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Exponent masking, i.e. key masking
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CPC
G06F2207/7242
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PHYSICS
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Computing
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ELECTRICAL DIGITAL DATA PROCESSING
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Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
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G06F2207/7242
Exponent masking, i.e. key masking
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Patents Grants
last 30 patents
Information
Patent Grant
Exponent splitting for cryptographic operations
Patent number
11,658,799
Issue date
May 23, 2023
CRYPTOGRAPHY RESEARCH, INC.
Michael Tunstall
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Exponent splitting for cryptographic operations
Patent number
11,032,060
Issue date
Jun 8, 2021
CRYPTOGRAPHY RESEARCH, INC.
Michael Tunstall
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Encryption/description method protected against side-channel attacks
Patent number
10,862,669
Issue date
Dec 8, 2020
IDEMIA IDENTITY & SECURITY FRANCE
Houssem Maghrebi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Exponent splitting for cryptographic operations
Patent number
10,389,520
Issue date
Aug 20, 2019
Cryptography Research, Inc.
Michael Tunstall
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Computing a secure elliptic curve scalar multiplication using an un...
Patent number
10,361,855
Issue date
Jul 23, 2019
NXP B.V.
Joppe Willem Bos
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Protection of a modular calculation
Patent number
10,354,063
Issue date
Jul 16, 2019
STMicroelectronics (Rousset) SAS
Ibrahima Diop
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Cryptographic processing device and cryptographic processing method
Patent number
8,891,759
Issue date
Nov 18, 2014
Fujitsu Limited
Kouichi Itoh
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
System and method for secure transaction of data between wireless c...
Patent number
8,842,833
Issue date
Sep 23, 2014
TATA Consultancy Services Limited
Vijayarangan Natarajan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for minimizing differential power attacks on p...
Patent number
8,666,063
Issue date
Mar 4, 2014
Certicom.Corp.
Farhad Pezeshki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for minimizing differential power attacks on p...
Patent number
8,666,070
Issue date
Mar 4, 2014
Certicom.Corp.
Farhad Pezeshki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for minimizing differential power attacks on p...
Patent number
8,660,264
Issue date
Feb 25, 2014
Certicom Corp.
Farhad Pezeshki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Cryptographic processing method, computer readable storage medium,...
Patent number
8,638,927
Issue date
Jan 28, 2014
Fujitsu Limited
Masahiko Takenaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Operation unit and program
Patent number
8,631,249
Issue date
Jan 14, 2014
Kabushiki Kaisha Toshiba
Masanobu Koike
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for performing elliptic curve scalar multiplic...
Patent number
8,615,080
Issue date
Dec 24, 2013
BlackBerry Limited
Nevine Maurice Nassif Ebeid
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for minimizing differential power attacks on p...
Patent number
8,542,821
Issue date
Sep 24, 2013
Certicom Corp.
Farhad Pezeshki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for minimizing differential power attacks on p...
Patent number
8,542,826
Issue date
Sep 24, 2013
Certicom Corp.
Farhad Pezeshki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Combining interleaving with fixed-sequence windowing in an elliptic...
Patent number
8,391,479
Issue date
Mar 5, 2013
Research In Motion Limited
Nevine Maurice Nassif Ebeid
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Methods and apparatus for performing an elliptic curve scalar multi...
Patent number
8,379,844
Issue date
Feb 19, 2013
Research In Motion Limited
Nevine Maurice Nassif Ebeid
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Decryption processor and decryption processing method
Patent number
8,280,042
Issue date
Oct 2, 2012
Fujitsu Limited
Kouichi Itoh
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for performing elliptic curve scalar multiplic...
Patent number
8,243,919
Issue date
Aug 14, 2012
Research In Motion Limited
Nevine Maurice Nassif Ebeid
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Methods and apparatus for performing an elliptic curve scalar multi...
