Patents by Inventor Christina Fu

Christina Fu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8364952
    Abstract: Methods, systems and computer readable mediums are provided for recovering subject keys and/or certificates for a token. A unique identifier associated with the token is obtained. The token is associated with subject keys and with a first status of statuses, the statuses including a lost status state and an other status state. In response to the token being in the lost status state, a key recovery plan is determined to recover at least one of the subject keys and the certificates associated with the token.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: January 29, 2013
    Assignee: Red Hat, Inc.
    Inventors: Shuk Yee Ho, Christina Fu, Chandrasekar Kannan, Nang Kon Kwan
  • Patent number: 8200811
    Abstract: A Serial Number Management System (SNMS) automatically manages the allocation of unique serial numbers to certificate authority servers in a replicated server environment. The SNMS automatically detects that a Certificate Authority (CA) server has a need for additional unused serial numbers. The SNMS identifies a provider CA server that has unused serial numbers. The SNMS obtains a portion of the unused serial numbers from the provider CA server.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: June 12, 2012
    Assignee: Red Hat, Inc.
    Inventors: Ade Lee, Christina Fu, Andrew Wnuk
  • Patent number: 8098829
    Abstract: An embodiment pertains generally to a method of delivering keys in a server. The method includes generating a subject key pair, where the subject key pair includes a subject public key and a subject private key. The method also includes retrieving a storage key and encrypting the subject private key with the storage key as a wrapped storage private key. The method further includes storing the wrapped storage private key.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: January 17, 2012
    Assignee: Red Hat, Inc.
    Inventors: Christina Fu, Steven William Parkinson, Nang Kon Kwan
  • Publication number: 20110293098
    Abstract: A method and system for key recovery for a private key of a digital certificate for a client.
    Type: Application
    Filed: June 1, 2010
    Publication date: December 1, 2011
    Inventors: Christina Fu, Ade Lee
  • Publication number: 20110296171
    Abstract: A method and system for server-side key generation for non-token clients is described.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 1, 2011
    Inventors: Christina Fu, Ade Lee
  • Publication number: 20110296172
    Abstract: A method and system for server-side key generation for non-token clients is described.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 1, 2011
    Inventors: Christina Fu, Andrew Wnuk
  • Publication number: 20110213961
    Abstract: A method and system for dynamic user interface generation based on constraints of a certificate profile is described.
    Type: Application
    Filed: February 26, 2010
    Publication date: September 1, 2011
    Inventors: Andrew Wnuk, Christina Fu
  • Publication number: 20110213966
    Abstract: A method and system for automatically generating a certificate operation request is described.
    Type: Application
    Filed: February 26, 2010
    Publication date: September 1, 2011
    Inventors: Christina Fu, Andrew Wnuk
  • Publication number: 20110213965
    Abstract: A method and system for identity management certificate operations is described.
    Type: Application
    Filed: February 26, 2010
    Publication date: September 1, 2011
    Inventors: Christina Fu, Andrew Wnuk
  • Publication number: 20110167256
    Abstract: A method and system for managing role-based access control of token data using token profiles is described.
    Type: Application
    Filed: January 5, 2010
    Publication date: July 7, 2011
    Inventors: Ade Lee, Christina Fu
  • Publication number: 20110167483
    Abstract: A method and system for managing role-based access control of token data using token profiles having predefined roles is described.
    Type: Application
    Filed: January 5, 2010
    Publication date: July 7, 2011
    Inventors: Ade Lee, Christina Fu
  • Publication number: 20110126001
    Abstract: A method and system for automatic certificate renewal is described.
    Type: Application
    Filed: November 24, 2009
    Publication date: May 26, 2011
    Inventors: Christina Fu, Andrew Wnuk
  • Publication number: 20110126002
    Abstract: A method and system for renewing certificates stored on tokens is described.
    Type: Application
    Filed: November 24, 2009
    Publication date: May 26, 2011
    Inventors: Christina Fu, John Garraye Magne
  • Publication number: 20110113240
    Abstract: A method and system for renewing digital certificates using an enrollment profile framework is described.
