Patents by Inventor Vamsavardhana Reddy Chillakuru

Vamsavardhana Reddy Chillakuru 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 for authentication when certification authority public and private keys expire
    Patent number: 7930415
    Abstract: A system for enabling the use of valid authentication certificates when the public key and private keys of any of the certifying authority have expired. The enabling by the system includes obtaining a server certifying authority chain (SCAC) certificate by the server from the certifying authority, presenting the original valid authentication certificate along with the said server certifying authority chain certificate by the server to the browser during the SSL handshake, accepting the transaction by the browser after verification of the original authentication certificate using the expired public key of the certifying authority, and verifying the said SCAC certificate using the new public key of the said certifying authority.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: April 19, 2011
    Assignee: International Business Machines Corporation
    Inventors: Deepak Gupta, Vamsavardhana Reddy Chillakuru
  • METHOD AND SYSTEM FOR AUTHENTICATION WHEN CERTIFICATION AUTHORITY PUBLIC AND PRIVATE KEYS EXPIRE
    Publication number: 20080209209
    Abstract: A system for enabling the use of valid authentication certificates when the public key and private keys of any of the certifying authority have expired. The enabling by the system includes obtaining a server certifying authority chain (SCAC) certificate by the server from the certifying authority, presenting the original valid authentication certificate along with the said server certifying authority chain certificate by the server to the browser during the SSL handshake, accepting the transaction by the browser after verification of the original authentication certificate using the expired public key of the certifying authority, and verifying the said SCAC certificate using the new public key of the said certifying authority.
    Type: Application
    Filed: May 1, 2008
    Publication date: August 28, 2008
    Inventors: Deepak Gupta, Vamsavardhana Reddy Chillakuru
  • Method and system for authentication when certification authority public and private keys expire
    Patent number: 7412524
    Abstract: This invention relates to a method for enabling the use of valid authentication certificates when the public key and private keys of any of the certifying authority have expired, comprising obtaining a server certifying authority chain (SCAC) certificate by the server from the said certifying authority, presenting the original valid authentication certificate along with the said server certifying authority chain certificate by the server to the browser during the SSL handshake, accepting the transaction by the browser after verification of the original authentication certificate using the expired public key of the certifying authority, and verifying the said SCAC certificate using the new public key of the said certifying authority. This invention further includes a system conducting secure transactions including a certifying authority for authenticating such transactions.
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: August 12, 2008
    Assignee: International Business Machines Corporation
    Inventors: Deepak Gupta, Vamsavardhana Reddy Chillakuru