US Patent No: 5,737,419

Number of patents in Portfolio can not be more than 2000

Computer system for securing communications using split private key asymmetric cryptography

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ATTORNEY / AGENT: (SPONSORED)
 

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Abstract

A programmed computer secures communications between users of a crypto-system in which each user has an associated asymmetric crypto-key with a public key portion accessible to all system users and a corresponding private key portion having a first private key portion known only to the associated user and a corresponding second private key portion. The computer includes a processor programmed to generate a temporary asymmetric crypto-key having a first temporary key portion and an associated second temporary key portion. The computer then encrypts the second temporary key portion with the first private key portion of a first user crypto-key associated with a first user to form a first encrypted message. The processor directs the issuance of the first encrypted message to a second user having access to the second private key portion of the first user crypto-key. The processor next applies the public key portion of the first user crypto-key to decrypt a second encrypted message generated by the second user, which includes the first encrypted message encrypted with the second private key portion of the first user crypto-key, to thereby authenticate the second user to the first user. The computer also includes a storage medium for storing the first temporary key portion, and the public key portion of the first user crypto-key.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
BELL ATLANTIC NETWORK SERVICES, INC.ARLINGTON, VA126

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ganesan, Ravi Half Moon Bay, CA 102 1557

Cited Art

Patent Info (Count) # Cites Year
 
THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY (3)
4,200,770 Cryptographic apparatus and method 681 1977
4,218,582 Public key cryptographic apparatus and method 460 1977
4,424,414 Exponentiation cryptographic apparatus and method 299 1978
 
CROWLEY, JOHN J. (1)
5,375,169 Cryptographic key management method and apparatus 103 1993
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
4,736,423 Technique for reducing RSA Crypto variable storage 48 1986
 
MASSACHUSETTS INSTITUTE OF TECHNOLOGY (1)
4,405,829 Cryptographic communications system and method 937 1977
 
MICALI, SILVIO (1)
5,276,737 Fair cryptosystems and methods of use 124 1992
 
PUBLIC KEY PARTNERS (1)
4,995,082 Method for identifying subscribers and for generating and verifying electronic signatures in a data exchange system 193 1990
 
TTI INVENTIONS C LLC (1)
5,299,263 Two-way public key authentication and key agreement for low-cost terminals 146 1993

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
CRYPTOGRAPHY RESEARCH, INC. (8)
7,668,310 Cryptographic computation using masking to prevent differential power analysis and other attacks 0 2001
7,587,044 Differential power analysis method and apparatus 3 2001
7,506,165 Leak-resistant cryptographic payment smartcard 2 2002
7,941,666 Payment smart cards with hierarchical session key derivation providing security against differential power analysis and other attacks 0 2003
7,787,620 Prevention of side channel attacks against block cipher implementations and other cryptographic systems 3 2005
7,634,083 Differential power analysis 0 2006
7,599,488 Differential power analysis 1 2007
7,792,287 Leak-resistant cryptographic payment smartcard 0 2007
 
VMWARE, INC. (8)
7,149,310 Method and system for authorizing generation of asymmetric crypto-keys 6 2000
6,970,562 System and method for crypto-key generation and use in cryptosystem 9 2000
6,940,980 High security cryptosystem 10 2000
7,055,032 One time password entry to access multiple network sites 13 2004
8,099,607 Asymmetric crypto-graphy with rolling key security 0 2006
7,840,993 Protecting one-time-passwords against man-in-the-middle attacks 5 2006
8,213,608 Roaming utilizing an asymmetric key pair 0 2008
8,340,287 Securing multifactor split key asymmetric crypto keys 0 2010
 
CARDIAC PACEMAKERS, INC. (7)
7,155,290 Secure long-range telemetry for implantable medical device 45 2003
7,228,182 Cryptographic authentication for telemetry with an implantable medical device 23 2004
7,890,180 Secure remote access for an implantable medical device 0 2004
7,738,964 Telemetry duty cycle management system for an implantable medical device 10 2006
7,818,067 Cryptographic authentication for telemetry with an implantable medical device 1 2007
8,046,080 Telemetry duty cycle management system for an implantable medical device 1 2010
8,326,424 System and method for RF wake-up of implantable medical device 0 2011
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (6)
6,430,688 Architecture for web-based on-line-off-line digital certificate authority 56 1998
7,287,156 Methods, systems and computer program products for authentication between clients and servers using differing authentication protocols 3 2001
7,890,758 Apparatus and method for generating keys in a network computing environment 0 2003
7,299,492 Multi-level multi-user web services security system and method 0 2003
7,499,552 Cipher method and system for verifying a decryption of an encrypted user data key 1 2006
8,300,831 Redundant key server encryption environment 0 2010
 
MICROSOFT CORPORATION (5)
6,223,292 Authorization systems, methods, and computer program products 94 1997
6,173,406 Authentication systems, methods, and computer program products 54 1997
7,836,306 Establishing secure mutual trust using an insecure password 2 2005
8,028,026 Perimeter message filtering with extracted user-specific preferences 1 2006
8,332,643 Establishing secure mutual trust using an insecure password 0 2010
 
