Patents by Inventor Tom Qi Xiong Ruan

Tom Qi Xiong Ruan 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 and system of securely escrowing private keys in a public key infrastructure
    Patent number: 6931133
    Abstract: A method of restricting access to private keys in a public key infrastructure provides for storage of an encrypted private key at a primary site. A masked session key is stored at a secondary site, where the masked session key enables recovery of the private key. By using distributed storage architecture for recovery data, simplification can be achieved without sacrificing security.
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: August 16, 2005
    Assignee: Verisign, Inc.
    Inventors: Richard F. Andrews, Zhiyong Huang, Tom Qi Xiong Ruan
  • Method and system of securely escrowing private keys in a public key infrastructure
    Publication number: 20040042620
    Abstract: A method of restricting access to private keys in a public key infrastructure provides for storage of an encrypted private key at a primary site. A masked session key is stored at a secondary site, where the masked session key enables recovery of the private key. By using distributed storage architecture for recovery data, simplification can be achieved without sacrificing security.
    Type: Application
    Filed: September 3, 2002
    Publication date: March 4, 2004
    Inventors: Richard F. Andrews, Zhiyong Huang, Tom Qi Xiong Ruan