Patent number
8,160,245
Issue date
Apr 17, 2012
Research In Motion Limited
Nevine Maurice Nassif Ebeid
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Data conversion apparatus and data conversion method
Patent number
7,949,807
Issue date
May 24, 2011
Mitsubishi Electric Corporation
Tsuneo Sato
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Altering the size of windows in public key cryptographic computations
Patent number
7,936,871
Issue date
May 3, 2011
Samsung Electronics Co., Ltd.
Onur Aciicmez
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Cryptographic system and method for encrypting input data
Patent number
7,903,811
Issue date
Mar 8, 2011
Samsung Electronics Co., Ltd.
Ihor Vasyltsov
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of securely implementing a cryptography algorithm of the RSA...
Patent number
7,860,242
Issue date
Dec 28, 2010
Gemalto SA
Karine Villegas
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Randomized sparse formats for efficient and secure computation on e...
Patent number
7,664,258
Issue date
Feb 16, 2010
Microsoft Corporation
Ramarathnam Venkatesan
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Portable data carrier provided with access protection by dividing u...
Patent number
7,447,913
Issue date
Nov 4, 2008
Giesecke & Devrient GmbH
Hermann Drexler
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Security system using RSA algorithm and method thereof
Patent number
7,421,074
Issue date
Sep 2, 2008
Samsung Electronics Co., Ltd.
Weon-il Jin
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method of securely implementing a cryptography algorithm of the RSA...
Patent number
7,359,508
Issue date
Apr 15, 2008
Gemplus
Karine Villegas
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Device and method for calculating a result of a modular exponentiation
Patent number
7,248,700
Issue date
Jul 24, 2007
Infineon Technologies AG
Jean-Pierre Seifert
G06 - COMPUTING CALCULATING COUNTING
Patents Applications
last 30 patents
Information
Patent Application
EXPONENT SPLITTING FOR CRYPTOGRAPHIC OPERATIONS
Publication number
20210391975
Publication date
Dec 16, 2021
CRYPTOGRAPHY RESEARCH, INC.
Michael Tunstall
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
EXPONENT SPLITTING FOR CRYPTOGRAPHIC OPERATIONS
Publication number
20200076569
Publication date
Mar 5, 2020
Cryptography Research, Inc.
Michael Tunstall
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
MINIMIZING INFORMATION LEAKAGE DURING MODULAR EXPONENTIATION AND EL...
Publication number
20190238310
Publication date
Aug 1, 2019
The Athena Group, Inc.
Stuart Audley
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
ENCRYPTION/DESCRIPTION METHOD PROTECTED AGAINST SIDE-CHANNEL ATTACKS
Publication number
20180083769
Publication date
Mar 22, 2018
Safran Identity & Security
Houssem MAGHREBI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SEMICONDUCTOR DEVICE AND IC CARD
Publication number
20130182839
Publication date
Jul 18, 2013
RENESAS ELECTRONICS CORPORATION
Camille VUILLAUME
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
METHOD AND APPARATUS FOR MINIMIZING DIFFERENTIAL POWER ATTACKS ON P...
Publication number
20130101112
Publication date
Apr 25, 2013
Farhad Pezeshki
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
CRYPTOGRAPHIC PROCESSING DEVICE AND CRYPTOGRAPHIC PROCESSING METHOD
Publication number
20130039486
Publication date
Feb 14, 2013
Fujitsu Limited
Kouichi Itoh
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Method and Apparatus for Performing Elliptic Curve Scalar Multiplic...
Publication number
20120275594
Publication date
Nov 1, 2012
Research in Motion Limited
Nevine Maurice Nassif Ebeid
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Methods And Apparatus For Performing An Elliptic Curve Scalar Multi...
Publication number
20120114117
Publication date
May 10, 2012
Research in Motion Limited
Nevine Maurice Nassif Ebeid
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
OPERATION UNIT AND PROGRAM
Publication number
20120047417
Publication date
Feb 23, 2012
Kabushiki Kaisha Toshiba
Masanobu Koike
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SYSTEM AND METHOD FOR SECURE TRANSACTION OF DATA BETWEEN WIRELESS C...
