US Patent No: 6,385,723

Number of patents in Portfolio can not be more than 2000

Key transformation unit for an IC card

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Abstract

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A multi-application IC card system and method is disclosed providing a secure data transmission technique. The method is used, for example, to load an application from an application provider, which could be remote, to an IC card. At least a portion of the application is encrypted using a transfer key. The transfer key is then encrypted using the public key of a public/secret key pair of the intended IC card to form a key transformation unit. The encrypted application and key transformation unit are then sent to the IC card and the IC card decrypts the key transformation unit using its secret key. The transfer key is then recovered and used to decrypt the encrypted application. The application can then by stored on the IC card and accessed by the card user.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
BAMBOO HOLDINGS, A CAYMAN ISLANDS EXEMPTED LIMITED COMPANYLONDON8
MULTOS LIMITEDLONDON20
STEPNEXUS HOLDINGS, A CAYMAN ISLAND EXEMPTED LIMITED COMPANYLONDON8

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Richards, Timothy Philip Herts, GB 33 515

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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MOTOROLA MOBILITY LLC (2)
6,009,173 Encryption and decryption method and apparatus 107 1997
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5,131,038 Portable authentification system 236 1990
 
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SMART CARD, LLC (2)
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Other [Check patent profile for assignment information] (3)
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Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
VISA U.S.A. INC. (31)
8,010,405 Multi-application smart card device software solution for smart cardholder reward selection and redemption 2 2003
8,626,577 Network centric loyalty system 0 2003
6,920,611 Method and system for implementing a loyalty merchant component 64 2003
8,554,610 Method and system for providing reward status 0 2003
7,104,446 Method, system and portable consumer device using wildcard values 28 2003
8,015,060 Method and system for managing limited use coupon and coupon prioritization 0 2003
7,121,456 Method and system for managing token image replacement 21 2003
7,051,923 Method and system for providing interactive cardholder rewards image replacement 34 2003
8,407,083 Method and system for managing reward reversal after posting 2 2003
8,005,763 Method and system for providing a distributed adaptive rules based dynamic pricing system 0 2003
7,827,077 Method and apparatus for management of electronic receipts on portable devices 5 2003
7,653,602 Centralized electronic commerce card transactions 3 2003
7,464,870 Method and system for providing interactive cardholder rewards image replacement 1 2006
7,350,702 Method, system and portable consumer device using wildcard values 10 2006
7,374,078 Method and system for managing token image replacement 3 2006
7,367,501 Method, system and portable consumer device using wildcard values 9 2006
7,857,215 Method and system including phone with rewards image 0 2007
7,857,216 Method and system for providing interactive cardholder rewards image replacement 0 2007
7,654,451 Method, system and portable consumer device using wildcard values 5 2007
7,611,054 Mobile phone including wildcard data string 5 2007
7,624,917 Method and system for managing token image replacement 1 2007
7,591,412 Method and system for managing token image replacement 1 2007
8,386,343 Method and user device for management of electronic receipts 0 2009
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8,346,634 Method and apparatus for management of electronic receipts on portable devices 1 2010
8,141,777 Method and system using wildcard values 0 2011
8,244,648 Method and system for providing a distributed adaptive rules based dynamic pricing system 0 2011
8,682,716 Method and system for managing limited use coupon and coupon prioritization 0 2012
 
SONY CORPORATION (4)
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INTERNATIONAL BUSINESS MACHINES CORPORATION (2)
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MULTOS LIMITED (2)
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PRISM TECHNOLOGIES LLC (2)
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NCR CORPORATION (1)
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8,060,873 Method and system for remote programming of a program-controlled device using a legitimization code 0 2004
 
STMICROELECTRONICS INTERNATIONAL N.V. (1)
8,381,307 Method for protecting a converted applet (CAP) file including encrypting the CAP file 0 2009
 
TELECOM ITALIA S.P.A. (1)
8,265,282 Method of and system for secure management of data stored on electronic tags 1 2004
 
Other [Check patent profile for assignment information] (1)
8,239,261 Method and system for managing limited use coupon and coupon prioritization 0 2008

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