US Patent No: 6,047,242

Number of patents in Portfolio can not be more than 2000

Computer system for protecting software and a method for protecting software

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ATTORNEY / AGENT: (SPONSORED)
 

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Abstract

A method for protecting an item of software, wherein at least one first challenge means is associated with said protected item of software, and at least one first response means accesses one private keying material. At least a third means (either challenge or response also exists). The first challenge means has no access to the said private keying material. The first response means proves to the first challenge means that the first response means has access to the private keying material. The first challenge means validates this proof using the public keying material that corresponds to the first response means' private keying material.

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First Claim

Related Publications

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Patent Owner(s)

Patent OwnerAddressTotal Patents
FUJITSU SIEMENS COMPUTERS GMBHMUNICH129

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Benson, Glenn Newton, MA 7 272

Cited Art

Patent Info (Count) # Cites Year
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
5,937,066 Two-phase cryptographic key recovery system 136 1996
 
INTERNATIONAL COMPUTERS LIMITED (1)
5,935,246 Electronic copy protection mechanism using challenge and response to prevent unauthorized execution of software 43 1997
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
5,940,516 Data security method and system 12 1996
 
WALKER ASSET MANAGEMENT LTD. PARTNERSHIP (1)
5,923,763 Method and apparatus for secure document timestamping 119 1996

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
MICROSOFT CORPORATION (26)
8,046,832 Spam detector with challenges 5 2002
7,757,075 State reference 1 2002
7,249,162 Adaptive junk message filtering system 40 2003
7,219,148 Feedback loop for spam prevention 67 2003
7,483,947 Message rendering for identification of content features 7 2003
7,272,853 Origination/destination features and lists for spam prevention 68 2003
7,711,779 Prevention of outgoing spam 12 2003
7,519,668 Obfuscation of spam filter 4 2003
7,543,053 Intelligent quarantining for spam prevention 4 2004
8,214,438 (More) advanced spam detection features 0 2004
7,464,264 Training filters for detecting spasm based on IP addresses and text-related features 25 2004
7,409,708 Advanced URL and IP features 24 2004
7,664,819 Incremental anti-spam lookup and update service 4 2004
7,904,517 Challenge response systems 3 2004
7,660,865 Spam filtering with probabilistic secure hashes 3 2004
7,624,451 Binding a digital license to a portable or the like in a digital rights management (DMR) system and checking out/checking in the digital license to/from the portable device or the like 4 2005
7,930,353 Trees of classifiers for detecting email spam 5 2005
8,065,370 Proofs to filter spam 1 2005
7,788,181 Software licensing using certificate issued by authorized authority 4 2005
7,386,891 Binding a digital license to a portable device or the like in a digital rights management (DRM) system and checking out/checking in the digital license to/from the portable device or the like 6 2006
8,224,905 Spam filtration utilizing sender activity data 1 2006
7,665,131 Origination/destination features and lists for spam prevention 6 2007
7,558,832 Feedback loop for spam prevention 2 2007
7,640,313 Adaptive junk message filtering system 3 2007
7,716,745 Binding a digital license to a portable device or the like in a digital rights management (DRM) system and checking out/checking in the digital license to/from the portable device or the like 0 2008
8,250,159 Message rendering for identification of content features 0 2009
 
AVAYA INC. (13)
7,885,896 Method for authorizing a substitute software license server 2 2002
8,041,642 Predictive software license balancing 0 2002
7,966,520 Software licensing for spare processors 0 2002
7,707,116 Flexible license file feature controls 1 2002
7,698,225 License modes in call processing 1 2002
7,681,245 Remote feature activator feature extraction 5 2002
7,890,997 Remote feature activation authentication file system 1 2003
7,707,405 Secure installation activation 7 2004
7,747,851 Certificate distribution via license files 2 2004
8,229,858 Generation of enterprise-wide licenses in a customer environment 2 2005
7,814,023 Secure download manager 5 2005
7,913,301 Remote feature activation authentication file system 0 2006
7,844,572 Remote feature activator feature extraction 3 2007
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (3)
6,574,612 License management system 83 1999
7,130,829 Digital rights management 8 2001
7,549,166 Defense mechanism for server farm 5 2002
 
SPYRUS, INC. (3)
6,816,965 Method and system for a policy enforcing module 7 1999
6,904,523 Method and system for enforcing access to a computing resource using a licensing attribute certificate 22 2002
7,356,692 Method and system for enforcing access to a computing resource using a licensing attribute certificate 15 2005
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (2)
7,257,554 Anonymous purchases while allowing verifiable identities for refunds returned along the paths taken to make the purchases 0 1999
7,685,125 Proving relationships between data 0 2005
 
INTERTRUST TECHNOLOGIES CORP. (2)
7,243,236 Systems and methods for using cryptography to protect secure and insecure computing environments 16 2000
7,689,827 Systems and methods for using cryptography to protect secure and insecure computing environments 1 2007
 
ACTIVIDENTITY, INC. (1)
7,526,654 Method and system for detecting a secure state of a computer system 14 2001
 
APPLE INC. (1)
8,412,938 Zero-knowledge based authentication method, system, and apparatus 0 2009
 
AVASOL, THOMAS EVALD (1)
7,716,474 Anti-piracy software protection system and method 0 2004
 
BANNER NO. 155 GMBH, LLC (1)
6,301,660 Computer system for protecting a file and a method for protecting a file 146 1998
 
COMPAQ INFORMATION TECHNOLOGIES GROUP, L.P. (1)
6,424,953 Encrypting secrets in a file for an electronic micro-commerce system 2 1999
 
ENTRUST TECHNOLOGIES LIMITED (1)
6,470,450 Method and apparatus for controlling application access to limited access based data 40 1998
 
FELSHER, DAVID P., MR. (1)
7,181,017 System and method for secure three-party communications 226 2002
 
FLOWCHARGE, INC. (1)
8,122,119 Non-resident metering and billing system for applications and devices 0 2002
 
FUJI XEROX CO., LTD. (1)
6,567,916 Method and device for authentication 11 1999
 
FUJITSU LIMITED (1)
6,345,360 Apparatus method and computer readable storage medium with recorded program for managing files with alteration preventing/detecting functions 9 1998
 
FUJITSU SIEMENS COMPUTERS GMBH (1)
6,678,665 Computer system for protecting software and a method for protecting software 8 1997
 
KENT RIDGE DIGITAL LABS (1)
7,171,559 Method of exchanging digital data 4 1998
 
LUMENSION SECURITY, INC. (1)
7,711,952 Method and system for license management 1 2005
 
MICHTCHENKO, VALENTIN A. (1)
7,809,134 Method for encrypting information and device for realization of the method 0 2007
 
NOKIA CORPORATION (1)
6,988,204 System and method for key distribution and network connectivity 3 2002
 
OMTOOL, LTD. (1)
7,082,538 Electronically verified digital signature and document delivery system and method 11 2001
 
PRIAXESS SOFTWARE, LLC (1)
6,173,446 Apparatus for licensing software applications 41 1999
 
SINGLESIGON. NET INC. (1)
6,883,095 System and method for password throttling 44 2000
 
THOMSON LICENSING (1)
7,832,002 Secure electric anti-theft device, anti-theft system comprising one such electric device and method of matching electric devices 0 2003
 
UNILOC LUXEMBOURG S. A. (1)
6,857,067 System and method for preventing unauthorized access to electronic data 37 2001
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (2)
6,587,842 Software-based protection system for software products distributed on copyable media, or downloaded over a communications link 17 1999
7,587,368 Information record infrastructure, system and method 41 2001