Patents by Inventor Ognian Zdravkov Topalov

Ognian Zdravkov Topalov 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).

  • Secure method for roaming keys and certificates
    Patent number: 7320073
    Abstract: A simple scheme is provided for server storage of private keys and certificates in a secure manner, thus solving the difficult problems of roaming certificates. A user can access his private keys and certificates from anywhere in the network. Despite that the server stores the user's private keys, the server must not be able to impersonate the user on a network or sign messages for the user. A scheme for truly secure transactions is also provided.
    Type: Grant
    Filed: April 7, 2003
    Date of Patent: January 15, 2008
    Assignee: AOL LLC
    Inventors: Vasileios Zissimopoulos, Ognian Zdravkov Topalov
  • Secure method for roaming keys and certificates
    Publication number: 20040199774
    Abstract: A simple scheme is provided for server storage of private keys and certificates in a secure manner, thus solving the difficult problems of roaming certificates. A user can access his private keys and certificates from anywhere in the network. Despite that the server stores the user's private keys, the server must not be able to impersonate the user on a network or sign messages for the user. A scheme for truly secure transactions is also provided.
    Type: Application
    Filed: April 7, 2003
    Publication date: October 7, 2004
    Inventors: Vasileios Zissimopoulos, Ognian Zdravkov Topalov