    Type: Application
    Filed: November 10, 2009
    Publication date: May 12, 2011
    Inventors: Christina Fu, Ade Lee
  • Publication number: 20110113239
    Abstract: A method and system for renewal of expired certificates is described. In one embodiment, a method, implemented by a computing system programmed to perform operations, includes receiving, at a certificate manager of a computing system from a requester, a certificate renewal request for an original digital certificate that has already expired, and renewing the expired certificate as a renewed certificate by the certificate manager when the certificate renewal request is approved. The renewed certificate comprises the same key pair as the original certificate, but includes a new expiration date, and wherein the renewed certificate is functionally identical to the original certificate.
    Type: Application
    Filed: November 10, 2009
    Publication date: May 12, 2011
    Inventors: Christina Fu, Ade Lee
  • Publication number: 20110078304
    Abstract: A Serial Number Management System (SNMS) automatically manages the allocation of unique serial numbers to certificate authority servers in a replicated server environment. The SNMS automatically detects that a Certificate Authority (CA) server has a need for additional unused serial numbers. The SNMS identifies a provider CA server that has unused serial numbers. The SNMS obtains a portion of the unused serial numbers from the provider CA server.
    Type: Application
    Filed: September 30, 2009
    Publication date: March 31, 2011
    Inventors: ADE LEE, CHRISTINA FU, ANDREW WNUK
  • Publication number: 20110078772
    Abstract: A Security Domain Access System (SDAS) provides highly available security domain data. The SDAS receives a request pertaining to a security domain. The request includes credentials for accessing a security domain manager server. The SDAS selects one of a plurality of security domain manager servers to process the request based on the credentials and the availability of each of the plurality of security domain manager servers. The SDAS forwards the request to the selected security domain manager server.
    Type: Application
    Filed: September 30, 2009
    Publication date: March 31, 2011
    Inventors: Ade Lee, Christina Fu, Andrew Wnuk
  • Publication number: 20110078198
    Abstract: A Serial Number Management System (SNMS) automatically manages the allocation of unique serial numbers to certificate authority servers in a replicated server environment. The SNMS automatically detects that a Certificate Authority (CA) server has a need for a new set of unused serial numbers. The SNMS obtains a global serial number that is available to be used by any of the CA servers in a replication domain. The SNMS determines the new set of the unused serial numbers using the global serial number and updates the global serial number.
    Type: Application
    Filed: September 30, 2009
    Publication date: March 31, 2011
    Inventors: Ade Lee, Christina Fu, Andrew Wnuk
  • Patent number: 7822209
    Abstract: Methods, systems and computer readable mediums are provided for recovering keys. A key transport session key is generated, and a key encryption key is derived based on a server master key and an identification associated with a token. The key transport session key is encrypted with the key encryption key as a first wrapped key transport session key. An encrypted storage session key and an encrypted private key are retrieved from an archive. The encrypted storage session key is decrypted with a server storage key as a storage session key. The encrypted private key is decrypted with the storage session key. The decrypted private key is encrypted with the key transport session key as a wrapped private key. The wrapped private key and the first wrapped key transport session key are forwarded.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: October 26, 2010
    Assignee: Red Hat, Inc.
    Inventors: Christina Fu, Nang Kon Kwan, Steven William Parkinson, Robert Relyea
  • Publication number: 20080022086
    Abstract: Methods, systems and computer readable mediums are provided for recovering subject keys and/or certificates for a token. A unique identifier associated with the token is obtained. The token is associated with subject keys and with a first status of statuses, the statuses including a lost status state and an other status state. In response to the token being in the lost status state, a key recovery plan is determined to recover at least one of the subject keys and the certificates associated with the token.
    Type: Application
    Filed: June 6, 2006
    Publication date: January 24, 2008
    Inventors: Shuk Yee Ho, Christina Fu, Chandrasekar Kannan, Nang Kon Kwan