Publication number
20120008775
Publication date
Jan 12, 2012
TATA CONSULTANCY SERVICES LIMITED
Vijayarangan Natarajan
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
CRYPTOGRAPHIC PROCESSING METHOD, COMPUTER READABLE STORAGE MEDIUM,...
Publication number
20110007894
Publication date
Jan 13, 2011
FUJITSU LIMITED
Masahiko TAKENAKA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
METHOD AND APPARATUS FOR MINIMIZING DIFFERENTIAL POWER ATTACKS ON P...
Publication number
20100278334
Publication date
Nov 4, 2010
CERTICOM CORP.
Farhad Pezeshki
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
DECRYPTION PROCESSOR AND DECRYPTION PROCESSING METHOD
Publication number
20100232603
Publication date
Sep 16, 2010
Fujitsu Limited
Kouichi Itoh
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
PRIVACY-PRESERVING SCALAR PRODUCT CALCULATION SYSTEM, PRIVACY-PRESE...
Publication number
20090279694
Publication date
Nov 12, 2009
Kenta TAKAHASHI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Masking and Additive Decomposition Techniques for Cryptographic Fie...
Publication number
20090016523
Publication date
Jan 15, 2009
ATMEL CORPORATION
Vincent Dupaquis
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
ALTERING THE SIZE OF WINDOWS IN PUBLIC KEY CRYPTOGRAPHIC COMPUTATIONS
Publication number
20090003607
Publication date
Jan 1, 2009
Samsung Electronics Co., Ltd.
Onur Aciicmez
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Data Conversion Apparatus and Data Conversion Method
Publication number
20080276106
Publication date
Nov 6, 2008
TOSOH CORPORTION
Tsuneo Sato
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Integer Division In A Manner That Counters A Power Analysis Attack
Publication number
20080275932
Publication date
Nov 6, 2008
Research In Motion Limited
Nevine Maurice Nassif Ebeid
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Combining Interleaving with Fixed-Sequence Windowing in an Elliptic...
Publication number
20080273694
Publication date
Nov 6, 2008
Nevine Maurice Nassif Ebeid
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Method and Apparatus for Performing Elliptic Curve Scalar Multiplic...
Publication number
20080219437
Publication date
Sep 11, 2008
Nevine Maurice Nassif Ebeid
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Methods And Apparatus For Performing An Elliptic Curve Scalar Multi...
Publication number
20080219450
Publication date
Sep 11, 2008
Nevine Maurice Nassif Ebeid
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Method of securely implementing a cryptography algorithm of the RSA...
Publication number
20080144814
Publication date
Jun 19, 2008
GEMPLUS
Karine Villegas
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Cryptographic system and method for encrypting input data
Publication number
20080044010
Publication date
Feb 21, 2008
Ihor Vasyltasov
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Randomized Sparse Formats for Efficient and Secure Computation on E...
Publication number
20070189511
Publication date
Aug 16, 2007
Microsoft Corporation
Ramarathnam Venkatesan
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Method and apparatus for minimizing differential power attacks on p...
Publication number
20070053509
Publication date
Mar 8, 2007
Farhad Pezeshki
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Method for the secure application of a cryptographic algorithm of t...
Publication number
20060210066
Publication date
Sep 21, 2006
GEMPLUS
Karine Villegas
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Security system using RSA algorithm and method thereof
Publication number
20050078821
Publication date
Apr 14, 2005
Samsung Electronics Co., Ltd.
Weon-il Jin
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Device and method for calculating a result of a modular exponentiation
Publication number
20040215685
Publication date
Oct 28, 2004
Infineon Technologies AG
Jean-Pierre Seifert
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Secure method for performing a modular exponentiation operation
Publication number
20040184604
Publication date
Sep 23, 2004
Marc Joye
G06 - COMPUTING CALCULATING COUNTING