WO2004070510A3 - Device and method of manipulating masked data - Google Patents

Device and method of manipulating masked data

Info

Publication number
WO2004070510A3
WO2004070510A3 PCT/IL2004/000116 IL2004000116W WO2004070510A3 WO 2004070510 A3 WO2004070510 A3 WO 2004070510A3 IL 2004000116 W IL2004000116 W IL 2004000116W WO 2004070510 A3 WO2004070510 A3 WO 2004070510A3
Authority
WO
Grant status
Application
Patent type
Prior art keywords
data
manipulating
masked
converted
method
Prior art date
Application number
PCT/IL2004/000116
Other languages
French (fr)
Other versions
WO2004070510A2 (en )
Inventor
Shay Gueron
Ori Parzanchevski
Or Zuk
Original Assignee
Discretix Technologies Ltd
Shay Gueron
Ori Parzanchevski
Or Zuk
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

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00Methods or arrangements for processing data by operating upon the order or content of the data handled
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/60Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers
    • G06F7/72Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers using residue arithmetic
    • G06F7/724Finite field arithmetic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communication
    • H04L9/002Countermeasures against attacks on cryptographic mechanisms
    • H04L9/003Countermeasures against attacks on cryptographic mechanisms for power analysis, e.g. differential power analysis [DPA] or simple power analysis [SPA]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communication
    • H04L9/06Cryptographic mechanisms or cryptographic arrangements for secret or secure communication the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/0618Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
    • H04L9/0631Substitution permutation network [SPN], i.e. cipher composed of a number of stages or rounds each involving linear and nonlinear transformations, e.g. AES algorithms
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/72Indexing scheme relating to groups G06F7/72 - G06F7/729
    • G06F2207/7209Calculation via subfield, i.e. the subfield being GF(q) with q a prime power, e.g. GF ((2**m)**n) via GF(2**m)
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/72Indexing scheme relating to groups G06F7/72 - G06F7/729
    • G06F2207/7219Countermeasures against side channel or fault attacks
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/72Indexing scheme relating to groups G06F7/72 - G06F7/729
    • G06F2207/7219Countermeasures against side channel or fault attacks
    • G06F2207/7223Randomisation as countermeasure against side channel attacks
    • G06F2207/7233Masking, e.g. (A**e)+r mod n
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/04Masking or blinding
    • H04L2209/046Masking or blinding of operations, operands or results of the operations

Abstract

Embodiments of the invention provide a method and a device for manipulating data (108) by converting masked data in a first representation of a finite field into converted data in a second representation of the finite field (102), and manipulating the converted data (106) to obtain manipulated masked data.
PCT/IL2004/000116 2003-02-06 2004-02-05 Device and method of manipulating masked data WO2004070510A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US44524703 true 2003-02-06 2003-02-06
US60/445,247 2003-02-06

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20040708426 EP1595357A4 (en) 2003-02-06 2004-02-05 Device and method of manipulating masked data
JP2006502631A JP2006517036A (en) 2003-02-06 2004-02-05 Apparatus and method for operating the masked data

Publications (2)

Publication Number Publication Date
WO2004070510A2 true WO2004070510A2 (en) 2004-08-19
WO2004070510A3 true true WO2004070510A3 (en) 2004-10-21

Family

ID=32850978

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2004/000116 WO2004070510A3 (en) 2003-02-06 2004-02-05 Device and method of manipulating masked data

Country Status (3)

Country Link
EP (1) EP1595357A4 (en)
JP (1) JP2006517036A (en)
WO (1) WO2004070510A3 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2871969B1 (en) 2004-06-18 2006-12-01 Sagem Method and device execution of a cryptographic calculation
DE102005024609A1 (en) * 2005-05-25 2006-11-30 Siemens Ag Determining a modular inverse
JP4968443B2 (en) * 2006-01-31 2012-07-04 大日本印刷株式会社 Cryptographic processing method, and an encryption processing unit
US7995757B2 (en) * 2007-05-31 2011-08-09 Harris Corporation Closed galois field combination
DE102008033962B4 (en) 2008-07-21 2011-11-24 Siemens Aktiengesellschaft The method and processor means for implementing a characteristic-2-multiplication
JP5268609B2 (en) * 2008-12-09 2013-08-21 株式会社東芝 Cryptographic processing apparatus and operation method
US8504845B2 (en) 2011-03-30 2013-08-06 Apple Inc. Protecting states of a cryptographic process using group automorphisms

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6246768B1 (en) * 1998-05-06 2001-06-12 Penta Security Systems, Inc. Data encryption system for encrypting plaintext data
US20030053623A1 (en) * 2001-03-27 2003-03-20 Mccanny John Vincent Apparatus for selectably encrypting or decrypting data
US20030133568A1 (en) * 2001-12-18 2003-07-17 Yosef Stein Programmable data encryption engine for advanced encryption standard algorithm
US20040139340A1 (en) * 2000-12-08 2004-07-15 Johnson Harold J System and method for protecting computer software from a white box attack

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6246768B1 (en) * 1998-05-06 2001-06-12 Penta Security Systems, Inc. Data encryption system for encrypting plaintext data
US20040139340A1 (en) * 2000-12-08 2004-07-15 Johnson Harold J System and method for protecting computer software from a white box attack
US20030053623A1 (en) * 2001-03-27 2003-03-20 Mccanny John Vincent Apparatus for selectably encrypting or decrypting data
US20030133568A1 (en) * 2001-12-18 2003-07-17 Yosef Stein Programmable data encryption engine for advanced encryption standard algorithm

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
JUTLA ET AL.: 'On the circuit complexity of isomorphic galois field transformations' IBM RESEARCH REPORT 22 November 2002, *
See also references of EP1595357A2 *
XIAO L. & HEYS H.M.: 'Hardware design and analysis of block cipher components' ICISC 2002, [Online] 28 November 2002, Retrieved from the Internet: <URL:http://www.engr.mun.ca/~howard/PAPERS/ icisc2002.pdf> *

Also Published As

Publication number Publication date Type
WO2004070510A2 (en) 2004-08-19 application
EP1595357A4 (en) 2006-03-01 application
EP1595357A2 (en) 2005-11-16 application
JP2006517036A (en) 2006-07-13 application

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