WO2001079969A3 - Tamper resistant software - Google Patents

Tamper resistant software Download PDF

Info

Publication number
WO2001079969A3
WO2001079969A3 PCT/CA2001/000493 CA0100493W WO0179969A3 WO 2001079969 A3 WO2001079969 A3 WO 2001079969A3 CA 0100493 W CA0100493 W CA 0100493W WO 0179969 A3 WO0179969 A3 WO 0179969A3
Authority
WO
WIPO (PCT)
Prior art keywords
data
data structures
memory
mapping
stored
Prior art date
Application number
PCT/CA2001/000493
Other languages
French (fr)
Other versions
WO2001079969A2 (en
Inventor
Harold J Johnson
Stanley T Chow
Yuan Gu
Original Assignee
Cloakware Corp
Harold J Johnson
Stanley T Chow
Yuan Gu
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
Application filed by Cloakware Corp, Harold J Johnson, Stanley T Chow, Yuan Gu filed Critical Cloakware Corp
Priority to EP01921074A priority Critical patent/EP1309905A2/en
Priority to CA002405742A priority patent/CA2405742A1/en
Priority to US10/257,333 priority patent/US7350085B2/en
Priority to AU48189/01A priority patent/AU4818901A/en
Priority to CA002351868A priority patent/CA2351868A1/en
Publication of WO2001079969A2 publication Critical patent/WO2001079969A2/en
Publication of WO2001079969A3 publication Critical patent/WO2001079969A3/en

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
    • G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
    • G06F21/79—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data in semiconductor storage media, e.g. directly-addressable memories
    • 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
    • G06F12/1408—Protection against unauthorised use of memory or access to memory by using cryptography
    • 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
    • G06F21/14—Protecting executable software against software analysis or reverse engineering, e.g. by obfuscation
    • 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
    • G06F21/60—Protecting data
    • G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules

Abstract

Mass data (the contents of arrays, large data structures, linked data structures and similar data structures stored in memory) are common targets for attack. The invention presents a method and system of protecting mass data by mapping virtual addresses onto randomly or pseudo-randomly selected actual addresses. This mapping distributes data values throughout the memory so an attacker cannot locate the data he is seeking, or identify patterns which might allow him to obtain information about his target (such as how the software operates, encryption keys, biometric data or passwords stored therein, or algorithms it uses). Additional layers of protection are described, as well as efficient techniques for generating the necessary transforms to perform the invention.
PCT/CA2001/000493 2000-04-12 2001-04-12 Tamper resistant software WO2001079969A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP01921074A EP1309905A2 (en) 2000-04-12 2001-04-12 Tamper resistant software
CA002405742A CA2405742A1 (en) 2000-04-12 2001-04-12 Tamper resistant software - mass data encoding
US10/257,333 US7350085B2 (en) 2000-04-12 2001-04-12 Tamper resistant software-mass data encoding
AU48189/01A AU4818901A (en) 2000-04-12 2001-04-12 Tamper resistant software - mass data encoding
CA002351868A CA2351868A1 (en) 2001-04-12 2001-06-28 Secure method and system for biometric verification

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2,305,078 2000-04-12
CA002305078A CA2305078A1 (en) 2000-04-12 2000-04-12 Tamper resistant software - mass data encoding

Publications (2)

Publication Number Publication Date
WO2001079969A2 WO2001079969A2 (en) 2001-10-25
WO2001079969A3 true WO2001079969A3 (en) 2003-03-13

Family

ID=4165877

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2001/000493 WO2001079969A2 (en) 2000-04-12 2001-04-12 Tamper resistant software

Country Status (5)

Country Link
US (1) US7350085B2 (en)
EP (1) EP1309905A2 (en)
AU (1) AU4818901A (en)
CA (1) CA2305078A1 (en)
WO (1) WO2001079969A2 (en)

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Also Published As

Publication number Publication date
WO2001079969A2 (en) 2001-10-25
US20030163718A1 (en) 2003-08-28
EP1309905A2 (en) 2003-05-14
US7350085B2 (en) 2008-03-25
AU4818901A (en) 2001-10-30
CA2305078A1 (en) 2001-10-12

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