×

Media/data card

  • US 20090276434A1
  • Filed: 07/09/2009
  • Published: 11/05/2009
  • Est. Priority Date: 10/12/2005
  • Status: Active Grant
First Claim
Patent Images

1. A method for providing secure access to media files stored on a computer readable digital medium, comprising the steps of:

  • reading a security data structure stored on the computer readable digital medium;

    retrieving a user identifier associated with a user requesting access to the media files;

    comparing information read from the security data structure with the user identifier;

    determining an access level for the user based on the comparison;

    determining whether an access requested by the user is authorized based upon the access level determined for the user;

    forming a digital signature based upon the user identifier and identification data stored on the computer readable digital medium using a cryptographically secure hashing function; and

    storing the digital signature in the security data structure stored on the computer readable digital medium.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×