Patents by Inventor Xiufen Liu

Xiufen Liu 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).

  • Method for offloading encryption and decryption of a message received at a message server to remote end devices
    Patent number: 7827398
    Abstract: A method for offloading encryption and decryption of a message received at a message server to one or more end devices that are remote from the message server. An encrypting end device remote from the message server encrypts a message using cryptographic context and transmits the cryptographic context and encrypted message to the message server for storage at the message server. The message server stores the encrypted message as received without decrypting the message. The message server sends the stored cryptographic context and the encrypted message to a decrypting end device in response to the decrypting end device sending a request for the message server to transmit the encrypted message to the decrypting end device. The decrypting end device uses the cryptographic context to decrypt the encrypted message and then presents the decrypted message to a user of the decrypting end device.
    Type: Grant
    Filed: October 27, 2005
    Date of Patent: November 2, 2010
    Assignee: Hewlett-Packard Company
    Inventors: Xiufen Liu, John Poplett, Arun Singh
  • Method for offloading encryption and decryption of a message received at a message server to remote end devices
    Publication number: 20070101133
    Abstract: A method for offloading encryption and decryption of a message received at a message server to one or more end devices that are remote from the message server. An encrypting end device remote from the message server encrypts a message using cryptographic context and transmits the cryptographic context and encrypted message to the message server for storage at the message server. The message server stores the encrypted message as received without decrypting the message. The message server sends the stored cryptographic context and the encrypted message to a decrypting end device in response to the decrypting end device sending a request for the message server to transmit the encrypted message to the decrypting end device. The decrypting end device uses the cryptographic context to decrypt the encrypted message and then presents the decrypted message to a user of the decrypting end device.
    Type: Application
    Filed: October 27, 2005
    Publication date: May 3, 2007
    Applicant: 3COM Corporation
    Inventors: Xiufen Liu, John Poplett, Arun Singh