SUN MICROSYSTEMS, INC. (4)
7,016,499 Secure ephemeral decryptability 8 2001
7,409,545 Ephemeral decryption utilizing binding functions 4 2003
7,363,499 Blinded encryption and decryption 3 2003
8,225,086 Method and apparatus for remotely authenticating a command 0 2007
 
ENTRUST TECHNOLOGIES LIMITED (3)
6,370,249 Method and apparatus for public key management 68 1997
6,336,121 Method and apparatus for securing and accessing data elements within a database 22 1998
6,327,595 Apparatus for securing and accessing data elements within a database 8 2000
 
INTEL CORPORATION (3)
6,233,567 Method and apparatus for software licensing electronically distributed programs 63 1997
6,052,784 Network discovery system and method 24 1997
7,330,972 Remote management device key administration using network adapters 4 2003
 
PITNEY BOWES INC. (3)
6,847,951 Method for certifying public keys used to sign postal indicia and indicia so signed 2 1999
6,738,899 Method for publishing certification information certified by a plurality of authorities and apparatus and portable data storage media used to practice said method 3 1999
6,704,867 Method for publishing certification information representative of selectable subsets of rights and apparatus and portable data storage media used to practice said method 4 1999
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (2)
6,948,074 Method and system for distributed generation of unique random numbers for digital tokens 8 2000
7,480,939 Enhancement to authentication protocol that uses a key lease 11 2001
 
LUCENT TECHNOLOGIES INC. (2)
7,149,311 Methods and apparatus for providing networked cryptographic devices resilient to capture 7 2002
7,373,499 Methods and apparatus for delegation of cryptographic servers for capture-resilient devices 2 2002
 
NELLCOR PURITAN BENNETT INCORPORATED (2)
6,708,049 Sensor with signature of data relating to sensor 157 2000
7,522,949 Sensor with signature of data relating to sensor 0 2004
 
NOKIA CORPORATION (2)
7,472,273 Authentication in data communication 2 2001
8,122,250 Authentication in data communication 0 2008
 
RESEARCH IN MOTION LIMITED (2)
7,735,123 System and method for associating message addresses with certificates 2 2005
8,402,523 System and method for associating message addresses with certificates 0 2010
 
SYBASE, INC. (2)
7,743,069 Database system providing SQL extensions for automated encryption and decryption of column data 1 2004
7,797,342 Database system providing encrypted column support for applications 5 2007
 
WEBTV NETWORKS, INC. (2)
5,983,273 Method and apparatus for providing physical security for a user account and providing access to the user's environment and preferences 152 1997
6,199,114 Initiating a user session at an internet terminal using a smart card 49 1999
 
ARCHITECTURE TECHNOLOGY CORPORATION (1)
8,015,211 Secure peer-to-peer object storage system 1 2004
 
BATTELLE ENERGY ALLIANCE, LLC (1)
6,981,151 Digital data storage systems, computers, and data verification methods 6 2000
 
BRIGHT SUN TECHNOLOGIES (1)
7,290,278 Identity based service system 6 2003
 
BULL S.A. (1)
6,483,920 Key recovery process used for strong encryption of messages 6 1997
 
CA, INC. (1)
8,429,720 Method and apparatus for camouflaging of data, information and functional transformations 0 2008
 
CISCO TECHNOLOGY, INC. (1)
7,181,620 Method and apparatus providing secure initialization of network devices using a cryptographic key distribution approach 55 2001
 
COVIDIEN LP (1)
8,190,226 Sensor with signature of data relating to sensor 0 2008
 
CP8 TECHNOLOGIES (1)
7,260,727 Method for secure storage of sensitive data in a memory of an embedded microchip system, particularly a smart card, and embedded system implementing the method 2 2001
 
FELSHER, DAVID P., MR. (1)
7,181,017 System and method for secure three-party communications 226 2002
 
FUJITSU LIMITED (1)
6,993,654 Secure encryption processor with tamper protection 7 2000
 
GOOGLE INC. (1)
7,058,605 Document transfer systems 4 2002
 
HITACHI, LTD. (1)
6,275,941 Security management method for network system 132 1998
 
NIHON UNISYS, LTD. (1)
6,148,404 Authentication system using authentication information valid one-time 85 1998
 
SANYO ELECTRIC CO., LTD. (1)
8,363,835 Method for transmission/reception of contents usage right information in encrypted form, and device thereof 0 2005
 
SIGNIX, INC. (1)
7,237,114 Method and system for signing and authenticating electronic documents 39 2000
 
SONY DEUTSCHLAND GMBH (1)
7,949,875 Message authentication 0 2007
 
TECSEC, INCORPORATED (1)
7,089,417 Cryptographic information and flow control 4 2003
 
THOMSON LICENSING (1)
7,809,946 Secure authenticated channel 1 2008
 
TIVO INC. (1)
6,385,739 Self-test electronic assembly and test system 45 1999
 
V-ONE CORPORATION (1)
6,246,771 Session key recovery system and method 63 1997
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (1)
7,587,368 Information record infrastructure, system and method 41 2001