| Patent | Date |
|---|
Determining a session key using session data
Grant 11,418,364 - Tang August 16, 2 | 2022-08-16 |
Downloading of data to secure devices
Grant 11,115,201 - Tang , et al. September 7, 2 | 2021-09-07 |
Device Pairing and Authentication
App 20210160088 - Tang; Lawrence W. ; et al. | 2021-05-27 |
Device pairing and authentication
Grant 10,944,579 - Tang , et al. March 9, 2 | 2021-03-09 |
Determining a Session Key Using Session Data
App 20180357432 - Tang; Lawrence W. | 2018-12-13 |
Encryption operation with real data rounds, dummy data rounds, and delay periods
Grant 8,958,550 - Tang , et al. February 17, 2 | 2015-02-17 |
Downloading Of Data To Secure Devices
App 20140376718 - Tang; Lawrence W. ; et al. | 2014-12-25 |
Downloading of data to secure devices
Grant 8,792,637 - Tang , et al. July 29, 2 | 2014-07-29 |
Downloading of Data to Secure Devices
App 20130129086 - Tang; Lawrence W. ; et al. | 2013-05-23 |
Preservation Of Encryption
App 20130064362 - Tang; Lawrence W. ; et al. | 2013-03-14 |
Content delivery with segmented key list
Grant 8,385,555 - Tang , et al. February 26, 2 | 2013-02-26 |
Method and apparatus for providing a border guard between security domains
Grant 8,156,560 - Okimoto , et al. April 10, 2 | 2012-04-10 |
Method and apparatus for providing a secure system time
Grant 7,929,483 - Kimball , et al. April 19, 2 | 2011-04-19 |
Method to leverage a secure device to grant trust and identity to a second device
Grant 7,764,793 - Qiu , et al. July 27, 2 | 2010-07-27 |
Content Delivery Network Having Downloadable Conditional Access System with Personalization Servers for Personalizing Client Devices
App 20100142712 - Tang; Lawrence W. ; et al. | 2010-06-10 |
Smart card mating protocol
Grant 7,305,555 - Okimoto , et al. December 4, 2 | 2007-12-04 |
System for denying access to content generated by a compromised off line encryption device and for conveying cryptographic keys from multiple conditional access systems
Grant 7,257,227 - Chen , et al. August 14, 2 | 2007-08-14 |
Method to leverage a secure device to grant trust and identity to a second device
App 20070091345 - Qiu; Xin ; et al. | 2007-04-26 |
System for denying access to content generated by a compromised off line encryption device and for conveying cryptographic keys from multiple conditional access systems
App 20060159264 - Chen; Annie On-yee ; et al. | 2006-07-20 |
System for denying access to content generated by a compromised off line encryption device and for conveying cryptographic keys from multiple conditional access systems
Grant 7,076,661 - Chen , et al. July 11, 2 | 2006-07-11 |
Method and apparatus for providing a secure system time
App 20060146885 - Kimball; Bridget D. ; et al. | 2006-07-06 |
Method and apparatus for providing a border guard between security domains
App 20060150252 - Okimoto; John I. ; et al. | 2006-07-06 |
System for securing encryption renewal system and for registration and remote activation of encryption device
Grant 6,978,022 - Okimoto , et al. December 20, 2 | 2005-12-20 |
System for denying access to content generated by a compromised off line encryption device and for conveying cryptographic keys from multiple conditional access systems
App 20050157877 - Chen, Annie On-yee ; et al. | 2005-07-21 |
Method and apparatus for pre-encrypting VOD material with a changing cryptographic key
App 20040083177 - Chen, Annie On-Yee ; et al. | 2004-04-29 |
Variable security code download for an embedded processor
Grant 6,711,684 - Moroney , et al. March 23, 2 | 2004-03-23 |
Smart card mating protocol
App 20030188164 - Okimoto, John I. ; et al. | 2003-10-02 |
System for securely delivering encrypted content on demand with access contrl
App 20020083438 - So, Nicol Chung Pang ; et al. | 2002-06-27 |
System for denying access to content generated by a compromised off line encryption device and for conveying cryptographic keys from multiple conditional access systems
App 20020076050 - Chen, Annie On-Yee ; et al. | 2002-06-20 |
System for securing encryption renewal system and for registration and remote activation of encryption device
App 20020051539 - Okimoto, John I. ; et al. | 2002-05-02 |
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