Patents by Inventor Sunitha Samuel

Sunitha Samuel 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).

  • Separating authorization identity from policy enforcement identity
    Patent number: 8448228
    Abstract: The present invention extends to methods, systems, and computer program products for separating authorization identity from policy enforcement identity. Embodiments of the invention extend the consumption phase for protected information. Two identities, an authorization identity and a policy enforcement identity, are used for acquiring, issuing and enforcing usage license instead of one identity certificate. The authorization identity is used to evaluate against usage policy. The authorization identity is similar to identification information in an identity certificate. The policy enforcement identity is used to ensure the confidentiality of granted permissions and content key. The policy enforcement identity enforces a usage license on an authorization principal's (e.g., recipient's) machine. The policy enforcement identity's enforcement of a usage license is similar use of a cryptographic key in an identity certificate.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: May 21, 2013
    Assignee: Microsoft Corporation
    Inventors: Yuhui Zhong, Gregory Kostal, Tejas D. Patel, Scott C. Cottrille, Vladimir Yarmolenko, Pankaj Mohan Kamat, Sunitha Samuel, Frank D. Byrum, Mayank Mehta, Chandresh Kumar Jain, Edward Banti
  • SEPARATING AUTHORIZATION IDENTITY FROM POLICY ENFORCEMENT IDENTITY
    Publication number: 20120079268
    Abstract: The present invention extends to methods, systems, and computer program products for separating authorization identity from policy enforcement identity. Embodiments of the invention extend the consumption phase for protected information. Two identities, an authorization identity and a policy enforcement identity, are used for acquiring, issuing and enforcing usage license instead of one identity certificate. The authorization identity is used to evaluate against usage policy. The authorization identity is similar to identification information in an identity certificate. The policy enforcement identity is used to ensure the confidentiality of granted permissions and content key. The policy enforcement identity enforces a usage license on an authorization principal's (e.g., recipient's) machine. The policy enforcement identity's enforcement of a usage license is similar use of a cryptographic key in an identity certificate.
    Type: Application
    Filed: September 29, 2010
    Publication date: March 29, 2012
    Applicant: Microsoft Corporation
    Inventors: Yuhui Zhong, Gregory Kostal, Tejas D. Patel, Scott C. Cottrille, Vladimir Yarmolenko, Pankaj Mohan Kamat, Sunitha Samuel, Frank D. Byrum, Mayank Mehta, Chandresh Kumar Jain, Edward Banti