US Patent No: 7,930,756

Number of patents in Portfolio can not be more than 2000

Multi-level cryptographic transformations for securing digital assets

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Abstract

Enhanced multi-level cryptographic transformations that secure electronic files are disclosed. The secured electronic files contain not only secured data but also security information. The security information includes cryptographic structure information, access rules and secrets (e.g., keys). The cryptographic structure information explains the multi-level cryptographic transformations associated with securing or unsecuring the electronic files. The access rules and the secrets are used by the cryptographic transformations to secure the electronic files. Since the secured electronic files contain the cryptographic structure information, the particular cryptographic transformations (including their sequencing) can vary with each electronic file, if so desired. Typically, the secured electronic files are secured and managed by a file security system, such as a distributed security system.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
GUARDIAN DATA STORAGE, LLCWILMINGTON, DE40

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Crocker, Steven Toye Redwood City, CA 4 147
Garcia, Denis Jacques Paul Palo Alto, CA 15 244

Cited Art

Patent Info (Count) # Cites Year
 
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GUARDIAN DATA STORAGE, LLC (32)
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HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (16)
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EMC CORPORATION (13)
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ENTRUST TECHNOLOGIES LIMITED (9)
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INTEL CORPORATION (9)
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ORACLE INTERNATIONAL CORPORATION (9)
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TECSEC, INCORPORATED (9)
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KABUSHIKI KAISHA TOSHIBA (5)
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5,892,900 Systems and methods for secure transaction management and electronic rights protection 1518 1996
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NEC CORPORATION (4)
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MITSUBISHI DENKI KABUSHIKI KAISHA (3)
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SAP AG (3)
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SILICON VALLEY BANK (3)
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XEROX CORPORATION (3)
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ALCATEL (2)
6,678,835 State transition protocol for high availability units 115 2000
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ALEARO PROPERTIES LIMITED LIABILITY COMPANY (2)
7,281,272 Method and system for copyright protection of digital images 32 1999
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AT&T CORP. (2)
6,996,718 System and method for providing access to multiple user accounts via a common password 49 2000
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5,715,403 System for controlling the distribution and use of digital works having attached usage rights where the usage rights are defined by a usage rights grammar 815 1994
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ENTRUST LIMITED (2)
5,850,443 Key management system for mixed-trust environments 112 1996
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FUJI XEROX CO., LTD. (2)
6,530,020 Group oriented public key encryption and key management system 60 1998
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JDA SOFTWARE GROUP, INC (2)
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JPMORGAN CHASE BANK, N.A. (2)
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LEVEL 3 COMMUNICATIONS, LLC (2)
6,226,618 Electronic content delivery system 895 1998
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NOKIA MOBILE PHONES LTD. (2)
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PALO ALTO RESEARCH CENTER INCORPORATED (2)
2004/0088,548 System and method for providing secure resource management 59 2002
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RICOH COMPANY, LTD. (2)
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2002/0172,367 System for secure electronic information transmission 71 2002
 
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6,922,785 Apparatus and a method for secure communications for network computers 22 2000
 
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6,683,954 Key encryption using a client-unique additional key for fraud prevention 49 1999
 
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2003/0023,559 Method for securing digital information and system therefor 39 2001
 
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6,611,846 Method and system for medical patient data analysis 127 1999
 
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7,265,764 System and method for providing a hardware icon with magnification and security 33 2002
 
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6,952,780 System and method for ensuring secure transfer of a document from a client of a network to a printer 67 2001
 
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6,915,425 System for permitting off-line playback of digital content, and for managing content rights 38 2000
 
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2003/0217,264 System and method for providing a secure environment during the use of electronic documents and data 48 2002
 
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OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (18)
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5,619,576 Variable-key cryptography system 32 1995
5,748,736 System and method for secure group communications via multicast or broadcast 198 1996
5,790,789 Method and architecture for the creation, control and deployment of services within a distributed computer environment 351 1996
6,226,745 Information sharing system and method with requester dependent sharing and security rules 133 1998
6,292,899 Volatile key apparatus for safeguarding confidential data stored in a computer system memory 60 1998
6,260,141 Software license control system based on independent software registration server 77 2000
6,990,441 Natural language messages from a keystroke output wedge 9 2000
2002/0133,699 Method and apparatus to regulate use of freely exchanged files and streams 39 2001
7,124,164 Method and apparatus for providing group interaction via communications networks 90 2001
2002/0003,886 Method and system for storing multiple media tracks in a single, multiply encrypted computer file 28 2001
2002/0010,679 Information record infrastructure, system and method 318 2001
2002/0050,098 Rotary access locking apparatus 35 2001
2003/0046,176 One page purchasing system 14 2001
2004/0205,576 System and method for managing Knowledge information 23 2002
2003/0037,253 Digital rights management system 36 2002
2004/0193,905 System and method for providing secure transmission, search, and storage of data 39 2004
2005/0273,600 Method and system for file data access within a secure environment 38 2005

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
GUARDIAN DATA STORAGE, LLC (4)
8,266,674 Method and system for implementing changes to security policies in a distributed security system 0 2009
8,327,138 Method and system for securing digital assets using process-driven security policies 0 2010
8,341,407 Method and system for protecting electronic data in enterprise environment 0 2011
8,341,406 System and method for providing different levels of key security for controlling access to secured items 0 2011
 
GEMALTO SA (1)
8,229,112 Decipherable searchable encryption method, system for such an encryption 0 2007

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Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00