2010-08-20 Processing activity masking in data processing system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB0229068.2A GB0229068D0 (en) 2002-12-12 2002-12-12 Instruction timing control within a data processing system
GBGB0302646.5A GB0302646D0 (en) 2002-12-12 2003-02-05 Processing activity masking in a data processing system
GBGB0302650.7A GB0302650D0 (en) 2002-12-12 2003-02-05 Processing activity masking in a data processing system

Publications (3)

Publication Number Publication Date
GB0307823D0 GB0307823D0 (en) 2003-05-07
GB2396229A GB2396229A (en) 2004-06-16
GB2396229B true GB2396229B (en) 2006-01-11

Family

ID=27256425

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0307822.7A Ceased GB0307822D0 (en) 2002-12-12 2003-04-04 Processing activity masking in a data processing system
GB0307823A Expired - Lifetime GB2396229B (en) 2002-12-12 2003-04-04 Processing activity masking in a data processing system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0307822.7A Ceased GB0307822D0 (en) 2002-12-12 2003-04-04 Processing activity masking in a data processing system

Country Status (1)

Country Link
GB (2) GB0307822D0 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0405726A2 (en) * 1989-05-04 1991-01-02 Texas Instruments Incorporated Context switching system
US5812868A (en) * 1996-09-16 1998-09-22 Motorola Inc. Method and apparatus for selecting a register file in a data processing system
EP1158384A1 (en) * 2000-05-22 2001-11-28 Infineon Technologies AG Security data processing unit and method therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0405726A2 (en) * 1989-05-04 1991-01-02 Texas Instruments Incorporated Context switching system
US5812868A (en) * 1996-09-16 1998-09-22 Motorola Inc. Method and apparatus for selecting a register file in a data processing system
EP1158384A1 (en) * 2000-05-22 2001-11-28 Infineon Technologies AG Security data processing unit and method therefor
US20030110390A1 (en) * 2000-05-22 2003-06-12 Christian May Secure data processing unit, and an associated method

Also Published As

Publication number Publication date
GB0307822D0 (en) 2003-05-07
GB2396229A (en) 2004-06-16
GB0307823D0 (en) 2003-05-07

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20230403