GB0307822D0 - Processing activity masking in a data processing system - Google Patents

Processing activity masking in a data processing system

Info

Publication number
GB0307822D0
GB0307822D0 GBGB0307822.7A GB0307822A GB0307822D0 GB 0307822 D0 GB0307822 D0 GB 0307822D0 GB 0307822 A GB0307822 A GB 0307822A GB 0307822 D0 GB0307822 D0 GB 0307822D0
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.)
Ceased
Application number
GBGB0307822.7A
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 GB0307822D0 publication Critical patent/GB0307822D0/en
Ceased 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
    • G06F21/70—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
    • G06F9/30098—Register arrangements
    • G06F9/30101—Special purpose registers
    • 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)
GBGB0307822.7A 2002-12-12 2003-04-04 Processing activity masking in a data processing system Ceased GB0307822D0 (en)

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 (1)

Publication Number Publication Date
GB0307822D0 true GB0307822D0 (en) 2003-05-07

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 After (1)

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

Country Status (1)

Country Link
GB (2) GB0307822D0 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69034028T2 (en) * 1989-05-04 2003-10-09 Texas Instruments Inc., Dallas Method and system for determining min / max values
US5812868A (en) * 1996-09-16 1998-09-22 Motorola Inc. Method and apparatus for selecting a register file in a data processing system
EP1496420B1 (en) * 2000-05-22 2007-07-04 Infineon Technologies AG Security data processing unit and method therefor

Also Published As

Publication number Publication date
GB2396229B (en) 2006-01-11
GB2396229A (en) 2004-06-16
GB0307823D0 (en) 2003-05-07

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Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)